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Circuit/System Testing

NOTE:

It may take up to 2 min for all vehicle systems to power down before an accurate ground or low reference circuit continuity test can be performed.

Ignition/Vehicle & All vehicle systems - Off
Disconnect the electrical connector: B70 Liftgate Close Switch
Test for less than 10 ohms between the test points: Low Reference circuit terminal 1 & Ground
- If 10 ohms or greater
1. Disconnect the electrical connector: K39 Liftgate Control Module
2. Test for less than 2 ohms between the test points: Low Reference circuit terminal 1 @ Component harness & Terminal 16 X1 @ Control module harness
  - If 2 ohms or greater - Repair the open/high resistance in the circuit.
  - If less than 2 ohms - Replace the component: K39 Liftgate Control Module
- If less than 10 ohms
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: K39 Liftgate Control 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.
  - If infinite resistance
4. Test for less than 2 ohms between the test points: Control circuit terminal 2 @ Component harness & Terminal 13 X1 @ Control module harness
  - If 2 ohms or greater - Repair the open/high resistance in the circuit.
  - If less than 2 ohms - Replace the component: K39 Liftgate Control Module
- If the test lamp turns On
Test or replace the component: B70 Liftgate Close Switch