Brake Lamp: Testing and Inspection

STOP LAMP CIRCUIT





Diagnosis Procedure
Regarding Wiring Diagram information, [1][2]Brake Lamp.
1.CHECK STOP LAMP OPERATION 1
Check stop lamp operation.
Are all stop lamps inoperative?
YES - GO TO 2
NO�1 - LH stop lamp only, GO TO 4
NO�2 - RH stop lamp and/or high mounted stop lamp, GO TO 7
2.CHECK FUSE
1. Turn the ignition switch OFF.
2. Check fuse block J/B fuse 7 (10A) for an open.
Is the fuse open?
YES - Replace the fuse after repairing the affected circuit.
NO - GO TO 3
3.CHECK STOP LAMP SWITCH
Perform the stop lamp switch component inspection. SEE Component Inspection (Stop Lamp Switch).
Is the inspection result normal?
YES - - Repair or replace the following:
- circuit between fuse block J/B and joint connector E07.
- circuit between joint connector E07 and stop lamp switch.
- circuit between stop lamp switch and joint connector E14.
- joint connector E07.
- joint connector E14.
- ground E15.
NO - Replace stop lamp switch.
4.CHECK STOP LAMP RELAY-2
Perform the stop lamp relay-2 component inspection. .
Is the inspection result normal?
YES - GO TO 5
NO - Replace stop lamp relay-2.
5.CHECK REAR COMBINATION LAMP LH VOLTAGE CIRCUIT
1. Connect stop lamp relay-2 connector.
2. Disconnect rear combination lamp LH connector.
3. Check voltage between rear combination lamp LH connector B30 terminal 1 and ground.





Is the inspection result normal?
YES - GO TO 6
NO - Repair circuit between stop lamp relay-2 and rear combination lamp LH.
6.CHECK REAR COMBINATION LAMP LH GROUND CIRCUIT
Check continuity between rear combination lamp LH connector B30 terminal 5 and ground.





Is the inspection result normal?
YES - Replace rear combination lamp LH. Service and Repair.
NO - Repair rear combination lamp LH ground circuit.
7.CHECK STOP LAMP OPERATION 2
Check RH stop lamp and high mounted stop lamp operation.
Are both the RH stop lamp and high mounted stop lamp inoperative?
YES - GO TO 8
NO�1 - RH stop lamp only, GO TO 9
NO�2 - high mounted stop lamp only, GO TO 11
8.CHECK STOP LAMP RELAY-1
Perform the stop lamp relay-1 component inspection. SEE Component Inspection (Stop Lamp Relay).
Is the inspection result normal?
YES - - Repair or replace the following:
- circuit between stop lamp relay-1 and fuse block (J/B).
- circuit between fuse block (J/B) and joint connector B06.
- joint connector B06.
NO - Replace stop lamp relay-1.
9.CHECK REAR COMBINATION LAMP RH VOLTAGE CIRCUIT
1. Disconnect rear combination lamp RH connector.
2. Check voltage between rear combination lamp RH connector B45 terminal 1 and ground.





Is the inspection result normal?
YES - GO TO 10
NO - Repair circuit between joint connector B06 and rear combination lamp RH.
10.CHECK REAR COMBINATION LAMP RH GROUND CIRCUIT
Check continuity between rear combination lamp RH connector B45 terminal 5 and ground.





Is the inspection result normal?
YES - Replace rear combination lamp RH. Service and Repair.
NO - Repair rear combination lamp RH ground circuit.
11.CHECK HIGH MOUNTED STOP LAMP VOLTAGE CIRCUIT
1. Disconnect high mounted stop lamp connector B37 (without rear spoiler) and B40 (with rear spoiler).
2. Check voltage between high mounted stop lamp connector B37 (without rear spoiler), B40 (with rear spoiler) terminal 1 and ground.





Is the inspection result normal?
YES - GO TO 12
NO - - Repair or replace the following:
- circuit between joint connector B06 and high mounted stop lamp.
- joint connector B08.
12.CHECK HIGH MOUNTED STOP LAMP GROUND CIRCUIT
Check continuity between high mounted stop lamp connector B37 (without rear spoiler), B40 (with rear spoiler) terminal 2 and ground.





Is the inspection result normal?
YES - Replace high mounted stop lamp. Service and Repair.
NO - Repair high mounted stop lamp ground circuit.




Component Inspection (Stop Lamp Switch)
1.CHECK STOP LAMP SWITCH
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch connector.
3. Check continuity between stop lamp switch terminals.





Is the inspection result normal?
YES - Inspection End.
NO - Replace stop lamp switch.




Component Inspection (Stop Lamp Relay)

NOTE:
Stop lamp relay-1 and stop lamp relay-2 are located in the IPDM E/R.
1.CHECK STOP LAMP RELAY





1. Turn ignition switch OFF.
2. Disconnect stop lamp relay connector.
3. Apply battery voltage to stop lamp relay terminal 1 and ground to terminal 2.
4. Check continuity between stop lamp relay terminals 3 and 5.





Is the inspection result normal?
YES - Inspection End.
NO - Replace stop lamp relay.