Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSJEEP2010GRAND CHEROKEE LIMITED, 5.7 T, 4WDREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMS(FRONT CONTROL MODULE (FCM) - ELECTRICAL DIAGNOSTICS)DTC TROUBLESHOOTINGB162C-LEFT LOW BEAM CONTROL CIRCUIT HIGHDIAGNOSTIC TEST
2010 Jeep Grand Cherokee Limited, 5.7 T, 4WD
Diagnostic Test
2010 Jeep Grand Cherokee Limited, 5.7 T, 4WDSECTION Diagnostic Test
- INTERMITTENT CONDITION
- Turn the ignition on.
- With the scan tool, clear all FCM DTCs.
- Turn the Headlamps on.
- With the scan tool, read the DTC information.
Does the scan tool display B162C-LEFT LOW BEAM CONTROL CIRCUIT HIGH?
Yes
- Go to step 2
No
- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
- LEFT LOW BEAM BULB
- Turn the ignition off.
- Inspect the Left Low Beam Bulb Assembly.
Is the inoperative bulb OK?
Yes
- Go to step 3
No
- Replace the inoperative bulb in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
- (L43) LEFT LOW BEAM CONTROL CIRCUIT OPEN
- Turn the ignition off.
- Disconnect the FCM C2 harness connector.
- Measure the resistance of the (L43) Left Low Beam Control circuit.
Is the resistance above 5.0 Ohms?
Yes
- Repair the open in the (L43) Left Low Beam Control circuit.
- Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
No
- Replace the FCM in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.