INTERIOR AND SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

Transcription

1 52A-1 INTERIOR AN SUPPLEMENTAL RESTRAINT SYSTEM (SRS) CONTENTS INTERIOR... 52A SUPPLEMENTAL RESTRAINT SYSTEM (SRS)... 52B

2 52A-2 INTERIOR CONTENTS SPECIAL TOOL... 3 INSTRUMENT PANEL*... 3 FRONT FLOOR CONSOLE REAR FLOOR CONSOLE TRIMS SEAT Front Seat Rear Seat SEAT BELT Front Seat Belt Rear Seat Belt HEALINI WARNIS REGARI SERVICI OF SUPPLEMENTAL RESTRAINT SYSTEM (SRS) EQUIPPE VEHICLES WARNI! (1) Improper service or maintenance of any component of the SRS, or any SRS-related component, can lead to personal injury ordeath toservicepersonnel(frominadvertentfiring ofthe airbag) orto the driver and passenger (fromrendering the SRS inoperative). (2) Service or maintenance of any SRS component or SRS-related component must be performed only at an authorized MITSUBISHI dealer. (3) MITSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP 52B - Supplemental Restraint System (SRS) before beginning any service or maintenance of any component of the SRS or any SRS-related component. NOTE The SRS includes the following components: SRS-ECU, SRS warning lamp, air bag module, clock spring and interconnecting wiring. Other SRS-related components (that may have to be removed/installed in connection with SRS service or maintenance) are indicated in the table of contents by an asterisk (*).

3 INTERIOR - Special Tool/Instrument Panel 52A-3 SPECIAL TOOL Tool Number Name Application MB Ornament remover Removal of switches and trims INSTRUMENT PANEL REMOVAL AN INSTALLATION The following bolts and screws are used for installing the instrument panel. Bolts and screws are indicated as marks shown in the illustration in the sections of Removal and Installation and isassembly and Reassembly. Name Mark imensions mm (screw diameter x screw length) Color Shape Tapping screw a 5 16 Black b c Bolt with washer d e

4 52A-4 INTERIOR - Instrument Panel <L.H. RIVE VEHICLE> : SRS 1. Refer to GROUP 52B-SRS Service Precautions and Air bag Module and Clock Spring before removing the passenger side air bag module. 2. o not subject the SRS-ECU to any shocks when removing or installing the instrument panel. Pre-removal and Post-installation Operation Removal and Installation of Front Pillar Trim (Refer to P.52A-15.) Food Opener Lever (Refer to GROUP42.) 2 b a c c 4 d d d d d d d d b 6 a 11 a d b b 17 Removal steps 1. Column cover 2. Meter bezel 3. Combination meter 4. Instrument panel ornament 5. Under cover 6. Box <Vehicle with box> 7. Switch panel <Vehicle with switch panel> 8. Side box 9. Lower frame 10. Heater control knob 11. Heater control assembly mounting screw 12. Center panel 13. Heater control panel assembly 14. Radio plug AA" 15. Center air outlet panel 16. Center lower box <RS- > 17. Center lower case <RS- > 18. Center lower box <RS> 19. Stopper 20. Glove box 21. Harness cover 22. Instrument panel side cover 23. SRS front passenger s air bag module mounting bolt Steering column shaft mounting bolt (Refer to GROUP37A Steering Wheel and Shaft.) 24. Instrument panel assembly 25. SRS front passenger s air bag module

5 INTERIOR - Instrument Panel 52A-5 CLIP AN CLAW POSITIONS C C B B A A E E G H G NOTE F F H I I I I (1) : Clip positions (2) : Claw positions Section A - A Section B - B Section C - C Clip Column cover Claw Instrument panel Instrument panel Claw Section - Section E - E Section F - F Claw Instrument panel Clip Clip Claw Instrument panel Instrument panel Section G - G Section H - H Section I - I Clip Instrument panel Instrument panel Clip Instrument panel Claw

6 52A-6 INTERIOR - Instrument Panel REMOVAL SERVICE POINT AA" SRS FRONT PASSEER S AIR BAG MOULE REMOVAL Insert the flat tipped screw driver into the position shown in the illustration and pull up the screw driver to disengage the claws for removal of the front passenger s air bag module. 1. o not damage the claws of the hinge when removing the front passenger s air bag module. 2. Store the removed front passenger s air bag module facing the deployed side upward in a clean and dry place. ISASSEMBLY AN REASSEMBLY c 4 3 c c 2 c c e 7 c 6 c c c c e c c c 1 c 10 c c c c c c c 14 isassembly steps 1. Instrument panel upper support 2. Side defroster duct 3. Center defroster duct 4. istribution duct 5. river side upper bracket 6. Center upper reinforcement 7. Instrument panel center reinforcement 8. Bridge reinforcement 9. Center lower reinforcement 10. Glove box striker 11. Instrument panel pad 12. Side demister 13. efroster garnish 14. Side air outlet assembly 15. Instrument panel

7 INTERIOR - Instrument Panel 52A-7 <R.H. RIVE VEHICLE> : SRS 1. Refer to GROUP 52B-SRS Service Precautions and Air bag Module and Clock Spring before removing the passenger side air bag module. 2. o not subject the SRS-ECU to any shocks when removing or installing the instrument panel. Pre-removal and Post-installation Operation Removal and Installation of Front Pillar Trim (Refer to P.52A-15.) Food Opener Lever (Refer to GROUP42.) 23 d 24 d 26 d d 25 d 3 d d d a 4 23 c c b d a a 5 b b a b 17 Removal steps 1. Column cover 2. Meter bezel 3. Combination meter 4. Instrument panel ornament 5. Under cover 6. Box <Vehicle with box> 7. Switch panel <Vehicle with switch panel> 8. Side box 9. Lower frame 10. Heater control knob 11. Heater control assembly mounting screw 12. Center panel 13. Heater control panel assembly 14. Radio and tape player AA" 15. Plug <Vehicle without radio and tape player> 16. Center air outlet panel 17. Center lower box A <RS- > 18. Center lower case A <RS- > 19. Center lower box B <RS> 20. Stopper 21. Glove box 22. Harness cover 23. Instrument panel side cover 24. SRS front passenger s air bag module mounting bolt Steering column shaft mounting bolt (Refer to GROUP37A Steering Wheel and Shaft.) 25. Instrument panel assembly 26. SRS front passenger s air bag module

