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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 51 (Body Control Module (BCM) - DTCS B10B3-14 To B182C-13) >> Diagnosis And Testing >> B1632-15-Left High Beam Control - Circuit Short To Battery Or Open >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2014 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
  1. INTERMITTENT CONDITION 
    1. Turn the ignition on.
    2. With the scan tool, clear all DTCs.
    3. Turn the High Beam Headlamps on.
    4. With the scan tool, read DTCs.

      Does the scan tool display DTC: B1632-15-LEFT HIGH BEAM CONTROL - CIRCUIT SHORT TO BATTERY OR OPEN?

      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 .
  2. CHECK THE (L33) LEFT HIGH BEAM DRIVER CIRCUIT FOR A SHORT TO VOLTAGE IN THE HARNESS 
    Fig 1: Checking Left High Beam Driver Circuit For A Short To Voltage In Harness
    GC0150696Courtesy of CHRYSLER GROUP, LLC
    1. Turn the Headlamps off.
    2. Turn the ignition off.
    3. Disconnect the Left Front Lamp Assembly C2 harness connector.
    4. Disconnect the BCM D harness connector.
    5. Turn the ignition on.
    6. Measure the voltage between ground and the (L33) Left High Beam Driver circuit.

      Is there any voltage present?

      Yes 

      • Repair the short to voltage in the (L33) Left High Beam Driver circuit.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  3
  3. CHECK THE (L33) LEFT HIGH BEAM DRIVER CIRCUIT FOR AN OPEN IN THE HARNESS 
    Fig 2: Checking Left High Beam Driver Circuit For An Open In Harness
    GC0150697Courtesy of CHRYSLER GROUP, LLC
    1. Turn the ignition off.
    2. Measure the resistance of the (L33) Left High Beam Driver circuit between the Left Front Lamp Assembly C2 harness connector and the BCM D harness connector.

      Is the resistance below 5.0 Ohms?

      Yes 

      • Go To  4

      No 

      • Repair the open in the (L33) Left High Beam Driver circuit.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  4. CHECK THE (Z901) GROUND CIRCUIT FOR AN OPEN IN THE HARNESS 
    Fig 3: Checking Ground Circuit For An Open In Harness
    GC0150698Courtesy of CHRYSLER GROUP, LLC
    1. Using a 12-volt test light connected to 12-volts, check the (Z901) Ground circuit at the Left Front Lamp Assembly C2 harness connector.

      Does the test light illuminate brightly?

      Yes 

      • Go To  5

      No 

      • Repair the open in the (Z901) Ground circuit.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  5. CHECK THE BCM FOR CORRECT OPERATION 
    Fig 4: Checking BCM For Correct Operation
    GC0150700Courtesy of CHRYSLER GROUP, LLC
    1. Reconnect the BCM D harness connector.
    2. Connect a 12-volt test light between the (L33) Left High Beam Driver circuit and (Z901) Ground circuit in the Left Front Lamp Assembly C2 harness connector.
    3. Turn the ignition on.
    4. Turn the High Beam Headlamps on.

      Does the test light illuminate brightly?

      Yes 

      No