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Home >> Chrysler >> 2006 >> PT Cruiser Base, 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 1.6L Engine - DTCS P0646 To P127C >> Diagnosis And Testing >> P0692-Low Speed Fan Relay Control Circuit High >> Diagnostic Test

Diagnostic Test

  1. 1)  RADIATOR COOLING FAN MODULE OPERATION 

    Ignition on, engine not running.

    With a scan tool, actuate the Low Speed Cooling Fan.

    Is the Cooling Fan operating? 

    Yes 

    1. Refer to the INTERMITTENT CONDITION diagnostic procedure.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .

    No 

    1. Go To  2).
  2. 2)  (A16) FUSED B+ CIRCUIT 
    Fig 1: Checking Fused B+ Circuit
    GC0041674Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the Radiator Cooling Fan Module harness connector.

    Using a 12-volt test light connected to ground, probe the (A16) Fused B+ circuit in the Radiator Cooling Fan Module harness connector.

    Does the test light illuminate brightly? 

    Yes 

    1. Go To  3).

    No 

    1. Repair the (A16) Fused B+ circuit. Inspect the related fuse and repair as necessary.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .
  3. 3)  (Z903) GROUND CIRCUIT 
    Fig 2: Checking Ground Circuit
    GC0041675Courtesy of DAIMLERCHRYSLER CORP.

    Using a 12-volt test light connected to battery voltage, probe the (Z903) Ground circuit in the Radiator Cooling Fan Module harness connector.

    Does the test light illuminate brightly? 

    Yes 

    1. Go To  4).

    No 

    1. Repair the (Z903) Ground circuits.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .
  4. 4)  LOW SPEED RAD FAN CONTROL CIRCUIT 
    Fig 3: CHECKING LOW SPEED RAD FAN CONTROL CIRCUIT
    GC0041676Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition on, engine not running.

    With a scan tool, actuate the Low Speed Cooling Fan.

    Using a 12-volt test light connected to battery voltage, probe the (N201) Low Speed Rad Fan Control circuit in the Radiator Cooling Fan Module harness connector.

    Does the test light illuminate brightly and flash on and off? 

    Yes 

    1. Replace the Radiator Cooling Fan Module.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .

    No 

    1. Go To  5).
  5. 5)  (N201) LOW SPEED RAD FAN CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE 
    Fig 4: LOW SPEED RAD FAN CONTROL CIRCUIT SHORTED TO BATTERY VOLTAGE
    GC0041958Courtesy of DAIMLERCHRYSLER CORP.

    Turn ignition off.

    Disconnect the PCM harness connector.

    Turn ignition on, engine not running.

    Using a voltmeter, measure the voltage of the (N201) Low Speed Rad Fan Control circuit in the Radiator Cooling Fan Module harness connector.

    Is there voltage present? 

    Yes 

    1. Repair the short to voltage in the (N201) Low Speed Rad Fan Control circuit
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .

    No 

    1. Replace the Powertrain Control Module in accordance with the Service Information.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to STANDARD PROCEDURE - POWERTRAIN VERIFICATION TEST) .
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