8 52A-8 INTERIOR - Instrument Panel CLIP AN CLAW POSITIONS C C B B A A E E G H G H F F NOTE I I I I (1) : Clip location (2) : Claw location Section A - A Section B - B Clip Section C - C Instrument panel Claw Instrument panel Claw Column cover Section - Section E - E Section F - F Claw Clip Instrument panel Clip Claw Instrument panel Instrument panel Section G - G Clip Claw Section H - H Clip Section I - I Instrument panel Instrument panel Instrument panel

9 INTERIOR - Instrument Panel 52A-9 REMOVAL SERVICE POINT AA" SRS FRONT PASSEER S AIR BAG MOULE REMOVAL Insert the flat tipped screw driver into the position shown in the illustration and pull up the screw driver to disengage the claws for removal of the front passenger s air bag module. 1. o not damage the claws of the hinge when removing the front passenger s air bag module. 2. Store the removed front passenger s air bag module facing the deployed side upward in a clean and dry place. ISASSEMBLY AN REASSEMBLY c 13 c 2 c c c c 3 2 c 4 c c c 10 c c e c c c 6 c 7 7 c c 8 9 c e c c 1 15 c 11 isassembly steps 1. Instrument panel upper support 2. Side defroster duct 3. Center defroster duct 4. istribution duct 5. river side upper bracket 6. Center upper reinforcement 7. Instrument panel center reinforcement 8. Bridge reinforcement 9. Center lower reinforcement 10. Glove box striker 11. Glove box cover 12. Instrument panel pad 13. Side demister 14. efroster garnish 15. Side air outlet assembly 16. Instrument panel

10 52A-10 INTERIOR - Front Floor Console FRONT FLOOR CONSOLE REMOVAL AN INSTALLATION Pre-removal and Post-installation Operation Removal and Installation of Rear Foor Console (Refer to P.52A-12.) <L.H. RIVE VEHICLE> Removal steps 1. Console side cover 2. Shift lever knob 3. Front floor console assembly 4. Front floor console panel 5. Cigarette lighter 6. Ashtray 7. Shift lever cover 8. Shift lever panel garnish 9. Front floor console 10. Harness 11. Console side cover bracket 12. Front floor console bracket

11 REMOVAL AN INSTALLATION Pre-removal and Post-installation Operation Removal and Installation of Rear Floor Console (Refer to P.52A-12.) INTERIOR - Front Floor Console 52A-11 <R.H. RIVE VEHICLE> Removal steps 1. Console side cover 2. Shift lever knob 3. Front floor console assembly 4. Front floor console panel 5. Cigarette lighter 6. Ashtray 7. Shift lever cover 8. Shift lever panel garnish 9. Front floor console 10. Harness 11. Console side cover bracket 12. Front floor console bracket

12 52A-12 INTERIOR - Rear Floor Console REAR FLOOR CONSOLE REMOVAL AN INSTALLATION <Type A> 1 2 <Type B> Removal steps 1. Console box mat 2. Rear console assembly Rear seat cushion assembly (Refer to P.52A-22.) Front scuff plate (Refer to P.52A-15.) Rear scuff plate (Refer to P.52A-15.) Center pillar trim, lower (Refer to P.52A-15.) Floor carpet 3. Rear console bracket

13 ISASSEMBLY AN REASSEMBLY INTERIOR - Rear Floor Console 52A-13 <Type B> <Type A> AA" isassembly steps 1. Ashtray 2. Cup holder 3. Hole lock 4. Rear floor console 5. Console lid assembly 6. Console lid 7. Lower lid striker 8. Hinge bracket 9. Box 10. Rear floor console

14 52A-14 INTERIOR - Rear Floor Console Console lid assembly ISASSEMBLY SERVICE POINT AA" REMOVAL OF CONSOLE LI ASSEMBLY Insert the special tool into the hinges of the console lid assembly and the rear floor console through the ashtray mounting hole to pry for removal. Rear floor console View A Ashtray mounting hole View A MB Hinges

15 INTERIOR - Trims 52A-15 TRIMS REMOVAL AN INSTALLATION ± 10 N m NOTE Refer to GROUP42 for more information regarding door trim. AA" Removal steps 1. Front scuff plate 2. Cowl side trim 3. Rear scuff plate 4. Front door opening trim 5. Rear door opening trim 6. Front pillar trim 7. Center pillar trim, lower 8. Front seat belt connection 9. Center pillar trim, upper 10. Rear pillar trim 11. Rear shelf trim 12. Speaker garnish <RS- > 13. Retractor trim 14. Partition board 15. Rear end trim 16. Trunk side trim <RS- >

16 52A-16 INTERIOR - Trims CLIP POSITION B B B B B B E E H H I I A A F F G G C C C C NOTE : Clip position : Claw position Section A - A Front pillar trim Section B - B Clip Section C - C Front scuff plate, Rear scuff plate Clip Headlining Front pillar trim, Center pillar trim, upper, Rear pillar trim Clip Section - Rear pillar trim Speaker garnish Section E - E Section F - F Rear shelf trim Clip Clip Clip Section G - G Rear end trim Section H - H Retractor trim Section I - I Retractor trim Clip Craw Craw

17 INTERIOR - Trims/Headlining 52A-17 Front pillar trim Section A A Front pillar trim REMOVAL SERVICE POINT AA" FRONT PILLAR TRIM REMOVAL Release the clip to pull towards the direction shown in the illustration and remove the front pillar trim. A A Instrument panel HEALINI REMOVAL AN INSTALLATION Pre-removal and Post-installation Operation Removal and Installation of Front Pillar Trim, Center Pillar Trim, upper, Rear Pillar Trim (Refer to P.52A-15.) AA" Removal steps 1. Assist grip 2. Room lamp assembly 3. Front room lamp 4. Sunvisor holder AB" 5. Sunvisor assembly Front floor console assembly (Refer to P.52A-10.) 6. Headlining

18 52A-18 MB Sunvisor holder INTERIOR - Headlining REMOVAL SERVICE POINTS AA" SUNVISOR HOLER REMOVAL Insert the special tool into sides claws of the sunvisor holder through the both sides of the sunvisor holder to remove the hinges. MB AB" HEALINI REMOVAL Bend the headlining to remove from the front passenger s door.

