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STEP
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INSPECTION
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ACTION
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1
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VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
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Yes
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Go to next step.
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No
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Record the FREEZE FRAME DATA on the repair order, then go to next step.
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2
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VERIFY REPAIR INFORMATION AVAILABILITY
• Verify related service repair information availability.
• Is any related repair information available?
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Yes
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Perform repair or diagnosis according to the available repair information.
• If the vehicle is not repaired, go to next step.
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No
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Go to next step.
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3
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INDETIFY TRIGGER DTC FOR FEEZE FRAME DATA
• Is DTC P0135 on FREEZE FRAME DATA?
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Yes
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Go to next step.
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No
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Go to FREEZE FRAME DATA DTC inspection.
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4
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CHECK FOR HO2S-11 HARNESS CONNECTOR
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Note
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• Refer to the PCM connector pin number in the beginning of this pinpoint test.
• Visually inspect the HO2S-11 circuit for exposed wiring, water contamination, corrosion and proper assembly.
• Were any concerns found during inspection?
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Yes
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Repair any concerns found during inspection, then go to Step 11.
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No
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Go to the next step.
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5
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PERFORM KEY ON ENGINE OFF (KOEO) SELF TEST
• Connect the WDS or equivalent to DLC.
• Turn the ignition switch to ON.
• Perform KOEO self test.
• Is DTCs P0135, P0141, P0155 or P0161 present?
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Yes
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Go to the next step.
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No
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Intermittent malfunction exist, go to the Step 11.
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6
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CHECK VPWR VOLTAGE TO HO2S-11 HARNESS VONNECTOR
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Note
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• If DTCs P0135 and P0155 or P0141 and P0161 are displayed, both heater circuits will require testing. DTCs displayed separately are to be test individually.
• Disconnect HO2S-11 connector.
• Turn the ignition switch to ON.
• Measure voltage between terminal 1 and 3 at HO2S-11 harness side connector.
• Is the voltage greater than 10.5 V?
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Yes
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Go to the next step.
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No
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Inspect fuse in VPWR circuit.
If fuse is okay repair open circuit.
Then go to Step 11.
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7
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CHECK HO2S-11 HEATER CIRCUIT FOR SHORT TO VPWR AND GND
• Disconnect PCM.
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- Measure resistance between following PCM harness side connector terminals:
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- Between terminal 93 (R.H.D.) /E-49 (L.H.D.) and 24, 51, 76, 103 (R.H.D.) /C-48, C-49 (L.H.D.)
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- Between terminal 93 (R.H.D.) /E-49 (L.H.D.) and 91 (R.H.D.) /E-41 (L.H.D.)
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- Between terminal 93 (R.H.D.) /E-49 (L.H.D.) and 71, 97 (R.H.D.) /C-35, C-36 (L.H.D.)
• Is each resistance greater than 10,000 ohms?
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Yes
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Go to the next step.
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No
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Repair short to VPWR or GND circuit, then go to Step 11.
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8
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CHECK HO2S HEATER CIRCUIT FOR OPEN IN HARNESS
• Measure resistance at harness side connectors between HO2S-11 terminal 1 and PCM terminal 93 (R.H.D.) /E-49 (L.H.D.)
• Is resistance less than 4.0 ohms?
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Yes
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Go to the next step
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No
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Repair for open or excessive resistance in the HO2S-11 heater circuit in harness, then go to Step 11.
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9
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CHECK HO2S-11 HEATER RESISITANCE
• Measure resistance at HO2S-11 component side connector between 1 and 2.
• Is resistance 3-30 ohms?
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Yes
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Go to the next step.
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No
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Replace HO2S-11, then go to Step 11.
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10
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CHECK HO2S CASE FOR SHORT TO VPWR, HEATER CONTROL AND SIGNAL RETURN
• Measure resistance for following:
• Between HO2S-11 component side connector terminal 2 and HO2S-11 case.
• Between terminal 2 and 3 at HO2S-11 component side connector.
• Between HO2S component side connector terminal 1 and HO2S-11 case
• Is the resistance greater than 10,000 ohms?
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Yes
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Replace PCM, then go to the next step.
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No
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Replace HO2S-11, then go to the next step.
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11
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VERIFY TROUBLESHOOTING OF DTC P0135 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Perform KOEO/KOER self test.
• Is the PENDING CODE same DTC present?
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Yes
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Replace PCM, then go to next step.
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No
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Go to next step.
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12
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VERIFY AFTER SERVICE PRECAUTION
• Perform "AFTER SERVICE PRECAUTION".
• Is there any DTC present?
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Yes
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Go to applicable DTC inspection.
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No
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Troubleshooting completed.
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