Jeep Grand Cherokee WK. Manual — part 429
B163F-FRONT RIGHT TURN CONTROL CIRCUIT LOW (CONTINUED)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
•
With the Turn Signal activated.
•
Set Condition:
•
When the FCM detects a LOW condition.
Possible Causes
(L60) FRONT RIGHT TURN SIGNAL CONTROL CIRCUIT
FRONT CONTROL MODULE
Diagnostic Test
1.
INTERMITTENT CONDITION
Turn the ignition on.
With the Scan Tool, clear all FCM DTC’s.
Turn the Right Turn Signals on.
With the Scan Tool read the DTC information.
Does the Scan Tool read: B163F-FRONT RIGHT TURN CONTROL CIRCUIT LOW?
Yes
>> Go To 2
No
>> The condition that caused the symptom is currently not present. Inspect the related wiring for a possible
intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES - STANDARD PROCEDURE)
2.
L60 FRONT RIGHT TURN SIGNAL CONTROL CIRCUIT
Turn the ignition off.
Disconnect the FCM C2 harness connector.
Disconnect the Right Front Headlamp harness connector.
Measure the resistance between ground and the (L60) Front Turn Sig-
nal Control circuit.
Is the resistance below 5.0 ohms?
Yes
>> Repair the (L60) Front Right Turn Signal Control circuit for
a short to ground.
Perform the BODY VERIFICATION TEST - VER 1. (Refer
to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES
- STANDARD PROCEDURE)
No
>> Replace the Front Control Module in accordance with the
service information.
Perform the BODY VERIFICATION TEST - VER 1. (Refer
to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES
- STANDARD PROCEDURE)
8L - 26
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
WK
B1640-FRONT RIGHT TURN CONTROL CIRCUIT HIGH
WK
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
8L - 27
B1640-FRONT RIGHT TURN CONTROL CIRCUIT HIGH (CONTINUED)
For a complete wiring diagram Refer to Section 8W.
•
When Monitored:
Continuously
•
Set Condition:
When the Front Control Module detects a short to battery on the Control circuit.
Possible Causes
(L60) TURN SIGNAL CONTROL CIRCUIT
FRONT RIGHT TURN SIGNAL BULB
FRONT CONTROL MODULE
Diagnostic Test
1.
TEST FOR INTERMITTENT CONDITION
Turn the ignition on.
Clear all FCM DTC’s
Turn the Right Turn Signal on.
With the scan tool, read DTC’s.
Does the scan tool read: B1640-FRONT RIGHT TURN CONTROL CIRCUIT HIGH?
Yes
>> Go To 2
No
>> The conditions that caused this code to set are not present at this time. Using the wiring diagram/sche-
matic as a guide, inspect the wiring and connectors.
Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES - STANDARD PROCEDURE)
2.
FRONT RIGHT TURN SIGNAL BULB
Turn the ignition off.
Inspect the Front Right Turn Signal Bulb Assembly.
Is the inoperative bulb OK?
Yes
>> Go To 3
No
>> Replace the Inoperative bulb in accordance with the service information.
Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CON-
TROL MODULES - STANDARD PROCEDURE)
8L - 28
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
WK
B1640-FRONT RIGHT TURN CONTROL CIRCUIT HIGH (CONTINUED)
3.
L60 RIGHT TURN SIGNAL CONTROL CIRCUIT
Turn the ignition off.
Disconnect the FCM C2 connector.
Measure the resistance of the (L60) Front Right Turn Signal Control
circuit.
Is the resistance above 5.0 ohms?
No
>> Repair the (L60) Turn Signal Control circuit for an open.
Perform the BODY VERIFICATION TEST - VER 1. (Refer
to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES
- STANDARD PROCEDURE)
Yes
>> Replace the Front Control Module.
Perform the BODY VERIFICATION TEST - VER 1. (Refer
to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES
- STANDARD PROCEDURE)
WK
LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS
8L - 29
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