19 INTERIOR - Seat 52A-19 SEAT FRONT SEAT REMOVAL AN INSTALLATION 1 44 ± 10 NSm ± 5NSm 44 ± 10 NSm 3 30 ± 5NSm 2 1. Headrest Front seat assembly removal steps 2. Front seat anchor cover "AA 3. Front seat assembly INSTALLATION SERVICE POINT "AA INSTALLATION OF FRONT SEAT ASSEMBLY (1) Temporarily tighten the nuts and bolts in all mounting locations shown in the illustration with no load applied to the front seat cushion and check the operation of the seat slide. (2) Tighten the nuts and bolts in all mounting locations to the specified torque.

20 52A-20 INTERIOR - Seat ISASSEMBLY AN REASSEMBLY HIGHT AJUSTER SEAT ± 10 NSm A A ± 2NSm Section A - A Claw ± 2NSm 8, 9 20 A ± 10 NSm A 9 isassembly steps 1. Reclining knob 2. Pin 3. Height adjuster knob 4. Front seat cushion assembly 5. Front seat cushion cover 6. Front seat cushion pad 7. Front seat cushion frame 8. Reclining cover 9. Shield cover 10. Front seatback assembly AA" 11. Headrest guide 12. Front seatback cover 13. Front seatback pad 14. Front seatback frame 15. Inner seat belt 16. Shaft 17. Seat slide handle 18. Shaft 19. Shaft protector 20. Seat slide adjuster

21 INTERIOR - Seat 52A-21 RECARO SEAT ± 3NSm ± 3NSm isassembly steps 1. Reclining knob 2. Reclining cover 3. Cap 4. Front seat cushion assembly 5. Front seat back assembly 6. Seat rail R.H. 7. Seat rail L.H. 8. Seat slide lever

22 52A-22 INTERIOR - Seat REMOVAL SERVICE POINT AA" REMOVAL OF HEAREST GUIE REAR SEAT REMOVAL AN INSTALLATION 2 22 ± 4NSm isassembly steps "BA 1. Rear seat cushion assembly "AA 2. Rear seatback assembly 3. Rear seat hook

23 Rear seat back assembly Attachment wire INTERIOR - Seat 52A-23 INSTALLATION SERVICE POINTS "AA INSTALLATION OF REAR SEATBACK ASSEMBLY/REAR SEATBACK SIE ASSEMBLY L.H., R.H. Press the rear seatback assembly in the direction shown in the illustration and fit the attachment wire into the hook securely to install the rear seatback assembly. Hook Rear seat cushion assembly "BA INSTALLATION OF REAR SEAT CUSHION ASSEMBLY Fit the rear seat cushion into the rear seat hook securely. Rear seat hook

24 52A-24 INTERIOR - Seat ISASSEMBLY AN REASSEMBLY Removal steps 1. Rear seat cushion cover 2. Rear seat cushion pad 3. Rear seatback cover 4. Rear seatback pad

25 SEAT BELT FRONT SEAT BELT REMOVAL AN INSTALLATION INTERIOR - Seat Belt 52A ± 10 NSm 44 ± 10 NSm ± 10 NSm 44 ± 10 NSm 8 Outer seat belt removal steps 1. Sash guide cover 2. Seat belt lower anchor bolt connection Center pillar trim, lower (Refer to P.52A-15.) 3. Bracket 4. Seat belt shoulder anchor bolt connection 5. Outer seat belt with pre-tensioner 6. Center pillar trim, upper (Refer to P.52A- 15.) 7. Adjustable seat belt anchor Inner seat belt removal steps Shield cover (Refer to P.52A-20.) 8. Inner seat belt

26 52A-26 INTERIOR - Seat belt REAR SEAT BELT REMOVAL AN INSTALLATION 44 ± 10 NSm 44 ± 10 NSm 4 44 ± 10 NSm 3 44 ± 10 NSm Removal steps Rear seat cushion assembly (Refer to P.52A-22.) Rear seatback assembly (Refer to P.52A-22.) Rear shelf trim (Refer to P.52A-15.) 1. Inner seat belt 2. Center seat belt, inner 3. Center seat belt, outer 4. Outer seat belt

27 52B-1 SUPPLEMENTAL RESTRAINT SYSTEM (SRS) CONTENTS GENERAL INFORMATION... 2 SRS SERVICE PRECAUTIONS... 3 SPECIAL TOOLS... 5 TEST EQUIPMENT... 6 TROUBLESHOOTI... 6 SRS MEINTENANCE POST-COLLISION IAGNOSIS INIVIUAL COMPONENT SERVICE WARNI/CAUTION LABELS SRS AIR BAG CONTROL UNIT (SRS-ECU) AIR BAG MOULES AN CLOCK SPRI SEAT BELT PRE-TENSIONER AIR BAG MOULE AN SEAT BELT PRE-TENSIONER ISPOSAL PROCEURES Undeployed Air Bag Module and Seat Belt Pre-tensioner isposal eployed Air Bag Module and Seat Belt Pre-tensioner isposal Procedures CAUTION Carefully read and observe the information in the SERVICE PRECAUTIONS (P.52B-3.) prior to any service. For information concerning troubleshooting or maintenance, always observe the procedures in the Troubleshooting (P.52B-6.) section. If any SRS components are removed or replaced in connection with any service procedures, be sure to follow the procedures in the INIVIUAL COMPONENT SERVICE section (P.52B-49.) for the components involved. If you have any questions about the SRS, please contact your local distributor.

