Pinpoint Test 8: Tire/Axle Out Of Acceptable Range

PINPOINT TEST 8: TIRE/AXLE OUT OF ACCEPTABLE RANGE

Normal Operation

The four wheel drive (4WD) system continuously monitors vehicle conditions and automatically adjusts the torque distribution between the front and rear wheels. During normal operation, most of the torque is sent to the front wheels. If wheel slip between the front and rear wheels is detected or the vehicle is under heavy acceleration, the 4WD system increases the torque to the rear wheels.

- DTC P1635 (Tire/Axle Out of Acceptable Range) - sets when the 4X4 control module detects inappropriate mini spare or road wheels/tires (greater than 7% across the front and rear axle or 14% at one wheel) installed.

Possible Causes
- Wheels/tires
- Wheel speed sensors
- ABS module
- 4X4 control module

Diagnostic Procedure

WARNING:When directed to drive the vehicle as part of this test, drive the vehicle on a hard surface in an area without traffic to prevent a crash. Failure to follow these instructions may result in personal injury.
NOTE:This test must be carried out on a hard surface in a vacant area without traffic.
NOTE:Carry out Steps 1-7 outlined in Inspection and Verification prior to carrying out this test. See Initial Inspection and Diagnostic Overview.

Step 1-Step 4:

Step 5: