7.1 Testing Engine, Transmission, and Antilock Brake Systems

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1 Chapter 7 Geo This chapter contains information for testing Geo vehicles with the sian Import Vehicle Communication Software (VCS). The following Geo systems may be available for testing: Engine Transmission ntilock rake System (S) 7.1 Testing Engine, Transmission, and ntilock rake Systems NOTE: i Operations described in this section are not available on all tool platforms. Geo engine, transmission, and antilock brake system testing includes: Code Reading Connectors and Locations on page 53 Hard Codes and Soft Codes on page 61 Clearing Codes on page 61 Field Service Functional Tests on page 61 Prizm ctuator Tests on page Code Reading Connectors and Locations Code reading test connector location, procedure, and adapter use varies by model. z To read Prizm engine codes: Connect the TOY-1 adapter to the connector in the box marked diagnosis on either fenderwell (Figure 7-1). 53

Chapter 7 Geo Testing Engine, Transmission, and ntilock rake Systems Figure 7-1 1989 95 Prizm connector location Connector TOY-1 adapter z To read 1989 95 Prizm engine codes (optional): Jump

2 Chapter 7 Geo Testing Engine, Transmission, and ntilock rake Systems Figure Prizm connector location Connector TOY-1 adapter z To read Prizm engine codes (optional): Jump diagnosis connector pins as shown in Figure 7-2. Terminal E1 Terminal T, TE, or TE1 Figure 7-2 Jump pins for flash codes z To read Metro (except L) engine codes: Connect the MULTI-1 adapter with red terminal converters to the connector near the left side of the engine (Figure 7-3). 54

3 C D E Figure (except L) connector and adapter Connector MULTI-1 adapter C Green D White E lack z To read 1989 Spectrum and Storm engine codes: Connect the MULTI-2-D adapter to the connector near the passenger kick panel (Figure 7-4). C Figure Spectrum and Storm connector and adapter Connector MULTI-2 adapter C MULTI-2-D z To read 1989 Spectrum and Storm engine codes (optional): Jump pins as shown in Figure 7-5. Figure 7-5 Pins to jump for flash codes 55

Chapter 7 Geo Testing Engine, Transmission, and ntilock rake Systems z To read 1989 95 Tracker engine codes: Jump pins as shown in Figure 7-6 on the connector near the left side of the engine.

4 Chapter 7 Geo Testing Engine, Transmission, and ntilock rake Systems z To read Tracker engine codes: Jump pins as shown in Figure 7-6 on the connector near the left side of the engine. Figure Tracker connector jump pins z To read Metro (except L) engine codes: Jump pins as shown in Figure 7-7 on the connector near the left strut tower on the firewall. Figure Metro connector jump pins z To read Storm 1.8L transmission codes: Connect the MULTI-1 adapter to the 5-pin connector under the glove box (Figure 7-8). Connector MULTI-1 adapter Figure Storm 1.8L connector and adapter z To read Storm 1.8L transmission codes (optional): Jump pins as shown in Figure

5 Figure 7-9 Pins to jumper for transmission codes Red lack z To read L and L Metro transmission codes: Connect the MULTI-1 adapter to the 3-pin connector (Figure 7-10) under the left side of the dashboard. C D E Figure L and L Metro connector and adapter Connector MULTI-1 adapter C Green D White E lack z To read L Metro transmission codes: Connect the MULTI-1 adapter as shown in Figure C D E G F Figure L Metro transmission connector and adapter Diagnostic connector 701 pink wire and black/white wire Diagnostic connector 705 black wire and pink/black wire C MULTI-1 adapter D Green 57

6 Chapter 7 Geo Testing Engine, Transmission, and ntilock rake Systems E Steering column F lack G White z To read 1992 Prizm with 4GE and Prizm with 7FE transmission codes: Connect the TOY-1 adapter to the connector shown in Figure Connector TOY-1 adapter Figure Prizm with 4GE and Prizm with 7FE transmission z To read Prizm, L Metro, and L Metro Delco-Moraine VI S codes: Connect the MULTI-1 adapter to the connector under the left dash (Figure 7-13 on page 58). C F E D C G H J K L M D Figure Prizm, L Metro, and L Metro S connector Connector MULTI-1 adapter C lack D Green z To read Tracker Kelsey-Hayes RWL S codes: 1. Locate the connector under the dash, left of the steering column near the fuse box. 2. Turn the key on with the engine off. 58