28 52B-2 SRS - General Information GENERAL INFORMATION To improve safety, the SRS and seat belts with pre-tensioner. These systems enhance collision safety by restraining the front passengers in case of an accident. The SRS works with the pre-tensioner simultaneously when a collision is detected. The SRS consists of two air bag modules, SRS air bag control unit (SRS-ECU), SRS warning lamp and clock spring. The air bags are located in the center of the steering wheel, above the glove box. Each air bag has a folded air bag and an inflator unit. The SRS-ECU under the floor console monitors the system and has a safing G-sensor and an analog G-sensor. The warning lamp on the instrument panel indicates the operational status of the SRS. The clock spring is installed in the steering column. The seat belt pre-tensioner is built into the front seat belt retractor. Only authorized service personnel should do work on or around the SRS components and seat belt with pre-tensioner. Those service personnel should read this manual carefully before starting any such work. Extreme care must be used when servicing the SRS to avoid injury to the service personnel (by inadvertent deployment of the air bags or inadvertent operation of the seat belt with pre-tensioner) or the driver (by rendering the SRS or the seat belt with pre-tensioner inoperative). river s air bag Front passenger s air bag SRS warning lamp river s air bag module Front passenger s air bag module Clock spring iagnosis connector Seat belt with pre-tensioner SRS-ECU

29 SRS - SRS Service Precautions 52B-3 SRS SERVICE PRECAUTIONS 1. In order to avoid injury to yourself or others from accidental deployment of the air bag and accidental operation of the seat belt with pre-tensioner during servicing, read and carefully follow all the precautions and procedures described in this manual. 2. o not use any electrical test equipment on or near SRS components, except those specified on P.52B Never Attempt to Repair the Following Components: SRS air bag control unit (SRS-ECU) Clock spring river s and front passenger s air bag modules Seat belt with pre-tensioner NOTE If any of these components are diagnosed as faulty, they should only be replaced, in accordance with the INIVIUAL COM- PONENTS SERVICE procedures in this manual. (Refer to P.52B-49.) Insulating tape Battery 4. After disconnecting the negative ( ) battery cable, wait 60 seconds at least before any service and insulate the disconnected cable with tape. The SRS retain enough voltage to deploy the air bags for a short time even after the disconnection of the battery. So, serious injury may result by accidental air bag deployment if a work is done on the SRS just after the disconnection of the battery. SRS-ECU connector 5. o not attempt to repair the wiring harness connectors of the SRS. If the connector(s) are diagnosed as defective, replace the wiring harness(es). If the harness(es) are diagnosed as faulty, replace or repair the wiring harness(es) according to the table that follows.

30 52B-4 SRS - SRS Service Precautions SRS-ECU Terminal No. estination of harness Corrective action 7 Instrument panel wiring harness Earth Repair or replace each wiring harness 8 Instrument panel wiring harness Combination meter (SRS warning lamp) 9, 10 Instrument panel wiring harness Front passenger s air bag module 11, 12 Instrument panel wiring harness Clock spring river s air bag module) Repair or replace the dash wiring harness. Replace clock spring. 13 Instrument panel wiring harness Junction block (fuse No.3) Repair or replace each wiring harness. 16 Instrument panel wiring harness Junction block (fuse No.2) 20 Instrument panel wiring harness iagnosis connector 29, 30 Floor wiring harness river s seat belt pre-tensioner 27, 28 Floor wiring harness Front passenger s seat belt pre-tensioner 6. Inspection of the SRS-ECU harness connector should be carried out by the following procedure. Insert the special tool (probe, MB991222, in the harness set) into the connector from harness side (rear side), and connect the tester to this probe. If any tool than specified is used, damage to the harness and other components will result. Furthermore, measurement should not be carried out by touching the probe directly against the terminals from the front of the connector. The terminals are plated to increase their conductivity, so that if they are touched directly by the probe, the plating may break, which will cause drops in reliability. SRS-ECU harness connector MB SRS-ECU harness connector (rear view) 7. SRS components and seat belt with pre-tensioner should not be subjected to hart, so remove the SRS-ECU, driver s and front passenger s air bag modules, clock spring, and seat belt with pre-tensioner before drying or baking the vehicle after painting. SRS-ECU, air bag module, clock spring : 93 or more Seat belt with pre-tensioner : 90 or more 8. Whenever you finish servicing the SRS, check warning lamp operation to make sure that the system functions properly. (Refer to P.52B-6.) 9. Make certain that the ignition switch is LOCK (OFF) position when the MUT-II is connected or disconnected. 10. If you have any questions about the SRS, please contact your local distributor. NOTE SERIOUS INJURY CAN RESULT FROM UNINTENE AIR BAG EPLOYMENT, SO USE ONLY THE PROCEURES AN EQUIPMENT SPECIFIE IN THIS MANUAL.

31 SRS - Special Tools 52B-5 SPECIAL TOOLS Tool Number Name Use MB MUT-II sub assembly Reading and erasing diagnosis codes Reading trouble period Reading erase times MB ummy resistor Checking SRS air bag circuit MB Resistor harness MB SRS check harness Checking SRS electrical circuitry A B MB A: MB B: MB C: MB : MB Harness set A: Check harness B: LE harness C: LE harness adapter : Probe Checking continuity and measuring voltage at SRS-ECU harness connector C MB Steering wheel puller Removing steering wheel MR SRS air bag adapter harness eploying driver s air bag module inside vehicle

32 52B-6 SRS - Special Tools/Test Equipment/Troubleshooting Tool Number Name Use MB SRS air bag adapter harness eploying front passenger s air bag module inside or outside vehicle MR203491or MB SRS air bag adapter harness eploying driver s air bag module inside vehicle <RS> TEST EQUIPMENT Tool Name Use igital multi-meter Checking SRS electrical circuitry Use multi-meter for which the maximum test current is 2 ma or less at minimum range of resistance measurement TROUBLESHOOTI STANAR FLOW OF IAGNOSTIC TROUBLESHOOTI Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points. IAGNOSIS FUNCTION IAGNOSIS COES CHECK Connect the MUT-II to the diagnosis connector (16-pin) under the instrument under cover, then check diagnosis codes. (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points.) ERASI IAGNOSIS COE Connect the MUT-II to the diagnosis connector and erase the diagnosis code. Turn off the ignition switch before connecting or disconnecting the MUT-II. SRS WARNI LAMP CHECK 1. Check that the SRS warning lamp comes on when the ignition switch is turned ON. 2. Check that the SRS warning lamp illuminates for about 7 seconds and then goes out. 3. If this is not the cause, check the diagnosis codes. SRS warning lamp

