GHTI GHTI SYSTEM 63 Taillight Relay Circuit DESCRIPTION The headlight dimmer switch sends a signal to the main body ECU. WIRI DIAGRAM Main Body ECU TAIL To Battery TAIL TRLY Outer Rear View Mirror Illumination Light LH Outer Rear View Mirror Illumination Light RH Taillight LH Taillight RH License Plate Light Front Turn Signal Light LH Front Turn Signal Light RH B389E0 INSPECTION PROCEDURE PERFORM ACTIVE TEST BY INTELGENT TESTER (ILLUMI OUTPUT) BODY (a) (b) (d) Connect the intelligent tester with CAN VIM to the DLC3. Turn the ignition switch ON. Turn the intelligent tester main switch on. Select the item below in the ACTIVE TEST and then check the relay operation. Item Test Details/ Display (Range) Diagnostic Note ILLUMI OUTPUT Illuminated Entry System ON/OFF -
64 GHTI GHTI SYSTEM Result Result No illumination lights illuminate Front turn signal light does not illuminate Taillight or license plate light does not illuminate Outer rear view mirror illumination light does not illuminate Proceed to A B C D E B C D E Go to step Go to step 5 Go to step 7 Go to step 0 A PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE INSPECT FUSE (TAIL FUSE) (a) Remove the TAIL fuse from the main body ECU. (b) Measure the resistance. resistance: Below Ω Reinstall the TAIL fuse. REPLACE FUSE 3 INSPECT TAIL RELAY (a) Remove the TAIL relay from the main body ECU. (b) Measure the resistance. resistance Battery 3-5 0 kω or higher 3-5 Reinstall the TAIL relay. Below Ω (When battery voltage is applied between terminals and ) REPLACE TAIL RELAY Ohmmeter E09078E06
GHTI GHTI SYSTEM 65 4 CHECK HARNESS AND (BATTERY - TAIL RELAY) Main Body ECU (a) Remove the TAIL relay from the main body ECU. (b) Measure the resistance. resistance Condition - Body ground Always to 4 V 5 - Body ground Always to 4 V Reinstall the TAIL relay. B3893E0 REPLACE MAIN BODY ECU 5 INSPECT BULB (FRONT TURN SIGNAL GHT) Front Turn Signal Light* (a) Remove the front turn signal lights. front turn signal light illuminates. Positive battery - Terminal Negative battery - Terminal Front turn signal light illuminates *: LH or RH B36088E0 Reinstall the front turn signal lights. REPLACE BULB
66 GHTI GHTI SYSTEM 6 CHECK HARNESS AND (MAIN BODY ECU - FRONT TURN SIGNAL GHT) Wire Harness Side: Front Turn Signal Light Connector * A6 * A0 *: LH *: RH Main Body ECU Connector B (a) Disconnect the A6 and A0 front turn signal light connectors. (b) Disconnect the B main body ECU connector. Measure the resistance. resistance (d) (e) A6- - B-9 Below Ω A0- - B- Below Ω A6- or B-9 - Body ground 0 kω or higher A0- or B- - Body ground 0 kω or higher Reconnect the front turn signal light connectors. Reconnect the main body ECU connector. 3 4 5 6 7 8 9 0 3 B389E0 (FRONT TURN SIGNAL GHT - BODY GROUND) 7 INSPECT BULB (TAILGHT) Taillight* (a) Remove the taillights. taillight illuminates. 3 Positive battery - Terminal Negative battery - Terminal Taillight illuminates *: LH or RH Reinstall the taillights. B4038E0 REPLACE BULB
GHTI GHTI SYSTEM 67 8 INSPECT BULB (CENSE PLATE GHT) License Plate Light (a) Remove the license plate light. license plate light illuminates. Positive battery - Terminal Negative battery - Terminal Licence plate light illuminates Reinstall the license plate light. B3894E0 REPLACE BULB 9 CHECK HARNESS AND (MAIN BODY ECU - TAILGHT, CENSE PLATE GHT) Wire Harness Side: Taillight Connector L L4 * * 3 *: LH *: RH License Plate Light Connector (a) Disconnect the L and L4 taillight connectors. (b) Disconnect the S license plate light connector. Disconnect the F main body ECU connector. (d) Measure the resistance. resistance F-3 - L- Below Ω F-3 - L4- Below Ω F-3 - S- Below Ω F-3 or L- or Body ground 0 kω or higher F-3 or L4- or Body ground 0 kω or higher F-3 or S- or Body ground 0 kω or higher S (e) (f) (g) Reconnect the taillight connectors. Reconnect the license plate light connector. Reconnect the main body ECU connector. Main Body ECU Connector F 6 5 8 7 4 3 6 5 4 3 0 9 B3895E0 (TAILGHT, CENSE PLATE GHT - BODY GROUND)
68 GHTI GHTI SYSTEM 0 INSPECT BULB (OUTER REAR VIEW MIRROR ILLUMINATION GHT) Outer Rear View Mirror Assembly* (a) Remove the outer rear view mirror assembly. outer rear view mirror illumination light illuminates. 5 4 3 Positive battery - Terminal Negative battery - Terminal Outer rear view mirror illumination light illuminates *: LH and RH Reinstall the outer rear view mirror assembly. B3896E0 REPLACE BULB CHECK HARNESS AND (MAIN BODY ECU - OUTER REAR VIEW MIRROR ILLUMINATION GHT) Wire Harness Side: Outer Rear View Mirror Assembly Connector H G * * 3 4 5 Main Body ECU Connector L *: LH *: RH (a) Disconnect the H and G outer rear view mirror assembly connectors. (b) Disconnect the L main body ECU connector. Measure the resistance. resistance (d) (e) L-5 - H- Below Ω L-5 - G- Below Ω Reconnect the outer rear view mirror assembly connector. Reconnect the main body ECU connector. 3 4 5 6 3 4 5 6 7 8 7 8 9 0 9 0 3 4 B3897E0 (OUTER REAR VIEW MIRROR ILLUMINATION GHT - BODY GROUND)