Diagnosis Procedure
Controls the following interior room lamps (ground side) by pulse width modulated signal
- Door mirrors (with puddle lamps) (if equipped)
- Front room/map lamp assembly (with front roof console) (if equipped)
- Front room/map lamp assembly (without front roof console) (if equipped)
- Personal lamp
- CHECK INTERIOR ROOM LAMP CONTROL OUTPUT
CONSULT
- Switch the front room/map lamp assembly and personal lamp switch to DOOR.
- Turn ignition switch ON.
- Select "INT LAMP" in "Active Test" mode of "BCM".
- While operating the test item, check voltage between BCM connector M81 terminal 136 and ground.
BCM
(-)
Test item
Voltage
(Approx.)
(+)
Connector
Terminal
M81
136
Ground
INT LAMP
On
0V
Off
Battery voltage
Is the inspection result normal?
YES
Interior room lamp control circuit is operating normally.
Fixed ON
GO TO 3 .
Fixed OFF
GO TO 2.
- CHECK INTERIOR ROOM LAMP CONTROL OPEN CIRCUIT
- Turn ignition switch OFF.
- Disconnect BCM connector M81, door mirror connectors D4 and D107 (with puddle lamps) (if equipped), front room/map lamp assembly connector R13 (with front roof console) or front room/map lamp assembly connector R14 (without front roof console) and personal lamp connector R11.
- Check continuity between BCM connector M81 terminal 136 and door mirror connectors D4 and D107 terminal 22 (with puddle lamps) (if equipped), front room/map lamp assembly connector R13 terminal 4 (with front roof console) or front room/map lamp assembly connector R14 terminal 3 (without front roof console) and personal lamp connector R11 terminal 3.
BCM
Each interior room lamp
Continuity
Connector
Terminal
Connector
Terminal
M81
136
Door mirror LH (puddle lamps)
(if equipped)
D4
22
Yes
Door mirror RH (puddle lamps)
(if equipped)
D107
22
Front room/map lamp assembly (with front roof console)
R13
4
Front room/map lamp assembly (without front roof console)
R14
3
Personal lamp
R11
3
Is the inspection result normal?
YES
Check interior room lamps for an open circuit. If OK, replace BCM. Refer to Removal and Installation . If open circuit is found, replace interior room lamp. Refer to Removal and Installation .
NO
Repair the harness or connectors.
- CHECK INTERIOR ROOM LAMP CONTROL SHORT CIRCUIT
- Turn ignition switch OFF.
- Disconnect BCM connector M81, door mirror connectors D4 and D107 (with puddle lamps) (if equipped), front room/map lamp assembly connector R13 (with front roof console) or front room/map lamp assembly connector R14 (without front roof console) and personal lamp connector R11.
- Check continuity between BCM connector M81 terminal 136 and ground.
BCM
(-)
Continuity
Connector
Terminal
M81
136
Ground
No
Is the inspection result normal?
YES
Check interior room lamps for a short circuit. If OK, replace BCM. Refer to Removal and Installation . If short is found, replace interior room lamp. Refer to Removal and Installation .
NO
Repair the harness or connectors.