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Home >> Chrysler >> 2007 >> Crossfire Base, 2D Convertible >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P0133 To P0153 >> P0135-O2 Sensor 1/1 Heater Performance >> Diagnostic Test
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Diagnostic Test

  1. 1) PRE-DIAGNOSTIC CHECK OUT 
    NOTE: Always perform diagnostics with a fully charged battery.
    NOTE: Check connectors - Clean/repair as necessary. Poor pin to terminal connections can set DTCs.
    NOTE: Check for applicable TSBs related to the problem.

    Turn the ignition on.

    With the scan tool, read PCM DTCs.

    Using the wiring diagram/schematic as a guide, inspect the wiring and connectors. Repair as necessary.

    Perform this procedure prior to symptom diagnosis. 

    Continue 

    1. Go to  2).
  2. 2) CHECK FOR CURRENT DTC 
    NOTE: If the PCM detects and stores a DTC, the PCM also stores the engine/vehicle operating conditions under which the DTC was set. Some of these conditions are displayed on the scan tool at the same time the DTC is displayed.
    NOTE: Before erasing stored DTCs, record these conditions. Attempting to duplicate these conditions may assist when checking for an active DTC.

    Turn the ignition on.

    With the scan tool, erase PCM DTCs.

    NOTE: It maybe necessary to road test the vehicle for this DTC to set.

    With the scan tool, read PCM DTCs.

    Did this DTC set again? 

    Yes 

    1. Go to  3).

    No 

    1. Go to  8).
  3. 3) PCM 
    Fig 1: Checking O2 Heater Element Control Circuits
    GC0034142Courtesy of CHRYSLER LLC
    NOTE: Check the Engine Control Fuse 2 in the Relay Control Module. If it is open, multiple DTCs will be set in the PCM. Determine the cause of the open fuse before continuing using the wiring diagrams/schematics as a guide.

    Turn the ignition off.

    Disconnect the PCM harness connectors.

    NOTE: Check connectors - Clean/repair as necessary.

    Turn the ignition on.

    Measure the voltage of the O2 Sensor Heater Control circuit at the PCM harness connector.

    Is the voltage above 10 volts? 

    Yes 

    1. Replace and program the Powertrain Control Module. Refer to REMOVAL .
    2. Perform POWERTRAIN VERIFICATION TEST - VER 2 .

    No 

    1. Go to  4).
  4. 4) O2 SENSOR HEATER CONTROL CIRCUIT SHORT TO GROUND 
    Fig 2: Checking O2 Heater Element Control Circuit
    GC0034143Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Disconnect the O2 Sensor harness connector.

    NOTE: Check connectors - Clean/repair as necessary.

    Measure the resistance between ground and the O2 Sensor Heater Control circuit.

    Is resistance above 100 kohms? 

    Yes 

    1. Go to  5).

    No 

    1. Repair the O2 Sensor Heater Control circuit for a short to ground.
    2. Perform POWERTRAIN VERIFICATION TEST - VER 2 .
  5. 5) O2 SENSOR HEATER CONTROL CIRCUIT SHORT TO VOLTAGE 
    Fig 3: Checking O2 Heater Element Control Circuit
    GC0034144Courtesy of CHRYSLER LLC

    Turn the ignition on.

    Measure the voltage of the O2 Sensor Heater Control circuit at the O2 Sensor harness connector.

    Is the voltage below 1.0 volt? 

    Yes 

    1. Go to  6).

    No 

    1. Repair the O2 Sensor Heater Control circuit for a short to voltage.
    2. Perform POWERTRAIN VERIFICATION TEST - VER 2 .
  6. 6) O2 SENSOR HEATER CONTROL CIRCUIT OPEN 
    Fig 4: Checking O2 Sensor Heater Element Control Circuit
    GC0034145Courtesy of CHRYSLER LLC

    Turn the ignition off.

    Measure the resistance of the O2 Sensor Heater Control circuit from the O2 Sensor harness connector to the PCM harness connector.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Go to  7).

    No 

    1. Repair the O2 Sensor Heater Control circuit for an open.
    2. Perform POWERTRAIN VERIFICATION TEST - VER 2 .
  7. 7) FUSED ENGINE CONTROL RELAY OUTPUT CIRCUIT OPEN 
    Fig 5: Checking Relay Output Circuit
    GC0034146Courtesy of CHRYSLER LLC

    Turn the ignition on.

    Measure the voltage of the Fused Engine Control Relay Output circuit at the O2 Sensor harness connector.

    Is the voltage above 10 volts? 

    Yes 

    1. Replace the O2 Sensor. Refer to REMOVAL .
    2. Perform POWERTRAIN VERIFICATION TEST - VER 2 .

    No 

    1. Repair the Fused Engine Control Relay Output circuit for an open.
    2. Perform POWERTRAIN VERIFICATION TEST - VER 2 .
  8. 8) INTERMITTENT WIRING AND CONNECTORS 

    The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition.

    NOTE: Check connectors - Clean/repair as necessary. Poor pin to terminal connections can set DTCs.
    NOTE: Check for any Technical Service Bulletins that may apply.

    Using the wiring diagram/schematic as a guide, inspect the wiring and connectors specific to this DTC. Wiggle the wires while checking for shorts and open circuits.

    Were there any problems found? 

    Yes 

    1. Repair as necessary.
    2. Perform POWERTRAIN VERIFICATION TEST - VER 2 .

    No 

    1. The condition that caused this DTC to set is currently not present. Inspect the related wiring harness for a possible intermittent condition.
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