A Symptoms - ESC

SYMPTOMS - ELECTRONIC SUSPENSION CONTROL

IMPORTANT: The following steps must be completed before using the symptom tables.
1. Perform the Diagnostic System Check - Electronic Suspension Control before using the symptom table in order to verify that all of the following are true:
- There are no DTCs set.
- The control modules can communicate via the serial data link.
2. Review the system operation in order to familiarize yourself with the system functions. Refer to Electronic Suspension Control Description and Operation.

Visual/Physical Inspection
- Inspect for aftermarket devices which could affect the operation of the ESC System. Refer to Checking Aftermarket Accessories in Diagnostic Aids.
- Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
- Inspect the connectors to be properly seated and free of corrosion.

Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Check 38 way connector C405 for intermittents. Refer to Diagnostic Aids For Circuit Testing and Wiring Repair procedures.

Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
- Service Ride Control Indicator Always On
- Service Ride Control Indicator Inoperative