Jeep Grand Cherokee WK. Manual

B162B-LEFT LOW BEAM CONTROL CIRCUIT LOW (CONTINUED)

For a complete wiring diagram Refer to Section 8W.

•

When Monitored:

•

With the Headlamps activated.

•

Set Condition:

•

When the FCM detects a LOW condition.

Possible Causes

(L43) LEFT LOW BEAM CONTROL CIRCUIT SHORT TO GROUND

FRONT CONTROL MODULE

Diagnostic Test

INTERMITTENT CONDITION

Turn the ignition on.

With the Scan Tool, clear all FCM DTC’s.

Turn the Headlamps on.

With the Scan Tool read the DTC information.

Does the Scan Tool read: B162B-LEFT LOW BEAM CONTROL CIRCUIT LOW?

Yes

>> Go To 2

>> 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)

(L43) LEFT LOW BEAM CONTROL CIRCUIT SHORT TO GROUND

Turn the ignition off.

Disconnect the FCM C2 harness connector.

Disconnect the Left Headlamp harness connector.

Measure the resistance between ground and the (L43) Left Low Beam
Control circuit.

Is the resistance below 5.0 ohms?

Yes

>> Repair the (L43) Left Low Beam Control circuit for a short

to ground condition.

Perform the BODY VERIFICATION TEST - VER 1. (Refer
to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES
- STANDARD PROCEDURE)

>> Replace the Front Control Module (FCM) in accordance

with the service information.

Perform the BODY VERIFICATION TEST - VER 1. (Refer
to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES
- STANDARD PROCEDURE)

8L - 4

LAMPS/LIGHTING - EXTERIOR - ELECTRICAL DIAGNOSTICS

Jeep Grand Cherokee WK. Manual - part 423