Diagnostic Test

WARNING: This page is about a different car, the 2016 Jeep Wrangler and 2015 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.

INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all DTCs.
3. Turn the Headlamps on.
4. With the scan tool, read DTCs.
  Does the scan tool display DTC: B162B-LEFT LOW BEAM CONTROL CIRCUIT LOW?
  
  Yes
  - Go To 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. Refer to STANDARD PROCEDURE .
ATTEMPT TO SET THE OPPOSITE DTC
1. Turn the ignition off.
2. Disconnect the Left Headlamp Lamp harness connector.
3. Turn the ignition on.
4. With the scan tool, read DTCs.
  Does the scan tool display DTC: B162C-LEFT LOW BEAM CONTROL CIRCUIT HIGH?
  
  Yes
  - Replace the Left Low Beam Bulb in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Go To 3
CHECK THE (L43) LEFT LOW BEAM DRIVER CIRCUIT FOR A SHORT TO GROUND

Fig 1: Checking Left Low Beam Driver Circuit For A Short To Ground
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the TIPM C3 harness connector.
3. Measure the resistance between ground and the (L43) Left Low Beam Driver circuit.
  Is the resistance above 10k Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the short to ground in the (L43) Left Low Beam Driver circuit.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK THE (L43) LEFT LOW BEAM DRIVER CIRCUIT FOR A SHORT TO THE (L911) LEFT HEADLAMP RETURN SIGNAL CIRCUIT

Fig 2: Checking Left Low Beam Driver Circuit For A Short To Left Headlamp Return Signal Circuit
Courtesy of CHRYSLER GROUP, LLC
1. Measure the resistance between the (L43) Left Low Beam Driver circuit and the (L911) Left Headlamp Return Signal circuit.
  Is the resistance above 10k Ohms?
  
  Yes
  - Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repair the short between the (L43) Left Low Beam Driver circuit and the (L911) Left Headlamp Return Signal circuit.
  - Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .