Diagnostic Test

With the scan tool, read the active DTC's.

Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds.

With the scan tool, read the active DTC's.

Does the scan tool display this DTC as active? 

Yes 

1. Go To step  2).

No 

1. If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.

Turn the ignition off.

Install a substitute relay in place of the original Accessory Delay Relay.

Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 90 seconds.

With the scan tool, read the active FCM DTC's.

Does the scan tool display this DTC as active? 

Yes 

1. Go To step  3).

No 

1. Replace the original Accessory Delay Relay.
2. Perform BODY VERIFICATION TEST - VER 1 . (Refer to BODY VERIFICATION TEST - VER 1) .

Fig 1: Checking Accessory Delay Relay Control Circuit

Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Remove the FCM from the Power Distribution Module.

Remove the Accessory delay Relay from the Rear Power Distribution Module.

Measure the resistance of the Accessory Delay Relay Control circuit from the FCM-PDM connector to the relay connector.

Is the resistance below 10.0 ohms? 

No 

1. Repair the Accessory Delay Relay Control circuit for an open.
2. Perform BODY VERIFICATION TEST - VER 1 . (Refer to BODY VERIFICATION TEST - VER 1) .

Yes 

1. Inspect the wiring and connectors for damage or shorted circuits. If OK, replace and program the Front Control Module in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 . (Refer to BODY VERIFICATION TEST - VER 1) .