Symptom:
*REAR AXLE LOCK INDICATOR REMAINS FLASHING
POSSIBLE CAUSES
CHECKING OPERATION
INTERMITTENT CONDITION
OPEN FUSE IN PDC
FUSED B(+) CIRCUIT OPEN TO THE REAR LOCKER RELAY
REAR LOCKER RELAY
REAR LOCKER RELAY OUTPUT CIRCUIT OPEN
REAR LOCKER PUMP GROUND CIRCUIT OPEN
REAR LOCKER PUMP
REAR LOCKER INDICATOR SWITCH SENSE CIRCUIT OPEN
REAR LOCKER INDCATOR SWITCH GROUND CIRCUIT OPEN
MECHANICAL FAULT EXISTS
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
Ensure Transfer Case is in 4
9
LOW
9
range.
Vehicle speed is less than 16km/h (10 mph).
Depress the Axle Lock Switch once.
Does the Rear Axle Lock indicator remain flashing?
All
Yes
→
No
→
The condition is not present at this time. Monitor DRBIII
t
parameters while wiggling the related wiring harness. Refer to
any Technical Service Bulletins(TSB) that may apply. Visually
inspect the related wiring harness and connector terminals.
Perform BODY VERIFICATION TEST - VER 1.
2
Inspect Fuse 24 in the PDC.
Is the Fuse open, missing, or loose?
All
Yes
→
Replace the open or missing fuse. If the fuse is open make sure to
check for a short to ground in the Fused B(+) circuit between the
fuse and the relay.
Perform BODY VERIFICATION TEST - VER 1.
No
→
3
Disconnect the Rear Locker Relay.
Measure the voltage of the Fused B(+) circuit in the Rear Locker Relay PDC
connector.
Is the voltage above 10 volts?
All
Yes
→
No
→
Repair the Fused B(+)circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
42
BRAKES (CAB)
Summary of Contents for Wrangler TJ 2003
Page 4: ...NOTES iv...
Page 13: ...7 0 DIAGNOSTIC INFORMATION AND PROCEDURES 9...
Page 52: ...NOTES 48...
Page 56: ...NOTES 52...
Page 61: ...C O N N E C T O R P I N O U T S 57 CONNECTOR PINOUTS...
Page 64: ...NOTES 60...
Page 66: ...10 2 AXLE LOCK S C H E M A T I C D I A G R A M S 62 SCHEMATIC DIAGRAMS...