Circuit/System Testing

Ignition/Vehicle - Off
Disconnect the electrical connector: X1@X53A Body Wiring Harness Junction Block - Rear
Verify a test lamp illuminates between ground circuit terminal 5 and B+.
- If the test lamp does not illuminate
1. Repair the open/high resistance on circuit 2050 or the ground connection.
- Go to next step: If the test lamp illuminates
Connect the X1 harness connector at the X53A Body Wiring Harness Junction Block - Rear. Disconnect the X7 harness connector at the K9 Body Control Module, ignition ON.
Verify the M33 Liftgate Window Latch is not activated.
- If the M33 Liftgate Window Latch is activated
1. Ignition OFF, disconnect the X1 harness connector at the X53A Body Wiring Harness Junction Block - Rear, ignition ON.
2. Test for less than 1 V between the K9 Body Control Module control circuit terminal 17 X7 and ground.
  - If 1 V or greater, repair the short to voltage on the circuit.
  - If less than 1 V, test or replace the X53A Body Wiring Harness Junction Block - Rear.
- Go to next step: If the M33 Liftgate Window Latch is not activated
Connect a 3 A fused jumper wire between the control circuit terminal 17 X7 and B+.
Verify the M33 Liftgate Window Latch activates.
- If the M33 Liftgate Window Latch does not activate
1. Ignition OFF, remove the jumper wire, disconnect the X1 harness connector at the X53A Body Wiring Harness Junction Block - Rear.
2. Test for infinite resistance between the K9 Body Control Module control circuit terminal 17 X7 and ground.
  - If less than Infinite resistance, repair the short to ground on the circuit.
  - Go to next step: If infinite resistance
3. Test for less than 2 Ω in the control circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, test or replace the X53A Body Wiring Harness Junction Block - Rear.
- Go to next step: If the M33 Liftgate Window Latch activates
Replace the K9 Body Control Module.