33 SRS - Troubleshooting 52B-7 SRS SYSTEM CIRCUIT IAGRAM Ignition switch (IG 1 ) SRS-ECU J/B (common fuse) No.2 7.5A No.3 7.5A 16 Combination Meter Connector lock switch* OFF 13 8 ON OFF 7 ON Connector lock switch* OFF Connector lock switch* OFF river s air bag module (squib) ON OFF ON OFF 11 C-207 ON ON Clock spring C C-22 OFF iagnosis connector Front passenger s seat air bag module(squib) C-109 ON OFF ON Connector lock switch* 10 9 OFF ON OFF Seat belt pre-tensioner (L.H.) -28 ON OFF ON Connector lock switch* ON OFF Connector lock switch* OFF Seat belt pre-tensioner (R.H.) ON OFF -26 ON Connector lock switch* SRS-ECU connector NOTE *:connector engaged:on connector disengaged:off

34 52B-8 SRS - Troubleshooting CONNECTOR FOR SRS AIR BAG The SRS air bag system connector is yellow or red. To enhance system reliability, a connector lock switch is adopted for the SRS-ECU connector, and each air bag module and clock spring connector, each seat belt with pre-tensioner <the connector A in the following illustration (black)>). A river s seat belt pre-tensioner SRS-ECU Clock spring A river s air bag module Front passenger s air bag module A A Front passenger s seat belt pre-tensioner SQUIB CIRCUIT CONNECTOR LOCK SWITCH Mechanism to automatically short-circuit the power supply terminal and the earth terminal of the air bag squib circuit when the connector is disconnected. The short spring inside the connector allows to short-circuit the power supply terminal and the earth terminal of the squib (no difference in voltage occurs between the terminals) to prevent the squib from getting charged with static electricity. CAUTION When the connector is disconnected, it is normal for short-circuiting to occur between the connector terminals. When connector is connected OFF When connector is disconnected OFF Squib ON OFF SRS-ECU Squib ON OFF SRS-ECU ON ON <Connector lock switch structure (Example: SRS-ECU connector)> ECU side connector Harness side connector A B Terminal (Male) Terminal (Female) When connector is connected Partition panel Short spring Section A - A A Section B - B B Terminal (Male) Terminal (Female) Terminal (Male) Partition panel Terminal (Female) Short spring Partition panel Short spring

35 SRS - Troubleshooting 52B-9 SRS warning lamp Ignition switch (IG 1 ) WARNI LAMP CIRCUIT CONNECTOR LOCK SWITCH Mechanism to automatically short-circuit the power supply terminal and the earth terminal of the warning lamp circuit when the SRS-ECU connector is disconnected. The structure is the same as that of squib circuit connector lock switch. SRS-ECU harness side connector Connector* lock switch ON ON OFF Short spring OFF NOTE *:connector engaged:on connector disengaged:off INSPECTION CHART FOR IAGNOSIS COES Inspect according to the inspection chart that is appropriate for the malfunction code. Code no. iagnostic item Page 14 SRS-ECU front impact analog G-sensor system 52B SRS-ECU front impact safing G-sensor system Short circuit in the 52B-11 sensor 16 SRS-ECU front impact safing G-sensor system Open circuit in the sensor 21* 1 river s air bag module (squib) system Short circuit between terminals of the squib circuit 52B-12 22* 1 river s air bag module (squib) system Open in the squib 52B-16 circuit 24* 1 Front passenger s air bag module (squib) system Short circuit between terminals of the squib circuit 52B-20 25* 1 Front passenger s air bag module (squib) system Open in the squib 52B-22 circuit 26* 1 river s seat belt pre-tensioner (squib) system Short circuit between terminals of the squib circuit 52B-23 27* 1 river s seat belt pre-tensioner (squib) system Open in the squib 52B-25 circuit 28* 1 Front passenger s seat belt pre-tensioner (squib) system Short circuit between terminals of the squib circuit 52B-26 29* 1 Front passenger s seat belt pre-tensioner (squib) system/ Open in the squib 52B-28 circuit 31 SRS-ECU C-C converter system Increased terminal 52B-11 voltage 32 SRS-ECU C-C converter system ecreased terminal voltage

36 52B-10 SRS - Troubleshooting Code no. iagnostic item Page 34* 2 Connector lock system 52B SRS-ECU (deployed air bag) system 52B-29 41* 2 Power supply circuit system (fuse No.2 circuit) 52B-30 42* 2 Power supply circuit system (fuse No.3 circuit) 52B-32 43* 2 SRS warning lamp drive circuit system Lamp does not illuminate. 52B-33 SRS warning lamp drive circuit system Lamp does not go out. 52B-33 44* 2 SRS warning lamp drive circuit system 52B SRS-EUC internal circuit system including non- volatile memory (EEPROM) 52B river s air bag module (squib) ignition drive circuit system Short in the ignition 52B-11 drive circuit 52 river s air bag module (squib) ignition drive circuit system Open in the ignition drive circuit 54 Front passenger s air bag (squib) ignition drive circuit Short in the ignition 52B-11 system drive circuit 55 Front passenger s air bag (squib) ignition drive circuit system 56 river s seat belt pre-tensioner (squib) ignition drive circuit system 57 river s seat belt pre-tensioner (squib) ignition drive circuit system 58 Front passenger s seat belt pre-tensioner (squib) ignition drive circuit system 59 Front passenger s seat belt pre-tensioner (squib) ignition drive circuit system Open in the ignition drive circuit Short in the ignition drive circuit Open in the ignition drive circuit Short in the ignition drive circuit Open in the ignition drive circuit 52B-11 52B river s air bag module (squib) system Short-circuited to 52B-34 power supply 62 river s air bag module (squib) system Short-circuited to earth 64 Front passenger s air bag module (squib) system Short-circuited to 52B-38 power supply 65 Front passenger s air bag module (squib) system Short-circuited to earth 66 river s seat belt pre-tensioner (squib) system Short-circuited to 52B-39 power supply 67 river s seat belt pre-tensioner (squib) system Short-circuited to earth 68 Front passenger s seat belt pre-tensioner (squib) system Short-circuited to 52B-40 power supply 69 Front passenger s seat belt pre-tensioner (squib) system Short-circuited to earth NOTE (1) * 1 : If the trouble(s) are removed, the SRS warning lamp go out with diagnosis code history stored. (2) * 2 : If the trouble(s) are removed, the SRS warning lamp will go out with diagnosis code history automatically erased. (3) When the battery has been discharged, diagnosis code No.41 or 42 is stored. Check the battery when either of these is displayed.

