Steering Column Tilt Motor Control Circuit Test

Ignition OFF, disconnect the harness connector at the S71 Steering Column Tilt and Telescope Switch.
Test for less than 10 Ω between the low reference circuit terminal G and ground.
- If 10 Ω or greater
1. Ignition OFF.
2. Test for less than 2 Ω in the ground circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, replace the K99 Steering Column Position Control Module.
- If less than 10 Ω
Ignition ON.
Test for B+ between the signal circuits listed below and ground:
- Terminal B
- Terminal C
- If less than B+
1. Ignition OFF, disconnect the X1 harness connector at the K99 Steering Column Position Control Module.
2. Test for infinite resistance between the signal circuit and ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
  - If infinite resistance
3. Test for less than 2 Ω in the signal circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, replace the K99 Steering Column Position Control Module.
- If B+
Install a 3 A fused jumper wire between the signal circuits listed below and the low reference circuit terminal G. Verify the steering column tilts UP and DOWN to the soft stop.
NOTE: When performing the following test, make sure that the steering column is not already in the position the test is attempting to produce.
- Terminal B
- Terminal C
- If the M68 Steering Column Tilt Motor does not operate
1. Ignition OFF, disconnect the X2 harness connector at the K99 Steering Column Position Control Module.
2. Test for 0.6-1.0 Ω between terminal 9 and terminal 10.
  - If not within the specified range, replace the steering column.
  - If within the specified range, replace the K99 Steering Column Position Control Module.
- If the M68 Steering Column Tilt Motor operates
Test or replace the S71 Steering Column Tilt and Telescope Switch.