Pinpoint Test F: The Liftgate Glass Latch Release Is Inoperative/Does Not Operate Correctly
Handles, Locks, Latches and Entry Systems
Pinpoint Tests
Pinpoint Test F: The Liftgate Glass Latch Release Is Inoperative/Does Not Operate Correctly
Refer to Wiring Diagram Set 117, Remote Keyless Entry and Alarm for schematic and connector information. Diagrams By Number
Normal Operation
When the Smart Junction Box (SJB) receives an open request from the liftgate glass release switch, a Remote Keyless Entry (RKE) (vehicles without power liftgate) or the keyless entry keypad (if equipped), the SJB supplies voltage to the liftgate glass latch. The liftgate glass latch has a dedicated ground circuit.
The SJB sends a voltage signal to the liftgate glass release switch through the input circuit. When the liftgate glass release switch is pressed, the voltage signal is routed to ground, signaling the SJB to release the liftgate glass. The liftgate glass release switch has a dedicated ground circuit.
- DTC B2667 (Liftglass Release Switch Circuit Failure) - a continuous and on-demand DTC that sets when the SJB detects a short to ground on the liftgate glass release switch input circuit. This DTC may also set if the liftgate glass release switch is pressed for longer than 2 minutes.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Liftgate glass release switch
- Liftgate glass release actuator (integral to the liftgate glass latch)
- SJB
PINPOINT TEST F: THE LIFTGATE GLASS LATCH RELEASE IS INOPERATIVE/DOES NOT OPERATE CORRECTLY
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
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F1 CHECK THE DOOR LOCK OPERATION
- Lock and unlock the doors using a door lock control switch.
- Do the door locks operate correctly?
Yes
GO to F2.
No
GO to Pinpoint Test A. Pinpoint Test A: All Door Locks Are Inoperative
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F2 CHECK THE RECORDED SJB DTCs FROM THE SELF-TEST
- Check the recorded results from the SJB self-test.
- Is DTC B2667 present?
Yes
GO to F3.
No
GO to F5.
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F3 CHECK THE LIFTGATE GLASS RELEASE SWITCH (SHORT TO GROUND)
- Disconnect: Liftgate Glass Release Switch C4039 .
- Clear the DTC and carry out the SJB self-test.
- Is DTC B2667 still present?
Yes
GO to F4.
No
INSTALL a new liftgate glass release switch. TEST the system for normal operation.
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F4 CHECK THE LIFTGATE GLASS RELEASE SWITCH INPUT CIRCUIT FOR A SHORT TO GROUND
- Ignition OFF.
- Disconnect: SJB C2280c .
- Measure the resistance between the liftgate glass release switch C4039-2, circuit 1760 (WH/VT), harness side and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to F14.
No
REPAIR circuit 1760 (WH/VT) for a short to ground. CLEAR the DTCs. REPEAT the self-test.
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F5 MONITOR THE LIFTGATE GLASS RELEASE SWITCH PID
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: SJB DataLogger .
- Monitor the SJB liftgate glass release switch PID (LIFTGLASS_SW) while pressing the liftgate glass release switch.
- Does the PID indicate the liftgate release switch is active?
Yes
GO to F9.
No
GO to F6.
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F6 CHECK THE LIFTGATE GLASS RELEASE SWITCH
- Disconnect: Liftgate Glass Release Switch C4039 .
- Unlock the doors with the door lock control switch.
- Connect a fused jumper wire between the liftgate glass release switch C4039-2, circuit 1760 (WH/VT), harness side and the liftgate glass release switch C4039-1, circuit 57 (BK), harness side.
- Does the liftgate glass latch release?
Yes
INSTALL a new liftgate glass release switch. TEST the system for normal operation.
No
REMOVE the jumper wire. GO to F7.
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F7 CHECK THE GROUND CIRCUIT TO THE SWITCH FOR AN OPEN
- Ignition OFF.
- Disconnect: Negative Battery Cable .
- Measure the resistance between the liftgate glass release switch C4039-1, circuit 57 (BK), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
GO to F8.
No
REPAIR circuit 57 (BK) for an open. TEST the system for normal operation.
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F8 CHECK LIFTGATE GLASS RELEASE SWITCH INPUT CIRCUIT FOR AN OPEN
- Connect a fused jumper wire between the liftgate glass release switch C4039-2, circuit 1760 (WH/VT), harness side and the liftgate glass release switch C4039-1, circuit 57 (BK), harness side.
- Disconnect: SJB C2280c .
- Measure the resistance between the SJB C2280c-20, circuit CPL60 (BN/YE), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
GO to F14.
No
REPAIR circuit CPL60 (BN/YE) for an open. TEST the system for normal operation.
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F9 CHECK FOR A SHORT TO VOLTAGE TO THE LIFTGATE GLASS LATCH
- Disconnect: Liftgate Glass Latch C4040 .
- Measure the voltage between the liftgate glass latch C4040-4, circuit CPL59 (BN/BU), harness side and ground.
- Is any voltage present?
Yes
GO to F10.
No
GO to F11.
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F10 CHECK THE LIFTGATE GLASS LATCH OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
- Ignition OFF.
- Disconnect: SJB C2280d .
- Ignition ON.
- Measure the voltage between the liftgate glass latch C4040-4, circuit CPL59 (BN/BU), harness side and ground.
- Is any voltage present?
Yes
REPAIR circuit CPL59 (BN/BU) for a short to voltage. TEST the system for normal operation.
No
GO to F14.
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F11 CHECK FOR VOLTAGE TO THE LIFTGATE GLASS LATCH
- Ignition OFF.
- Unlock the doors with the door lock control switch.
- NOTE: The SJB only supplies voltage to the liftgate glass latch momentarily. It is important to monitor the meter while pressing the liftgate glass release switch.
- While pressing the liftgate glass release switch, measure the voltage between the liftgate glass latch C4040-4, circuit CPL59 (BN/BU), harness side and ground.
- Is the voltage momentarily greater than 10 volts?
Yes
GO to F13.
No
GO to F12.
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F12 CHECK THE LIFTGATE GLASS LATCH OUTPUT CIRCUIT FOR AN OPEN
- Disconnect: SJB C2280d .
- Measure the resistance between the SJB C2280d-31, circuit CPL59 (BN/BU), harness side and the liftgate glass latch C4040-4, circuit CPL59 (BN/BU), harness side.
- Is the resistance less than 5 ohms?
Yes
GO to F14.
No
REPAIR circuit CPL59 (BN/BU) for an open. TEST the system for normal operation.
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F13 CHECK THE GROUND CIRCUIT TO THE LATCH FOR AN OPEN
- Disconnect: Negative Battery Cable .
- Measure the resistance between the liftgate glass latch C4040-3, circuit GD150 (BK/WH), harness side and ground.
- Is the resistance less than 5 ohms?
Yes
INSTALL a new liftgate window latch. REFER to Liftgate Latch - Window Liftgate Latch - Window. TEST the system for normal operation.
No
REPAIR circuit GD150 (BK/WH) for an open. TEST the system for normal operation.
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F14 CHECK FOR CORRECT SJB OPERATION
- Disconnect all the SJB connectors.
- Check for:
- corrosion
- damaged pins
- pushed-out pins
- Connect all the SJB connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new SJB. REFER to Body Control Systems. TEST the system for normal operation.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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