37 SRS - Troubleshooting 52B-11 INSPECTION PROCEURE CLASSIFIE BY IAGNOSIS COE Code No.14, 15, 16, 31, 32, 45, 51, 52, 54, 55, 56, 57, 58, 59 System inside SRS-ECU Malfunction is present inside SRS-ECU. See table below for what each code tells. Probable cause Malfunction of SRS-ECU Code No. efective parts Trouble 14 Front impact analog G-sensor Not operating Abnormal characteristics Abnormal output 15 Front impact safing G-sensor Short in the circuit 16 Open in the circuit 31 C-C converter Terminal voltage of the converter higher than specified for five seconds or more 32 Terminal voltage of the converter lower than specified for 5 seconds or more (this code is not detected when code No.41 or 42, which indicates discharged battery, has been detected) 45 Non-volatile memory (EEPROM) efective parts inside 51 river s air bag module (squib) Short in the circuit 52 ignition drive circuit Open in the circuit Front passenger s air bag module (squib) ignition drive circuit 56 river s seat belt pre-tensioner 57 (squib) ignition drive circuit 58 Front passenger s seat belt pre-ten- 59 sioner (squib) ignition drive circuit Short in the circuit Open in the circuit Short in the circuit Open in the circuit Short in the circuit Open in the circuit If the above-mentioned code No. is output, replace the SRS-ECU.

38 52B-12 SRS - Troubleshooting Code No.21 river s air bag module (squib) system This code is output when short circuit occurs between terminals of the SRS-ECU driver s air bag module (squib) circuit. However, SRS warning lamp goes out when a normal operation is resumed (diagnosis code is not cleared.) Possible Cause Connector engagement faulty or short bar faulty* Short circuit in the clock spring Short circuit between terminals of the driver s air bag module (squib) circuit Faulty connector SRS-ECU inoperable NOTE: (1) *: The connector of the squib circuit contains a short bar (short-circuiting the positive (+) cable and the negative (-) cable to avoid an erroneous deployment caused by static electricity when a connector is not connected). Thus, when a connector is connected, the short bar may not be released due to improper engagement of the connector or faulty connector as shown in the illustration below. isconnect the connector as shown in the illustration below, then reconnect it. Check that a diagnosis code is output again after erasing the memory. If the diagnosis code is not output, the above-mentioned code is output due to improper engagement of the connector. C-21 C-204 C-207 SRS-ECU Clock spring river s air bag module (2) Two different types of driver s air bag modules by model are featured. Thus, two types of air bag module by model are described in the following flowchart. RS: Steering wheel and air bag module separate type RS-II: Steering wheel and air bag module incorporate type <RS> <RS-II>

39 SRS - Troubleshooting 52B-13 <RS> ummy resistor (MB991865) resistance (3Ω) Resistor harness (MB991866) C-204 clock spring harness side connector <Clock spring check> MUT-II self-diag code Release the clock spring connector (2-pin) C-204. Connect the dummy resistor (MB991865) to the resistor harness (MB991866). Insert the resistor harness (MB991866) behind the harness side connector C-204. o not directly insert a probe or other devices at the front of the connector to avoid a possible decrease in the contact pressure. Connect the negative (-) terminal of the battery Check the diagnosis code again after erasing the memory. Is code No.21 output? YES NO <Check the circuit between the SRS-ECU and clock spring> Measure at the SRS-ECU connector C- 21. isconnect the SRS-ECU connector C-21. Release the the clock spring connector C-204. isconnect the connector and short-circuit the squib circuit before releasing the short bar of the SRS-ECU connector in the following operation. Cable bands between terminals 11, 12 and the short bar (width:3 mm, thickness:0.5 mm) between terminals 11 and 12 and the short bar, and release the short bar. (See Figure A.) As the short bar may not be releasable if inserted insufficiently, insert more than 4 mm. Measure at the harness side Continuity check between terminals 11 and 12 o not directly insert a probe or other devices at the front of the connector to avoid a possible decrease in the contact pressure. : No continuity Connector C-21 Check the clock spring (Refer to P.52B-59.) YES Replace the driver s air bag module (squib). Check connector: C-21, C-204 Check the trouble symptoms. NO Replace the clock spring. Correct Check the harness between the clock spring and the SRS-ECU, and repair if necessary. Figure A Section A - A Cable band and etc. A Front view of SRS-ECU connector C-21 (harness side) Terminal A 4 mm or more Short bar Replace the SRS-ECU.

40 52B-14 SRS - Troubleshooting <RS-II> ummy resistor (MB991865) resistance (3Ω) Resistor harness (MB991866) 1 <river s seat air bag module (squib) check> MUT-II self-diag code isconnect the clock spring connector No.1 (connector connected with the air bag module). Connect the dummy resistor (MB991865) to the resistor harness (MB991866). Insert the resistor harness (MB991866) behind the clock spring connector No.1. o not directly insert a probe or other devices at the front of the connector to avoid a possible decrease in the contact pressure. Connect the negative (-) terminal of the battery Check the diagnosis code again after erasing the memory. Is code No.21 output? YES NO Replace the driver s air bag module (squib). ummy resistor (MB991865) resistance (3Ω) Resistor harness (MB991866) <Clock spring check> MUT-II self-diag code Release the clock spring connector (2- pin) C-204. Connect the dummy resistor (MB991865) to the resistor harness. Insert the resistor harness (MB991866) behind the harness side connector C-204. o not directly insert a probe or other devices at the front of the connector to avoid a possible decrease in the contact pressure. Connect the negative (-) terminal of the battery Check the diagnosis code again after erasing the memory. Is code No.21 output? Clock spring harness side connector C-204 YES NO Go to Next Page Replace the clock spring.

