Test C: The Interior Lamps Stay on Continuously

PINPOINT TEST C: THE INTERIOR LAMPS STAY ON CONTINUOUSLY

C1-C5:

C5-C6:

C7-C11:

C12-C16:

C16-C20:

C20-C22:

C22-C24:

C25-C27:

Normal Operation
The interior lighting feature provides interior lighting whenever a door is ajar. The interior lamps are controlled through the FEM. The FEM provides the ground circuit for the front dome/map lamps, rear grab handle lamps, RH and LH footwell lamps and the RH and LH puddle lamps through common circuit 31S-LC3 (BK/BU). Power for the interior lamps is supplied through common circuit 29S-LB2 (OG/BU) from switched system power (SSP) relay 3. The LH and RH dome/map lamps and LH and RH grab handle lamps share a common power supply splice from circuit 29S-LB2 (OG/BU) and a common ground circuit splice to circuit 9-LB1 (BN). The LH and RH puddle lamps and LH and RH footwell lamps are supplied power from circuit 29S-LB2 (OG/BU) through the central junction box (CJB). All interior lamp ground circuits connect at the auxiliary junction box and combine into one common ground circuit 29S-LC3 (OG).

Possible Causes
- Driver door ajar switch
- Passenger door ajar switch
- LH rear passenger door ajar switch
- RH rear passenger door ajar switch
- Map lamp switches
- Rear grab handle lamp switches
- FEM
- REM
- Circuit 31-AA58 (BK) open
- Circuit 31S-GL46 (BK/YE) open
- Circuit 31S-GL47 (BK/BU) open
- Circuit 31S-GL12 (BK/OG) short to ground
- Circuit 31S-GL19 (BK/GN) short to ground
- Circuit 31S-LC3 (BK/BU) short to ground
- Circuit 9-LC34 (BN) short to ground
- Circuit 9-LB1 (BN) short to ground