P0381
P0381-WAIT TO START LAMP INOPERATIVEWHEN MONITORED
Ignition on.
SET CONDITION
The cluster sends a signal to the ECM that it has detected a failed wait to start lamp.
POSSIBLE CAUSES
- Fused ignition switch output circuit open
- Wait-to-start light bulb
- Wiring/connector problem
- ECM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.
Diagnostic Test
1. WAIT-TO-START LAMP DOES NOT COME ON
Turn the ignition off.
While watching the wait-to-start lamp, turn the ignition key on.
Q: Did the wait-to-start lamp light?
YES: Go To 2
NO: Go To 3
2. WAIT-TO-START LAMP STAYS ON ALL THE TIME
Turn the ignition off.
While watching the wait-to-start lamp, turn the ignition key on.
Q: Does the wait-to-start lamp stay on all the time?
YES: Go To 3
NO: Wait-to-start Lamp operating normally. Test passed. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Powertrain Verification Test - Ver 1
3. FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
Turn the ignition off.
Remove the cluster.
NOTE: Check connectors - Clean/repair as necessary.
Turn the ignition on.
Using a 12-Volt test Light, check the Fused Ignition Switch Run/Start circuit.
Q: Is the light illuminated and bright?
YES: Go To 4
NO: Repair the open fused Ignition Switch Output circuit. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Powertrain Verification Test - Ver 1
4. WAIT-TO-START LIGHT BULB
Remove and inspect the Wait-to-Start Bulb.
Q: Is the Bulb Ok?
YES: Test complete.
NO: Replace the Wait-to-Start Bulb. Perform the POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). Powertrain Verification Test - Ver 1