STEP 1. Check harness connector C-45 at linear air-fuel ratio sensor and harness connector B-26 at ECM for damage.
STEP 2. Check for short circuit to power supply between linear air-fuel ratio sensor connector C-45 (terminal No. 4) and ECM connector B-26 (terminal No. 50).
STEP 3. Check for short circuit to power supply between linear air-fuel ratio sensor connector C-45 (terminal No. 1) and ECM connector B-26 (terminal No. 56).
STEP 4. Check for short circuit to power supply between linear air-fuel ratio sensor connector C-45 (terminal No. 5) and ECM connector B-26 (terminal No. 51).
STEP 5. Test the OBD-II drive cycle.
caution | To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958. |
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position and delete the DTC.
(3) Carry out the test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 22 . (4) Check the diagnostic trouble code (DTC).
Is DTC P0132 set?
Then go to Step 6. It can be assumed that this malfunction is intermittent. Refer to GROUP 00, How to Use Troubleshooting/ Inspection Service Points - How to Cope with Intermittent Malfunctions .
STEP 6. Replace the linear air-fuel ratio sensor.
STEP 7. Test the OBD-II drive cycle.
(1) Carry out a test drive with the drive cycle pattern. Refer to Diagnostic Function - OBD-II Drive Cycle - Pattern 22 . (2) Check the diagnostic trouble code (DTC).
Is DTC P0132 set?
Retry the troubleshooting. The inspection is complete.