Electrical - MIL ON/DTC's P0480/P0526/P1481/P1484

2006 Service Bulletins

TSB SB06-04-S004

Malfunction Indicator Lamp (MIL) Or Check Engine Light On, DTC P0480, P0526, P1481, P1484 Set (This Bulletin Supersedes 5B06-04-S001)

ISSUE DATE: MAY 2006

Affected Vehicles

2003-2006 Isuzu Ascender (US/UT)

Service Information

This bulletin is being updated to add the 2006 model year and to add additional service information.

Condition

Some customers may comment that the Malfunction Indicator Lamp (M IL) or Check Engine light is illuminated. This condition may be intermittent and upon investigation, the technician may find DTC P0480, P0526, P1481, P1484 set.





Possible Cause:
This condition may be caused by the cooling fan harness chaffing against the plastic guide it routes through. This contact may damage the insulation of the wires enclosed in that harness.

Correction:
Replace the engine cooling fan harness using the procedure listed below.

Service Procedure

Replace the engine cooling fan harness using the procedure listed below.

1. Remove the cooling fan. Refer to the Cooling Fan and Shroud Replacement procedure in the Engine Cooling sub-section of the Service Manual.

2. Place the cooling fan assembly on a bench.

3. Disconnect the harness electrical connector from the cooling fan clutch.

4. Remove the harness from the plastic guide while feeding the wires out of the slot.

5. Before installing the new harness, wrap the affected area on the wires with electrical tape to keep the protective sleeve in place. Be sure to keep the tape approximately 25 mm (1 in) away from the connector so the wires can be fed into the slot.

6. Feed the wires into the slot and install the harness to the plastic guide.

7. Connect the harness electrical connector to the cooling fan clutch.

8. Install the cooling fan. Refer to the Cooling Fan and Shroud Replacement procedure in the Engine Cooling sub-section of the Service Manual.





Parts Information

Warranty Claim Information





Use the labor operation shown.

NOTE:

1. Labor Time includes administrative time allowance.

2. Information released on paper and electronic format prior to bulletin release cannot be updated. For the most current and up to date information refer to website

3. Always refer to the Isuzu Service Policy Procedure Manual for specific details on warranty coverage and policies.





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