Diesel Data: Automotive Repair

Troubleshooting Hints

PERFORM BEFORE BEGINNING SYSTEM DIAGNOSIS
1. Check HORN fuse in Right Front Underhood Relay Center.
2. Before component replacement, check for poor terminal contact at component and related harness connectors.
3. Check for proper installation of aftermarket electronic equipment which may affect the integrity of other systems. (Refer to General Troubleshooting Procedures.) Diagnostic Aids