Service Procedure
SERVICE PROCEDUREA. Inspect Oxygen Sensor Wiring and Install Heat Shield:
1. Raise the vehicle on a hoist.
Fig. 1:
2. Inspect the rear mini-catalyst downstream oxygen sensor wiring between the oxygen sensor and the harness connector for melted insulation (Figure 1).
3. If the insulation on any of the four oxygen sensor wires is melted, proceed to Section "B" - Replace Oxygen Sensor and Inspect Oxygen Sensor Heater Fuse. If no melted wiring insulation is found, continue with Step 4.
4. Route the rear mini-catalyst downstream oxygen sensor wiring between the engine oil pan and oil pan studs.
Fig. 2:
5. Install the heat shield over the oil pan studs so that the shield covers the rear mini-catalyst downstream oxygen sensor wires (Figure 2).
6. Push the retaining clips over the oil pan studs to hold the heat shield in place (Figure 2).
7. Lower the vehicle
B. Replace Oxygen Sensor and Inspect Oxygen Sensor Heater Fuse:
NOTE:
Only vehicles with melted oxygen sensor wiring insulation as determined by the inspection in Section "A" require oxygen sensor replacement.
1. Disconnect the rear mini-catalyst downstream oxygen sensor connector.
2. Using a Snap-on YA8875 or equivalent oxygen sensor wrench, remove the rear mini-catalyst downstream oxygen sensor from the catalyst pipe.
3. Install a new oxygen sensor and torque sensor to 22 ft. lbs. (30 Nm).
4. Route the rear mini-catalyst downstream oxygen sensor wiring between the engine oil pan and oil pan studs.
Fig. 2:
5. Install the heat shield over the oil pan studs so that the shield covers the rear mini-catalyst downstream oxygen sensor wires (Figure 2).
6. Push the retaining clips over the oil pan studs to hold the heat shield in place (Figure 2).
7. Connect the rear mini-catalyst downstream oxygen sensor connector to the wiring harness connector.
8. Lower the vehicle.
Fig. 3:
9. Open the power distribution center cover (located in the engine compartment, next to the battery) and inspect the fuse in cavity number 17 (Figure 3). If the fuse is blown, replace the fuse with a new 20 amp fuse.
CAUTION:
Failure to replace a blown fuse will cause the "Check Engine" light to illuminate at some point in the future. The "Check Engine" light will not illuminate until the On-Board Diagnostic (OBD) system performs an oxygen sensor heater monitor test and fails the test after two cold engine start-ups.
10. Close the cover on power distribution center.
C. Install the Authorized Modifications Label:
Fig. 4:
Type or print (with a ballpoint pen) the necessary information shown in Figure 4 onto the Authorized Modifications Label. Then attach the label near the VECI label.
D. Complete Proof of Correction Form for California Residents:
This recall is subject to the State of California Registration Renewal/Emissions Recall Enforcement Program. Complete a Vehicle Emission Recall Proof of Correction Form (Form No.81-016-1053) and supply it to vehicle owners residing in the state of California for proof that this recall has been performed when they renew the vehicle registration.