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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 597 (DTCS B105B To B1058) >> Diagnosis And Testing >> B105B-RECIRCULATION Door Control Circuit Open (ATC) >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
  1. 1)  CHECK FOR ACTIVE CONTROL CIRCUIT/PERFORMANCE DTCs 

    Turn the ignition on.

    With the scan tool, read active HVAC DTCs.

    Does the scan tool display any active: XXXX CONTROL CIRCUIT/PERFORMANCE DTCs? 

    Yes 

    1. Diagnose and repair the DTC(s). Refer to the DIAGNOSTIC CODE INDEX for a complete list of all HVAC related symptoms.

    No 

    1. Go To step  2).
  2. 2)  CHECK THE RECIRCULATION DOOR ACTUATOR CIRCUIT RESISTANCE 
    Fig 1: Checking Recirculation Door Actuator Circuit
    GC0028247Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the A/C Heater Control C2 harness connector.

    Measure the resistance between the (C268) Recirculation Door Driver circuit and the (C68) Recirculation Door Common Driver circuit in the A/C Heater Control C2 harness connector.

    Is the resistance above 70.0 ohms? 

    Yes 

    1. Go To step  3).

    No 

    1. Replace the A/C Heater Control in accordance with the Service Information.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  3. 3)  CHECK THE (C268) RECIRCULATION DOOR DRIVER CIRCUIT FOR AN OPEN 
    Fig 2: Checking Recirculation Door Driver Circuit For Open
    GC0028248Courtesy of DAIMLERCHRYSLER CORP.

    Disconnect the Recirculation Door Actuator harness connector.

    Measure the resistance of the (C268) Recirculation Door Driver circuit between the Recirculation Door Actuator harness connector and the A/C Heater Control C2 harness connector.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Go To step  4).

    No 

    1. Repair the (C268) Recirculation Door Driver circuit for an open.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  4. 4)  CHECK THE (C68) RECIRCULATION DOOR COMMON DRIVER CIRCUIT FOR AN OPEN 
    Fig 3: Checking Recirculation Door Common Driver Circuit For Open
    GC0028249Courtesy of DAIMLERCHRYSLER CORP.

    Measure the resistance of the (C68) Recirculation Door Common Driver circuit between the Recirculation Door Actuator harness connector and the A/C Heater Control C2 harness connector.

    Is the resistance below 5.0 ohms? 

    No 

    1. Replace the Recirculation Door Actuator in accordance with the Service Information.
    2. Perform BODY VERIFICATION TEST - VER 1 .

    Yes 

    1. Repair the (C68) Recirculation Door Common Driver circuit for an open.
    2. Perform BODY VERIFICATION TEST - VER 1 .
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