Circuit/System Testing
- Ignition/Vehicle OFF, disconnect the X1 harness connector at the K43 Power Steering Control Module.
- Verity a test lamp illuminates between ground circuit terminal 1 and B+.
- If the test lamp does not illuminate
- Repair the open/high resistance on the circuit or ground connection.
- Go to next step: If the test lamp illuminates
- Verify a test lamp illuminates between the B+ circuit terminal 2 and ground.
- If the test lamp does not illuminate and the circuit fuse is OK
- Test the circuit for an open/high resistance:
- If an open/high resistance is found, repair the fault on the circuit.
- Go to next step: If an open/high resistance is not found
- Verify there is voltage at the fuse.
- If the test lamp does not illuminate and the circuit fuse is OPEN
- Test the circuit for a short to ground:
- If a short to ground is found, repair the fault on the circuit.
- Go to next step: If a short to ground is not found
- Replace the Steering Gear.
- Go to next step: If the test lamp illuminates
- Replace the Steering Gear.
NOTE:
This ground circuit is capable of carrying significant current. Testing using a DMM or test lamp is sufficient to determine continuity of the circuit and ground but a voltage drop test may be appropriate if vehicle symptoms indicate circuit integrity, ground integrity, or the current carrying capability of the circuit are in question. Refer to Measuring Voltage Drop , and Testing Ground and Low Reference Circuits for instructions on measuring voltage drop. Overall voltage drop should be less than 1 V.