B1980
B1980 - POWER LIFTGATE LATCH CONTROL 1 CIRCUIT LOWB1980 - Power Liftgate Latch Control 1 Circuit Low:
WHEN MONITORED
Anytime the Power Liftgate is in a latch cinch or release operation.
SET CONDITION
When the liftgate latch motor cinch or release output is pulled low prior to or during a latch cinch or release operation, this code will set.
POSSIBLE CAUSES
- Binding latch
- Low battery voltage
- (Q84) Liftgate latch cinch driver circuit short to ground
- (Q85) Liftgate latch release driver circuit short to ground
- (Q84) Liftgate latch cinch driver circuit short (Q85) liftgate latch release driver circuit
- Latch assembly
- Power liftgate module
Diagnostic Test
1. DTC PRESENT
With the scan tool, record and erase DTC's.
Turn the ignition off, wait 10 seconds, then turn the ignition on.
Operate the power liftgate several times if possible.
With the scan tool, read DTCs.
If the B210D-BATTERY VOLTAGE LOW DTC is present, repair that code before proceeding.
Q: Does the scan tool display B1980-POWER LIFTGATE LATCH CONTROL 1 CIRCUIT LOW?
YES: Go To 2
NO: Using the wiring diagram/schematic as a guide, inspect the wiring and connectors for an intermittent condition. Operate the liftgate several times and check for any binding conditions in the latch assembly. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
2. BINDING LIFTGATE LATCH
Examine the liftgate for proper alignment, worn or binding hinges, latch alignment or anything that would cause an obstruction to proper operation.
With an open liftgate, manually close the latch and open it with the handle switch several times.
Q: Were there any mechanical problems found?
YES: Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 3
3. (Q84) LIFTGATE LATCH CINCH DRIVER CIRCUIT SHORT TO (Q901) LOGIC GROUND
Turn the ignition off.
Disconnect the Power Liftgate Latch connector.
Measure the resistance between the (Q901) Logic Ground circuit and the (Q84) Liftgate Latch Cinch Driver circuit in the latch connector.
Wiggle the harness and check for an intermittent short circuit condition.
Q: Is the resistance below 100.0 ohms?
YES: Go To 6
NO: Go To 4
4. (Q85) LIFTGATE LATCH RELEASE DRIVER CIRCUIT SHORT TO (Q901) LOGIC GROUND
Measure the resistance between the (Q901) Logic Ground circuit and the (Q85) Liftgate Latch Release Driver circuit in the latch connector.
Wiggle the harness and check for an intermittent short circuit condition.
Q: Is the resistance below 100.0 ohms?
YES: Go To 6
NO: Go To 5
5. (Q84) LIFTGATE LATCH CINCH DRIVER CIRCUIT SHORT (Q85) LIFTGATE LATCH RELEASE DRIVER CIRCUIT
Disconnect the Power Liftgate Module C2 connector.
Measure the resistance between the (Q84) Liftgate Latch Cinch Driver circuit and the (Q85) Liftgate Latch Release Driver circuit in the PLG C2 connector.
Q: Is the resistance below 10000.0 ohms?
YES: Repair the (Q84) Liftgate Latch Cinch Driver circuit for a short to the (Q85) Liftgate Latch Release Driver Circuit. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the Power Liftgate Latch assembly. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
6. (Q85) LIFTGATE LATCH RELEASE DRIVER WIRE SHORT TO GROUND
Disconnect the Power Liftgate Module C2 connector.
Measure the resistance between the vehicle ground and the (Q85) Lift-gate Latch Release Driver circuit in the latch connector.
Wiggle the harness and check for an intermittent short circuit condition.
Q: Is the resistance below 10000.0 ohms?
YES: Repair the (Q85) Liftgate Latch Release Driver circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 7
7. (Q84) LIFTGATE LATCH CINCH DRIVER WIRE SHORT TO GROUND
Measure the resistance between the vehicle ground and the (Q84) Lift-gate Latch Cinch Driver circuit in the latch connector.
Wiggle the harness and check for an intermittent short circuit condition.
Q: Is the resistance below 10000.0 ohms?
YES: Repair the (Q84) Liftgate Latch Cinch Driver circuit for a short to ground. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the Power Liftgate Module. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test