Circuit/System Testing
- Ignition/Vehicle - Off
- Disconnect the electrical connector: A23C Liftgate Latch
- Connect a test lamp between the test points: Control circuit terminal 3 & Control circuit terminal 4
- Ignition - On/Vehicle - In Service Mode
- Operate the component: E7AC Rear License Plate Lamp Module - Pressed
Verify the test lamp state:
Not Pressed = Test lamp Off
E7AC Rear License Plate Lamp Module - Pressed = Test lamp flashes On and Off
- If the test lamp is always OFF
- Ignition OFF, remove the test lamp, disconnect the X4 harness connector at the K194 Rear Gate Module
- Test for infinite resistance between the control circuit listed below and ground:
- Control 4681 and ground
- Control 4682 and ground
- If less than infinite resistance, repair the short to ground on the circuit.
- Go to next step: If infinite resistance
- Test for less than 2 Ω in the control circuit listed below end to end.
- Control 4681 end to end.
- Control 4682 end to end.
- If 2 Ω or greater, repair the open/high resistance in the circuit.
- If less than 2 Ω, replace the K194 Rear Gate Module
- If the test lamp is always ON
- Ignition OFF, remove the test lamp, disconnect the X4 harness connector at the K194 Rear Gate Module ignition ON.
- Test for less than 1 V between the control circuit listed below and ground:
- Control 4681 and ground
- Control 4682 and ground
- If 1 V or greater, repair the short to voltage on the circuit.
- If less than 1 V, replace the K194 Rear Gate Module
- Go to next step: If the test lamp turns ON and OFF
- Test or replace the component: A23C Liftgate Latch