7 3. Release the parking brake and jump pins 3 and 5 (Figure 7-14) for two seconds, then remove the wire to flash codes. Figure Tracker RWL S connector jump pins Manual Code Reading Several different types of manual code display are used for Geo models: Type 01 engine codes, see Figure 7-15 and Table 7-1 on page 59 Type 09 engine codes, see Figure 7-16 and Table 7-2 on page 60 Type 01 transmission codes, see Figure 7-17 and Table 7-3 on page 60 Type 09 transmission codes, see Figure 7-18 and Table 7-4 on page 60 S codes, see Figure 7-19 On Off First Digit (2) Second 1 2 Digit (3) Code 23 Code 12 Figure 7-15 Engine Code Type 01 Table 7-1 Engine Code Type 01 Pattern: Read codes on: Start codes by: When done: 10s and 1s CHECK ENGINE lamp Install a jumper wire between two pins and turn the ignition on. Turn the ignition off, remove jumper wire, then clear codes. Code 12 always appears first. Each code repeats three times, including code 12. The code display cycle repeats as long as system is in a diagnostic state. 59

8 Chapter 7 Geo Testing Engine, Transmission, and ntilock rake Systems 0.5 On Off First Digit (2) Second 1 2 Digit (3) Code 23 Code 12 Restart Figure 7-16 Engine Code Type 09 Table 7-2 Engine Code Type 09 Pattern: 10s and 1s Read codes on: CHECK ENGINE lamp Start codes by: Use TOY-1 adapter, turn the ignition on, and select Manual Codes. When done: Turn the ignition off, disconnect the scan tool, the clear codes. On Off First Digit (2) Second 1 2 Digit (3) Code 23 Code 12 Figure 7-17 Transmission Code Type 01 Table 7-3 Transmission Code Type 01 Pattern: Read codes on: Start codes by: When done: 10s and 1s ECONO lamp Connect the MULTI-1 adapter, turn the ignition on, and select Manual Codes, or install a jumper wire between two pins and turn the ignition on. Turn the ignition off, remove the jumper wire, then clear codes. Code 12 always appears first. Each code repeats three times, including code 12. The code display cycle repeats as long as system is in a diagnostic state. 0.5 On Off First Digit (2) Second 1 2 Digit (3) Code 23 Code 12 Restart Figure 7-18 Transmission Code Type 09 Table 7-4 Transmission Code Type 09 Pattern: 10s and 1s Read codes on: O/D OFF lamp Start codes by: Connect the TOY-1 adapter, turn the O/D switch on, turn the ignition on, then select Manual Codes. When done: Turn the ignition off, disconnect the scan tool, then clear codes. 60

9 Geo S codes flash in a straight count with one long flash at the end (Figure 7-19). The code repeats, only one code is stored. Lamp On Lamp Off Code 4 Code 4 Figure 7-19 S diagnostic code pulse Hard Codes and Soft Codes Some models separate hard codes from soft ( historical ) codes (Figure 7-20). RPM_1234 O2(mV) 689 MC DWL( ) 38 ** DIGNOSTIC MODE. DO NOT DRIVE. ** 13 O2 SENSOR NOT WRM ENOUGH HC HISTORICL CODES FOLLOW Figure 7-20 Data display with historical codes Clearing Codes Some 1987 and later models allow clearing trouble codes from the Exit menu (Figure 7-21). RESUME LED MENU PRINT SCREEN > CLER ECM CODES PRINT FRME FIX LINE 2 RM MOVIE Figure 7-21 CLER ECM CODES If the code-clearing operation fails for any reason, the previous codes reappear at the top of the data list when you return to CODES & DT. If this happens, repeat code clearing Field Service Functional Tests NOTE: i Operations described in this section are not available on all tool platforms. The Field Service functional test is available for most 1980½ and later Geo models with General Motors control systems. Selecting FIELD SERVICE displays a screen like Figure

