Tail Lamp Signal Circuit

TAIL LAMP SIGNAL CIRCUIT





Description
Total illumination control unit inputs tail lamp signal from IPDM E/R.




Component Function Check

NOTE:
Check the tail lamp circuit if the tail lamp is not turned ON. Tail Lamp Circuit.
1.CHECK TAIL LAMP SIGNAL INPUT WITH CONSULT-III
CONSULT-III DATA MONITOR
1. Turn ignition switch ON.
2. Select "TAIL LAMP SIGNAL" of TOTAL ILLUM C/U data monitor item.
3. While operating the lighting switch, check the monitor status.





Is the measurement value normal?
YES - Tail lamp signal circuit is normal.
NO - SEE Diagnosis Procedure.




Diagnosis Procedure
1.CHECK TAIL LAMP INPUT SIGNAL
CONSULT-III ACTIVE TEST
1. Turn ignition switch ON.
2. Select "EXTERNAL LAMPS" of IPDM E/R active test item.
3. While operating the test item, check the voltage between the total illumination control unit and ground.





Is the measurement value normal?
YES - Replace the total illumination control unit.
NO - GO TO 2.
2.CHECK TAIL LAMP SIGNAL CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect the IPDM E/R harness connector and total illumination harness connector.
3. Check continuity between the IPDM E/R harness connector and total illumination harness connector.





Does continuity exist?
YES - GO TO 3.
NO - Repair the harnesses or connectors.
3.CHECK TAIL LAMP SIGNAL CIRCUIT FOR SHORT
Check continuity between the total illumination control unit and ground.





Does continuity exist?
YES - Repair the harnesses or connectors.
NO - Replace the IPDM E/R.