Test J: DTCs B29AF, B29B0, B29B1 and B29B2 - Fire Suppression Manual Switch Failure

PINPOINT TEST J: DTCs B29AF, B29B0, B29B1 AND B29B2 - FIRE SUPPRESSION MANUAL SWITCH FAILURE

J1-J3:

J3-J5:

J5-J7:

J7-J9:

J10-J11:

J12-J14:

Normal Operation
The fire suppression module checks the fire suppression manual switch circuits for faults. If the fire suppression module detects an open or a short to ground on circuit 2315 (BK/PK), it stores DTC B29AF in memory and illuminates the fire suppression system indicator. If the fire suppression module detects a short to voltage on circuit 2315 (BK/PK), it stores DTC B29B0 in memory and illuminates the fire suppression system indicator. If the fire suppression module detects an open or a short to voltage on circuit 2314 (LB/BK), it stores DTC B29B1 in memory and illuminates the fire suppression system indicator. If the fire suppression module detects a short to ground on circuit 2314 (LB/BK), it stores DTC B29B2 in memory and illuminates the fire suppression system indicator.

Possible Causes
- Fuse
- Circuit 2314 (LB/BK) open, short to ground or voltage
- Circuit 2315 (BK/PK) open, short to ground or voltage
- Fire suppression manual switch
- Fire suppression manual switch wiring harness
- Fire suppression module