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Home >> Chrysler >> 2006 >> PT Cruiser Base, 2D Convertible, Standard >> Repair and Diagnosis >> Electrical >> Gauges >> Instrument Cluster - Electrical Diagnostics >> Electrical Diagnostics >> DTC Troubleshooting >> B1612-Panel Illumination Control Circuit >> Diagnostic Test

Diagnostic Test

  1. 1)  CHECK FOR AN ACTIVE DTC 

    Turn the ignition on.

    With the scan tool, record and erase DTCs.

    Activate the Panel Illumination.

    Wait 30 seconds.

    With the scan tool, read DTCs.

    Does the scan tool display: B1612-PANEL ILLUMINATION CONTROL CIRCUIT? 

    Yes 

    1. Go To  2).

    No 

    1. The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chaffed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
    2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .
  2. 2)  CHECK THE CLOCK MODULE FOR A SHORT TO GROUND 
    Fig 1: Clock Module Harness Connector
    GC0043582Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the Clock Module harness connector.

    Turn the ignition on.

    Activate the Panel Illumination.

    With the scan tool, read DTCs.

    Does the scan tool display- B1612-PANEL ILLUMINATION CONTROL CIRCUIT? 

    Yes 

    1. Go To  3).

    No 

    1. Replace the Clock Module in accordance with the service information.
    2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .
  3. 3)  CHECK THE A/C HEATER CONTROL FOR A SHORT TO GROUND 
    Fig 2: A/C Heater Control Harness Connector
    GC0043583Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the A/C Heater Control harness connector.

    Turn the ignition on.

    Activate the Panel Illumination.

    With the scan tool, read DTCs.

    Does the scan tool display: B1612-PANEL ILLUMINATION CONTROL CIRCUIT? 

    Yes 

    1. Go To  4).

    No 

    1. Replace the A/C Control in accordance with the service information.
    2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .
  4. 4)  CHECK THE PRNDL LAMP FOR A SHORT TO GROUND 
    Fig 3: PRNDL Lamp Harness Connector
    GC0043584Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the PRNDL Lamp harness connector.

    Turn the ignition on.

    Activate the Panel Illumination.

    With the scan tool, read DTCs.

    Does the scan tool display: B1612-PANEL ILLUMINATION CONTROL CIRCUIT? 

    Yes 

    1. Go To  5).

    No 

    1. Replace the PRNDL Lamp in accordance with the service information.
    2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .
  5. 5)  CHECK THE FRONT WINDOW SWITCH FOR A SHORT TO GROUND 
    Fig 4: Front Window Switch Harness Connector
    GC0043585Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the Front Window Switch harness connector.

    Turn the ignition on.

    Activate the Panel Illumination.

    With the scan tool, read DTCs.

    Does the scan tool display: B1612-PANEL ILLUMINATION CONTROL CIRCUIT? 

    Yes 

    1. Go To  6).

    No 

    1. Replace the Front Window Switch in accordance with the service information.
    2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .
  6. 6)  CHECK THE (E12) PANEL LAMPS DRIVER CIRCUIT FOR A SHORT TO GROUND 
    Fig 5: Measuring Resistance To Ground Of Panel Lamps Driver Circuit
    GC0043586Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the Instrument Cluster C1 harness connector.

    With all the above components disconnected, measure the resistance to ground of the (E12) Panel Lamps Driver Circuit from the Instrument Cluster C1 harness connector.

    Is the resistance less than 10K ohms? 

    Yes 

    1. Repair the (E12) Panel Lamps Driver circuit for a short to ground.
    2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .

    No 

    1. Go To  7).
  7. 7)  CHECK THE (E12) PANEL LAMPS DRIVER CIRCUIT FOR AN OPEN  
    Fig 6: Measuring Resistance Of Panel Lamps Driver Circuit
    GC0043587Courtesy of DAIMLERCHRYSLER CORP.

    With all the above components disconnected, measure the resistance of the (E12) Panel Lamps Driver Circuit between the Instrument Cluster C1 harness connector and the Window Switch harness connector.

    Is the resistance greater than 10K ohms? 

    Yes 

    1. Repair the (E12) Panel Lamps Driver circuit for an open.
    2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .

    No 

    1. Go To  8).
  8. 8)  CHECK THE (E12) PANEL LAMPS DRIVER CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 7: Measuring Voltage Of Panel Lamps Driver Circuit
    GC0043588Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition on.

    With all the above components disconnected, measure the voltage of the (E12) Panel Lamps Driver Circuit from the Instrument Cluster C1 harness connector.

    Is the voltage above 5.0 volts? 

    Yes 

    1. Repair the (E12) Panel Lamps Driver circuit for a short to voltage.
    2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .

    No 

    1. Replace the Instrument Cluster in accordance with the service information.
    2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .
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