41 SRS - Troubleshooting 52B-15 From Previous Page <Check the circuit between the SRS-ECU and clock spring> Measure at the SRS-ECU connector C-21. YES isconnect the SRS-ECU connector C-21. Release the the clock spring connector C-204. isconnect the connector and short-circuit the squib circuit before releasing the short bar of the SRS-ECU connector in the following operation. Cable bands between terminals 11, 12 and the short bar (width:3 mm, thickness:0.5 mm) between terminals 11 and 12 and the short bar, and release the short bar. (See Figure A.) As the short bar may not be releasable if inserted insufficiently, insert more than 4 mm. Measure at the harness side Continuity check between terminals 11 and 12 o not directly insert a probe or other devices at the front of the connector to avoid a possible decrease in the contact pressure. : No continuity Check connector: C- 21, C-204 Check the trouble symptoms. Figure A Section A - A Cable band and etc. A A Correct Check the harness between the clock spring and the SRS-ECU, and repair if necessary. Front view of SRS-ECU connector C-21 (harness side) Terminal Connector C-21 4 mm or more Short bar Replace the SRS-ECU.

42 52B-16 SRS - Troubleshooting Code No.22 river s air bag module (squib) system This code is output when open circuit occurs in the SRS-ECU driver s air bag module (squib) circuit. However, SRS warning lamp goes out when a normal operation is resumed (diagnosis code is not cleared.) Possible Cause Open in the clock spring Half open in the circuit due to improper neutral positioning of the clock spring Open in the driver s air bag module (squib) circuit river s air bag module (squib) connector falling out Connector improper contact SRS-ECU inoperable NOTE: Two different types of driver s air bag modules by model are featured. Thus, two types of air bag module by model are described in the following flowchart. RS: Steering wheel and air bag module separate type RS-II: Steering wheel and air bag module incorporate type <RS> <RS-II>

43 SRS - Troubleshooting 52B-17 <RS> ummy resistor (MB991865) resistance (3Ω) Resistor harness (MB991866) Clock spring harness side connector C- 204 <Clock spring check> MUT-II self-diag code Release the clock spring connector (2-pin) C-204. Connect the dummy resistor (MB991865) to the resistor harness (MB991866). Insert the resistor harness (MB991866) behind the harness side connector C-204. o not directly insert a probe or other devices at the front of the connector to avoid a possible decrease in the contact pressure. Connect the negative (-) terminal of the battery Check the diagnosis code again after erasing the memory. Is code No.22 output? YES NO <Check the circuit between the SRS-ECU and clock spring> Measure at the SRS-ECU connector C-21 and the clock spring connector C-204. isconnect the SRS-ECU connector C-21 and the clock spring connector C-204 and measure at the harness side. Continuity check between the following terminals Connector C-21 Connector C o not directly insert a probe or other devices at the front of the connector to avoid a possible decrease in the contact pressure. : Continuity (2Ω or less) Connector C-21 Connector C-204 Check the clock spring (Refer to P.52B-59.) YES Replace the driver s air bag module (squib). Check connector: C-21, C-204 Check the trouble symptoms. NO Replace the clock spring. Correct Check the harness between the clock spring and the SRS-ECU, and repair if necessary. Replace the SRS-ECU.

44 52B-18 SRS - Troubleshooting <RS-II> ummy resistor (MB991865) resistance (3Ω) Resistor harness (MB991866) 1 <river s seat air bag module (squib) check> MUT-II self-diag code isconnect the clock spring connector No.1 (connector connected with the air bag module). Connect the dummy resistor (MB991865) to the resistor harness (MB991866). Insert the resistor harness (MB991866) behind the clock spring connector No.1. o not directly insert a probe or other devices at the front of the connector to avoid a possible decrease in the contact pressure. Connect the negative (-) terminal of the battery Check the diagnosis code again after erasing the memory. Is code No.22 output? YES NO Replace the steering wheel- driver s air bag module assembly. ummy resistor (MB991865) resistance (3Ω) Resistor harness (MB991866) C-204 clock spring harness side connector <Clock spring check> MUT-II self-diag code Release the clock spring connector (2-pin) C-204. Connect the dummy resistor (MB991865) to the resistor harness (MB991866). Insert the resistor harness (MB991866) behind the harness side connector C-204. o not directly insert a probe or other devices at the front of the connector to avoid a possible decrease in the contact pressure. Connect the negative (-) terminal of the battery Check the diagnosis code again after erasing the memory. Is code No.22 output? YES NO Go to Next Page Replace the clock spring.

45 SRS - Troubleshooting 52B-19 From Previous Page YES <Check the circuit between the SRS-ECU and clock spring> Measure at the C-21 SRS-ECU connector and C-204 clock spring connector. isconnect the SRS-ECU connector C-21 and the clock spring connector C-204 and measure at the harness side. Continuity check between the following terminals C-21 connector C-204 connector o not directly insert a probe or other devices at the front of the connector to avoid a possible decrease in the contact pressure. : Continuity (2Ω or less) Check connector: C-21, C-204 Check the trouble symptoms. Correct Check the harness between the clock spring and the SRS-ECU, and repair if necessary. Connector C-21 Connector C-204 Replace the SRS-ECU.

46 52B-20 SRS - Troubleshooting Code No.24 Front passenger s air bag module (squib) system This code is output when short circuit occurs between terminals of the SRS-ECU front passenger s air bag (squib) circuit. However, SRS warning lamp goes out when a normal operation is resumed (diagnosis code is not cleared.) Possible Cause Connector engagement faulty or short bar faulty* Short circuit between terminals of the front passenger s air bag (squib) circuit Faulty connector SRS-ECU inoperable NOTE: *: The connector of the squib circuit contains a short bar (short-circuiting the positive (+) cable and the negative (-) cable to avoid an erroneous deployment caused by static electricity when a connector is not connected). Thus, when a connector is connected, the short bar may not be released due to improper engagement of the connector or faulty connector as shown in the illustration below. isconnect the connector as shown in the illustration below, then reconnect it. Check that a diagnosis code is output again after erasing the memory. If the diagnosis code is not output, the above-mentioned code is output due to improper engagement of the connector. C-21 C-109 SRS-ECU Front passenger s air bag module

