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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 598 (DTCS B1059 To U0200) >> Diagnosis And Testing >> B1605-Right Solar Sensor Circuit High (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 (G139) SUN SENSOR NO. 2 SIGNAL CIRCUIT VOLTAGE 
    Fig 1: Checking Sun Sensor No. 2 Signal Circuit
    GC0028292Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the Sun Sensor harness connector.

    Turn the ignition on.

    Measure the voltage of the (G139) Sun Sensor No. 2 Signal circuit.

    What voltage is present? 

    Above 5.2 Volts 

    1. Go To step  2).

    4.8 Volts to 5.2 Volts 

    1. Go To step  3).

    Below 4.8 Volts 

    1. Go To step  5).
  2. 2)  CHECK (G139) SUN SENSOR NO. 2 SIGNAL CIRCUIT FOR A SHORT TO VOLTAGE 
    Fig 2: Checking Sun Sensor No. 2 Signal Circuit
    GC0028292Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the A/C Heater Control C1 harness connector.

    Turn the ignition on.

    Measure the voltage of the (G139) Sun Sensor No. 2 Signal circuit.

    Is the voltage above 0.2 volts? 

    Yes 

    1. Repair the (G139) Sun Sensor No. 2 Signal circuit for a short to voltage.
    2. Perform BODY VERIFICATION TEST - VER 1 .

    No 

    1. Replace the A/C Heater Control in accordance with the Service Information.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  3. 3)  CHECK (G939) SUN SENSOR RETURN CIRCUIT FUNCTION 
    Fig 3: Checking Sun Sensor Return Circuit Function
    GC0028293Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Connect a jumper wire between the (G139) Sun Sensor No. 2 Signal circuit and the (G939) Sun Sensor Return circuit in the Sun Sensor harness connector.

    Turn the ignition on.

    With the scan tool in HVAC, select Data Display and read the Right Solar Sensor voltage.

    Is the voltage below 0.2 volts? 

    Yes 

    1. Replace the Sun Sensor in accordance with the Service Information.
    2. Perform BODY VERIFICATION TEST - VER 1 .

    No 

    1. Go To step  4).
  4. 4)  CHECK (G939) SUN SENSOR RETURN CIRCUIT FOR AN OPEN 
    Fig 4: Checking Sun Sensor Return Circuit
    GC0028287Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the A/C Heater Control C1 harness connector.

    Measure the resistance of the (G939) Sun Sensor Return circuit between the Sun Sensor harness connector and the A/C Heater Control C1 harness connector.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Replace the A/C Heater Control in accordance with the Service Information.
    2. Perform BODY VERIFICATION TEST - VER 1 .

    No 

    1. Repair the (G939) Sun Sensor Return circuit for an open.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  5. 5)  CHECK (G139) SUN SENSOR NO. 2 SIGNAL CIRCUIT FOR AN OPEN 
    Fig 5: Checking Sun Sensor No. 2 Signal Circuit For Open
    GC0028294Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the A/C Heater Control C1 harness connector.

    Measure the resistance of the (G139) Sun Sensor No. 2 Signal circuit between the Sun Sensor harness connector and the A/C Heater Control C1 harness connector.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Replace the A/C Heater Control in accordance with the Service Information.
    2. Perform BODY VERIFICATION TEST - VER 1 .

    No 

    1. Repair the (G139) Sun Sensor No. 2 Signal circuit for an open.
    2. Perform BODY VERIFICATION TEST - VER 1 .
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