Circuit/System Testing

Ignition/Vehicle - Off
Disconnect the electrical connector: K89 Immobilizer Control Module
Test for less than 10 ohms between the test points: Ground circuit terminal 1 & Ground
- If less than 10 ohms
1. Disconnect the electrical connector: K9 Body Control Module
2. Test for less than 2 ohms between the test points: K89 Immobilizer Control ModuleGround circuit terminal 1 & K9 Body Control ModuleGround circuit terminal X3 1
  - If greater than 2 ohmsRepair the open/high resistance in the circuit.
  - If less than 2 ohms - Replace the component: K9 Body Control Module
- Go to next step: If greater than 10 ohms
Verify a test lamp turns On between the test points: B+ circuit terminal 3 & Ground
- If the test lamp does not turn On
1. Ignition/Vehicle - Off
2. Disconnect the electrical connector: K9 Body Control Module
3. Test for infinite resistance between the test points: B+ circuit terminal 3K89 Immobilizer Control Module & Ground
  - If less than infinite resistance - Repair the short to ground on the circuit.
  - If infinite resistanceReplace the component: K9 Body Control Module
- Go to next step: If the test lamp turns On
Test for less than 2 ohms between the test points: K89 Immobilizer Control ModuleSignal circuit terminal 2 & K9 Body Control ModuleSignal circuit terminal X3 2
- If greater than 2 ohms
  Repair the open/high resistance in the circuit.
- Go to next step: If less than 2 ohms
Replace the component: K89 Immobilizer Control Module