FCM-Park Lamp Relay Output Circuit Low

FCM-PARK LAMP RELAY OUTPUT CIRCUIT LOW

FCM - Park Lamp Relay Output Circuit Low:

WHEN MONITORED
With the ignition on

SET CONDITION
The FCM detects a LOW condition.

POSSIBLE CAUSES
- Park lamp relay
- Power distribution center
- Front control module

1. INTERMITTENT CONDITION




Turn the ignition on.
With the DRBIII(R), clear all FCM DTC's.
Turn the Park Lamps on.
With the DRBIII(R), read the DTC information.

Q: Does the DRBIII(R) read: Park Lamp Relay Output Circuit Low?

YES: Go To 2
NO: The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

2. PARK LAMP RELAY




Turn the ignition off.
Install a know good relay in place of the Park Lamp Relay.
Turn the ignition on.
Actuate the Park Lamps.

Q: Do the Park Lamps operate normally?

YES: Go To 3
NO: Replace the Park Lamp Relay. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

3. FRONT CONTROL MODULE
Turn the ignition off
Remove the Park Lamp Relay.
Remove the FCM from the IPM.
Measure the resistance between ground and the Park Lamp Relay control circuit in the IPM.

Q: Is the resistance below 5.0 ohms?

YES: Replace the Power Distribution Center(PDC). Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the Front Control Module. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test