Symptom:
*BRAKE SHIFT INTERLOCK OUTPUT OPEN
POSSIBLE CAUSES
INTERMITTENT WIRING AND CONNECTORS
BRAKE SHIFT INTERLOCK CONTROL CIRCUIT OPEN
BRAKE SHIFT INTERLOCK FEED CIRCUIT OPEN
BRAKE SHIFT INTERLOCK SOLENOID
FRONT CONTROL MODULE
TEST ACTION APPLICABILITY
1 Ignition on, engine not running.
With the DRBIIIt, record and erase DTC's.
Turn the ignition off to the lock position.
Turn the ignition on.
With the DRBIIIt, read DTCs.
Does the DRBIIItdisplay BRAKE SHIFT INTERLOCK OUTPUT OPEN?All
Ye s®Go To 2
No®Go To 8
2 Turn the ignition off to the lock position.
Disconnect the Brake Shift Interlock harness connector.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Using a 12-volt test light connected to B+, check the Brake Shift Interlock Control
circuit in the Brake Shift Interlock harness connector.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Does the test light illuminate brightly?All
Ye s®Go To 3
No®Go To 6
3 Turn the ignition off to the lock position.
Disconnect the Brake Shift Interlock harness connector.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Using a 12-volt test light connected to ground, check the Brake Shift Interlock Feed
circuit in the Brake Shift Interlock harness connector.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Does the test light illuminate brightly?All
Ye s®Go To 4
No®Go To 5
4 If there are no possible causes remaining, view repair. All
Repair
Replace the Brake Shift Interlock Solenoid in accordance with the
Service Information.
146
TRANSMISSION
