Jeep Wrangler TJ. Manual — part 62
TEST
ACTION
APPLICABILITY
4
Measure the resistance of the Front Locker Relay Output circuit between the PDC
connector and the Front Locker Pump connector.
Is the resistance above 5.0 ohms?
All
Yes
→ Repair the Front Locker Relay Output circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 5
5
Turn the ignition off.
Disconnect the Front Locker Pump harness connector.
Measure the resistance between ground and the Front Locker Pump Ground circuit.
Is the resistance above 5.0 ohms?
All
Yes
→ Repair the Front Locker Pump Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 6
6
Turn the ignition on.
Ensure Transfer Case is in 4
9LOW9 range.
Depress the Axle Lock Switch once.
Did the Front Locker Pump operate?
All
Yes
→ Go To 7
No
→ Refer to Differential/Driveline for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
7
Turn the ignition off.
Disconnect the Instrument Cluster C2 harness connector.
Disconnect the Front Locker Indicator Switch harness connector.
Measure the resistance of the Front Locker Indicator Switch Sense circuit between
the Instrument Cluster C2 connector and the Front Locker Indicator Switch
connector.
Is the resistance above 5.0 ohms?
All
Yes
→ Repair the Front Locker Indicator Switch Sense circuit for an
open.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 8
8
Turn the ignition off.
Disconnect the Front Locker Indicator Switch harness connector.
Measure the resistance between ground and the Front Locker Indicator Switch
Ground circuit.
Is the resistance above 5.0 ohms?
All
Yes
→ Repair the Front Locker Indicator Switch Ground circuit for an
open.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Refer to Differential/Driveline information for the related symp-
tom(s).
Perform BODY VERIFICATION TEST - VER 1.
39
BRAKES (CAB)
*FRONT AXLE LOCK INDICATOR REMAINS FLASHING —
Continued
Symptom List:
*NO RESPONSE FROM CONTROLLER ANTILOCK BRAKE
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE PCM
CHECK FUSE #7 IN FUSE BLOCK
OPEN GROUND CIRCUITS
OPEN FUSED IGNITION SWITCH OUTPUT CIRCUIT
SCI TRANSMIT CIRCUIT OPEN
CONTROLLER ANTILOCK BRAKE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB attempt to communicate with the PCM.
Was the DRB able to communicate with the PCM?
All
Yes
→ Go To 2
No
→ Refer to symptom list for problems related to No Response From
PCM.
Perform ABS VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Remove and inspect fuse #7 in the Fuse Block.
Is the fuse open?
All
Yes
→ Refer to the wiring diagrams located in the service information to
help isolate a possible short to ground.
Perform ABS VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition off.
Disconnect the CAB harness connector.
Using a 12-volt test light connected to 12-volts, probe each ground circuit.
Is the test light illuminated for each circuit?
All
Yes
→ Go To 4
No
→ Repair the ground circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
4
Turn the ignition off.
NOTE: Ensure fuse #7 is installed in the Fuse Block.
Disconnect the CAB harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Fused Ignition Switch
Output circuit.
Is the test light illuminated?
All
Yes
→ Go To 5
No
→ Repair the Fused Ignition Switch Output circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
40
BRAKES (CAB)
TEST
ACTION
APPLICABILITY
5
Turn the ignition off.
Disconnect the CAB harness connector.
Measure the resistance of the SCI Transmit circuit between the CAB connector and
the DLC.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 6
No
→ Repair the SCI Transmit circuit for an open.
Perform ABS VERIFICATION TEST - VER 1.
6
If there are no possible causes remaining, view repair.
All
Repair
Replace the Controller Antilock Brake in accordance with the
Service Information.
Perform ABS VERIFICATION TEST - VER 1.
41
BRAKES (CAB)
*NO RESPONSE FROM CONTROLLER ANTILOCK BRAKE —
Continued
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
9LOW9 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
→ Go To 2
No
→ The condition is not present at this time. Monitor DRBIIIt
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
→ Go To 3
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
→ Go To 4
No
→ Repair the Fused B(+)circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
42
BRAKES (CAB)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст