STEP 1. Check the exhaust gas with the engine at normal operating temperature.
STEP 2. Check the following items.
STEP 3. Check the driveability.
STEP 4. Using scan tool (M.U.T.-III), read the diagnostic trouble code (DTC).
caution | To prevent damage to scan tool (M.U.T.-III), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-III). |
(1) Connect scan tool (M.U.T-III). Refer to HOW TO CONNECT THE SCAN TOOL (M.U.T.-III) . (2) Turn the ignition switch to the "ON" position.
(3) Read the DTC.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Is any DTC stored?
Refer to Diagnostic Trouble Code Chart . Go to Step 5.
STEP 5. Check the ignition timing.
STEP 6. Using scan tool (M.U.T.-III), check data list.
(1) Turn the ignition switch to the "ON" position.
(2) Check the following items in the data list. Refer to Data List Reference Table .- Item 5: Intake Air Temperature Sensor
- Item 6: Engine Coolant Temperature Sensor
- Item BB: Barometric Pressure Sensor
- Item E1: Linear Air-fuel Ratio Sensor
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Are they operating properly?
Go to Step 7. Repair or replace it. Then confirm that the malfunction symptom is eliminated.
STEP 7. Using scan tool (M.U.T-III), check data list item AD: Heated oxygen sensor bank 1, sensor 2 (right rear).
(1) Start the engine and run at idle.
(2) Set scan tool (M.U.T-III) to the data reading mode for item AD, Heated Oxygen Sensor bank 1, sensor 2 (right rear).- Transaxle: L range
- Drive with wide open throttle
- Engine: 3,500 r/min
- The output voltages should be between 0.6 and 1.0 volt.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Is the sensor operating properly?
Go to Step 8. Refer to DTC P0137 - Heated Oxygen Sensor Circuit Low Voltage (bank 1, sensor 2) , DTC P0138 - Heated Oxygen Sensor Circuit High Voltage (bank 1, sensor 2) , DTC P0139 - Heated Oxygen Sensor Circuit Slow Response (bank 1, sensor 2) , DTC P0140 - Heated Oxygen Sensor Circuit No Activity Detected (bank 1, sensor 2) .
STEP 8. Using scan tool (M.U.T-III), check data list item AF: Heated oxygen sensor bank 2, sensor 2 (left rear).
(1) Start the engine and run at idle.
(2) Set scan tool (M.U.T-III) to the data reading mode for item AF, Heated Oxygen Sensor bank 2, sensor 2 (left rear).- Transaxle: L range
- Drive with wide open throttle
- Engine: 3,500 r/min
- The output voltage should be between 0.6 and 1.0 volt.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Is the sensor operating properly?
Go to Step 9. Refer to DTC P0157 - Heated Oxygen Sensor Circuit Low Voltage (bank 2, sensor 2) , DTC P0158 - Heated Oxygen Sensor Circuit High Voltage (bank 2, sensor 2) , DTC P0159 - Heated Oxygen Sensor Circuit Slow Response (bank 2, sensor 2) , DTC P0160 - Heated Oxygen Sensor Circuit No Activity Detected (bank 2, sensor 2) .
STEP 9. Check the EGR system.
STEP 10. Check the fuel pressure.
STEP 11. Check the spark plugs.
STEP 12. Check the ignition coil.
STEP 13. Check the compression pressure.
STEP 14. Check the positive crankcase ventilation system.
STEP 15. Check the evaporative emission control system.
STEP 16. Check the following items.
(1) Check the following items.- Check the injectors for fuel leakage.
- Check if the injectors are clogged.
Are there any abnormalities?
Replace it. Then confirm that the malfunction symptom is eliminated. Replace the catalytic converter. Then confirm that the malfunction symptom is eliminated.