Circuit/System Testing

Ignition/Vehicle & All vehicle systems - Off
Open the liftgate.
Disconnect the electrical connector: B70 Liftgate Close Switch
Verify a test lamp turns On between the test points: Control circuit terminal 2 & Low Reference circuit terminal 1
- If the test lamp does not turn On
1. Ignition/Vehicle - Off & Remove - Test lamp
2. Disconnect the electrical connector: X4 @ K194 Rear Gate Module
3. Test for infinite resistance between the test points: Control circuit terminal 2 @ Component harness & Ground
  - If less than infinite resistance - Repair the short to ground on the circuit.
  - Go to next step: If infinite resistance
4. Test for less than 2 ohms between the test points: Control circuit terminal 2 @ Component harness & Terminal 8 X4 @ Control module harness
  - If 2 ohms or greater - Repair the open/high resistance in the circuit.
  - If less than 2 ohms - Replace the component: K194 Rear Gate Module
- Go to next step: If the test lamp turns On
Ignition/Vehicle - Off
Disconnect the electrical connector: X4 @ K194 Rear Gate Module
Ignition - On/Vehicle - In Service Mode
Verify a test lamp does not turn On between the test points: Control circuit terminal 2 & Low Reference circuit terminal 1
- If the test lamp turns On
1. Ignition/Vehicle - Off & Remove - Test lamp
2. Ignition - On/Vehicle - In Service Mode
3. Test for less than 1 V between the test points: Control circuit terminal 2 @ B70 Liftgate Close Switch & Ground
  - If 1 V or greater - Repair the short to voltage on the circuit.
  - If less than 1 V - Replace the component: B70 Liftgate Close Switch
- Go to next step: If the test lamp does not turn On
Replace the component: K194 Rear Gate Module