47 SRS - Troubleshooting 52B-21 ummy resistor (MB991865) resistance (3Ω) Instrumental panel wiring harness Resistor harness (MB991866) Front passenger s air bag module connector <Check the front passenger s air bag module (squib)> MUT-II self-diag code Connect the dummy resistor (MB991865) to the resistor harness (MB991866). isconnect the front passenger s air bag module connector C-109 and insert the resistor harness (MB991866) behind the harness side connector. o not directly insert a probe or other devices at the front of the connector to avoid a possible decrease in the contact pressure. Connect the negative (-) terminal of the battery Check the diagnosis code again after erasing the memory. Is code No.24 output? <Check the circuit between the SRS-ECU and the front passenger s air bag module> Measure at the C-21 SRS-ECU connector. YES isconnect the SRS-ECU connector C-21. isconnect the front passenger s air bag module connector C-109. isconnect the connector and short-circuit the squib circuit before releasing the short bar of the SRS-ECU connector in the following operation. Cable bands between terminals 9, 10 and the short bar (width:3 mm, thickness:0.5 mm) between terminals 11 and 12 and the short bar, and release the short bar. (See Figure A.) As the short bar may not be releasable if inserted insufficiently, insert more than 4 mm. Measure at the harness side Continuity check between terminals 9 and 10 o not directly insert a probe or other devices at the front of the connector to avoid a possible decrease in the contact pressure. : No continuity Connector C-21 NO Replace the front passenger s seat air bag module (squib). Check connector: C-21, C-109 YES Check the trouble symptoms. Correct Check the harness between the front passenger s air bag module and the SRS-ECU, and repair if necessary. Figure A Section A - A Cable band and etc. Front view of C-21 SRS-ECU connector (harness side). Terminal A A 4 mm or more Short bar Replace the SRS-ECU.

48 52B-22 SRS - Troubleshooting Code No.25 Front passenger s air bag module (squib) system This code is output when open circuit occurs in the SRS-ECU front passenger s air bag (squib) circuit. However, SRS warning lamp goes out when a normal operation is resumed (diagnosis code is not cleared.) Possible Cause Open in the front passenger s air bag module (squib) circuit Connector improper contact SRS-ECU inoperable ummy resistor (MB991865) resistance (3Ω) Instrumental panel wiring harness Resistor harness (MB991866) Front passenger s air bag module connector <Check the front passenger s air bag module (squib)> MUT-II self-diag code Connect the dummy resistor (MB991865) to the resistor harness (MB991866). isconnect the front passenger s air bag module connector C-109 and insert the resistor harness (MB991866) behind the harness side connector. o not directly insert a probe or other devices at the front of the connector to avoid a possible decrease in the contact pressure. Connect the negative (-) terminal of the battery Check the diagnosis code again after erasing the memory. Is code No.25 output? YES NO <Check the circuit between the SRS-ECU and the front passenger s air bag module> Measure at the SRS-ECU connector C-21 and front passenger s air bag module connector C-109. isconnect the SRS-ECU connector C-21 and the front passenger s air bag module connector C-109, and measure at the harness side. Continuity check between the following terminals Connector C-21 Connector C o not directly insert a probe or other devices at the front of the connector to avoid a possible decrease in the contact pressure. : Continuity (2Ω or less) Replace the front passenger s seat air bag module (squib). Check connector: C-21, C-109 Check the trouble symptoms. Correct Check the harness between the front passenger s air bag module and the SRS-ECU, and repair if necessary. Connector C-21 Connector C-109 Replace the SRS-ECU.

49 SRS - Troubleshooting 52B-23 Code No.26 river s seat belt pre-tensioner (squib) system This code is output when short circuit occurs between terminals of the SRS-ECU driver s seat belt pre-tensioner (squib) circuit. However, SRS warning lamp goes out when a normal operation is resumed (diagnosis code is not cleared.) Possible Cause Connector engagement faulty or short bar faulty* Short circuit between terminals of the driver s seat belt pre-tensioner (squib) circuit Faulty connector SRS-ECU inoperable NOTE: *: The connector of the squib circuit contains a short bar (short-circuiting the positive (+) cable and the negative (-) cable to avoid an erroneous deployment caused by static electricity when a connector is not connected). Thus, when a connector is connected, the short bar may not be released due to improper engagement of the connector or faulty connector as shown in the illustration below. isconnect the connector as shown in the illustration below, then reconnect it. Check that a diagnosis code is output again after erasing the memory. If the diagnosis code is not output, the above-mentioned code is output due to improper engagement of the connector. C-41 C-133* 1, C-112* 2-28* 1, -26* 2 NOTE *1: L.H. drive vehicles *2: R.H. drive vehicles SRS-ECU river s seat belt pre-tensioner

50 52B-24 SRS - Troubleshooting ummy resistor (MB991865) resistance (3Ω) Instrumental panel wiring harness Resistor harness (MB991866) river s seat belt pre-tensioner connector <Check the driver s seat belt pre-tensioner (squib)> MUT-II self-diag code Connect the dummy resistor (MB991865) to the resistor harness (MB991866). isconnect the driver s seat belt pre-tensioner connector -28* 1 and -26 *2 and connect to the resistor harness (MB991866) behind the harness side connector. o not directly insert a probe or other devices at the front of the connector to avoid a possible decrease in the contact pressure. Connect the negative (-) terminal of the battery Check the diagnosis code again after erasing the memory. Is code No.26 output? YES <Check the circuit between the SRS-ECU and the driver s seat belt pretensioner> Measure at the SRS-ECU connector C-41. isconnect the SRS-ECU connector C-41. isconnect the driver s seat belt pre-tensioner connector -28* 1 and -26 *2. isconnect the connector and short-circuit the squib circuit before releasing the short bar of the SRS-ECU connector in the following operation. Cable bands between terminals 29, 30 and the short bar (width:3 mm, thickness:0.5 mm) between terminals 11 and 12 and the short bar, and release the short bar. (See Figure A.) As the short bar may not be releasable if inserted insufficiently, insert more than 4 mm. Measure at the harness side Continuity check between terminals 29 and 30 o not directly insert a probe or other devices at the front of the connector to avoid a possible decrease in the contact pressure. : No continuity Connector C-41 NO Replace the driver s seat belt pre-tensioner. Check connector: -28* 1, -26 *2, C-133 *1, C-112 *2, C-41 YES Check the trouble Correct symptoms. Check the harness between the driver s seat belt pre-tensioner and the SRS-ECU, and repair if necessary. Figure A Section A - A Cable band and etc. Front view of SRS-ECU connector C-41 (harness side) A A Terminal 4 mm or more Short bar Replace the SRS-ECU. NOTE *1: L.H. drive vehicles *2: R.H. drive vehicles