10 Chapter 7 Geo Testing Engine, Transmission, and ntilock rake Systems FIELD SERVICE - LDL PINS 1 & SHORTED WITH KEY ON/ENGINE OFF, CE LMP FLSHES TROULE CODES, ND SOME ECM OUTPUTS RE EXERCISED. PRESS N TO EXIT. Figure 7-22 Sample Field Service IMPORTNT: Do not enter Field Service mode while driving a vehicle. ECM changes to ignition timing, fuel delivery, and other engine functions may affect engine operation and vehicle control. During Field Service, the VCS grounds diagnostic pin in the LDL connector. The ECM does not transmit data in this mode and new trouble codes cannot set. You can use FIELD SERVICE to check or adjust ignition timing or the idle minimum air rate on some models. With the key on and the engine off, the instrument panel CHECK ENGINE lamp flashes stored trouble codes if any are present or code 12 if no codes are present. With the key on and the engine off, the ECM also energizes all solenoids. You can use Field Service mode to test solenoid operation. Field Service mode works differently depending on the engine: With a carbureted engine running, the CHECK ENGINE LMP stops flashing code 12 and new trouble codes cannot be set. The ECM also sets ignition timing to a fixed degree of advance, which lets you check and adjust timing. You also can use the Field Service mode for a system performance check on carbureted engines. Refer to a vehicle service manual for details. For some fuel-injected engines, the instrument panel CHECK ENGINE lamp flashes rapidly when the engine is running in open loop and slowly when in closed loop. dditionally, in closed loop, the length of the lamp flash indicates whether the exhaust is rich or lean. The lamp flash is longer if the exhaust is rich Prizm ctuator Tests The 1996 and later Geo Prizm offers interactive bidirectional actuator tests. Most of the actuator tests are best performed with the key on and the engine running. The Fuel Pump and Fuel Pump Relay tests must be performed with the key and engine off. Most tests automatically display data parameters to help determine actuator or system performance, but some tests do not display parameters and require you to monitor the selected actuator. Measure the signal using a digital multimeter, or listen for activation. For most tests, scrolling up and down switches the actuator on and off. Test completion does not mean that the actuator was activated. IMPORTNT: Do not enter any actuator test while driving a vehicle on a road test, unless the specific test requires you to do so. PCM changes to ignition timing, fuel delivery, and other engine functions may affect engine operation and vehicle control. For engine testing, selecting CTUTOR TESTS displays the following menu (Figure 7-23). 62

11 INJ VOLUME >IC DUTY RTIO EGR SYSTEM FUEL PUMP RELY FUEL PUMP /C CLUTCH RELY FUEL CUT PROHIIT TE1 Figure 7-23 Complete engine actuator test menu For transmission testing, selecting CTUTOR TESTS displays the following menu (Figure 7-24). >O/D CUT SOL LOCK UP SHIFT Figure 7-24 Transmission actuator tests z To perform an EGR system test: 1. From the CTUTOR TESTS menu, select EGR SYSTEM. screen like Figure 7-25 displays. 2. Press Y. screen like Figure 7-26 displays. EFORE RUNNING TEST, ENSURE THT KEY IS ON ND ENGINE IS RUNNING PRESS Y TO CTIVTE TEST Figure 7-25 egin EGR SYSTEM test EGR SYS ON EGR TEMP( F) 97 ST TRIM 1(%) 12 ST TRIM 2(%) 0 SCROLL UP/DOWN TO TURN ON/OFF PRESS N TO ORT THE TEST Figure 7-26 EGR test 3. Raise the engine RPM to y scrolling up and down, you control the PCM command to the valve that switches sense vacuum to the EGR valve on and off. The EGR TEMP and ST TRIM parameters on the screen make it easy to determine if exhaust gas is indeed being recirculated. With EGR SYS OFF, expect low EGR TEMP. With the EGR SYS ON, the EGR TEMP should rise and the ST TRIM values should change. 4. fter testing the EGR, press N and this message displays (Figure 7-27). 63

12 Chapter 7 Geo Testing Engine, Transmission, and ntilock rake Systems EGR SYSTEM TEST HS EEN COMPLETED PRESS Y TO REPET TEST PRESS N FOR CTUTOR TEST MENU Figure 7-27 EGR test complete message z To perform a Fuel Pump test: 1. From the CTUTOR TESTS menu, select FUEL PUMP. screen like Figure 7-28 displays. 2. Press Y. EFORE RUNNING TEST, ENSURE THT KEY IS ON ND ENGINE IS RUNNING PRESS Y TO CTIVTE TEST screen like Figure 7-29 displays. Figure 7-28 egin FUEL PUMP test CTIVTING FUEL PUMP FOR 30 SECONDS IN PROGRESS PRESS N TO ORT TEST. Figure 7-29 Fuel Pump test The IN PROGRESS flashes until the end of the 30-second period. fter 30 seconds, the pump shuts off and a screen like Figure 7-30 displays. FUEL PUMP TEST HS EEN COMPLETED PRESS Y TO REPET TEST PRESS N FOR CTUTOR TEST MENU Figure 7-30 Fuel Pump test complete message 64

Isuzu. Chapter Testing Engine and Transmission Systems Engine And Transmission Code Reading Connectors and Locations

Isuzu. Chapter Testing Engine and Transmission Systems Engine And Transmission Code Reading Connectors and Locations Chapter 10 Isuzu This chapter contains information for testing Isuzu vehicles with the Asian Import Vehicle Communication Software (VCS). The following Isuzu systems may be available for testing: Engine