Jeep 1997 Grand Cherokee Service Manual page 494

8L - 4 LAMPS
DIAGNOSIS AND TESTING (Continued)
DAYTIME RUNNING LAMP DIAGNOSIS
CONDITION
DAYTIME RUNNING LAMPS DO
NOT WORK
DAYTIME RUNNING LAMP DIAGNOSIS
POSSIBLE CAUSES
1. Poor connection at DRL module.
2. Parking brake engaged.
3. Parking brake circuit shorted to
ground.
4. Headlamp circuit shorted to
ground.
5. Defective DRL module.
CORRECTION
1. Secure connector on DRL
module.
2. Disengage parking brake.
3. Check voltage on pin 3 of
module, refer to Group 8W.
4. Check L3 circuit, refer to Group
8W.
5. Replace DRL module.
ZG