Rear Hatch will not open
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Joined: Nov 2009
Posts: 87
Likes: 2
From: Missouri City Texas
Rear Hatch will not open
Hi Rocket Riders !!!!
I have a 2013 427 Vert and the rear hatch ( trunk ) failed to open . I tried the FOB and the button in the dash no clicking sound and it will not open. The key in the FOB did work and that is the only way I could get it open. Any ideas on next steps?
Thanks
I appreciate the vast knowledge and experience of the Corvette family
I have a 2013 427 Vert and the rear hatch ( trunk ) failed to open . I tried the FOB and the button in the dash no clicking sound and it will not open. The key in the FOB did work and that is the only way I could get it open. Any ideas on next steps?
Thanks
I appreciate the vast knowledge and experience of the Corvette family
Safety Car
Joined: Dec 2006
Posts: 4,589
Likes: 1,668
From: Pearland / Houston Tx
Trunk Release Inoperative (Coupe)
Circuit/System Testing
Trunk Release Inoperative from Interior Switch
Ignition OFF, disconnect the harness connector at the interior rear compartment lid release switch.
Test for less than 1.0 ohm of resistance between the ground circuit terminal A and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the scan tool trunk release switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal D for a short to ground. If the circuit tests normal, replace the BCM.
Install a 3-A fused jumper wire between the signal circuit terminal D and ground. Verify the scan tool Trunk Release Switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
If all circuits test normal, test or replace the interior rear compartment lid release switch.
Trunk Release Inoperative from Exterior Switch
Ignition OFF, disconnect the harness connector at the exterior rear compartment lid release switch.
Test for less than 1.0 ohm of resistance between the ground circuit terminal A and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the scan tool Exterior Rear Compartment Lid Release Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal B for a short to ground. If the circuit tests normal, replace the remote control door lock receiver (RCDLR).
Install a 3-A fused jumper wire between the signal circuit terminal B and ground. Verify the scan tool Exterior Rear Compartment Lid Release Switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the remote control door lock receiver (RCDLR).
If all circuits test normal, test or replace the exterior rear compartment lid release switch.
Trunk Release Inoperative from Key Switch
Ignition OFF, disconnect the harness connector at the rear compartment lid pull down actuator.
Test for less than 1.0 ohm of resistance between the ground circuit terminal F and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the scan tool Trunk Key Cylinder Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal E for a short to ground. If the circuit tests normal, replace the BCM.
Install a 3-A fused jumper wire between the signal circuit terminal E and ground. Verify the scan tool trunk key cylinder switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
If all circuits test normal, test or replace the rear compartment lid pull down actuator.
Trunk Release Inoperative from All Switches
Ignition OFF, disconnect the harness connector at the rear compartment lid pull down actuator.
Test for less than 1.0 ohm of resistance between the ground circuit terminal F and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal H and ground.
⇒ If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, test or replace the rear compartment lid pull down actuator.
Connect a test lamp between the control circuit terminal B and the B+ circuit terminal H.
Command the trunk release ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
⇒ If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the BCM.
⇒ If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
If all circuits test normal, test or replace the rear compartment lid pull down actuator.
Circuit/System Testing
Trunk Release Inoperative from Interior Switch
Ignition OFF, disconnect the harness connector at the interior rear compartment lid release switch.
Test for less than 1.0 ohm of resistance between the ground circuit terminal A and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the scan tool trunk release switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal D for a short to ground. If the circuit tests normal, replace the BCM.
Install a 3-A fused jumper wire between the signal circuit terminal D and ground. Verify the scan tool Trunk Release Switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
If all circuits test normal, test or replace the interior rear compartment lid release switch.
Trunk Release Inoperative from Exterior Switch
Ignition OFF, disconnect the harness connector at the exterior rear compartment lid release switch.
Test for less than 1.0 ohm of resistance between the ground circuit terminal A and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the scan tool Exterior Rear Compartment Lid Release Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal B for a short to ground. If the circuit tests normal, replace the remote control door lock receiver (RCDLR).
Install a 3-A fused jumper wire between the signal circuit terminal B and ground. Verify the scan tool Exterior Rear Compartment Lid Release Switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the remote control door lock receiver (RCDLR).
If all circuits test normal, test or replace the exterior rear compartment lid release switch.
Trunk Release Inoperative from Key Switch
Ignition OFF, disconnect the harness connector at the rear compartment lid pull down actuator.
Test for less than 1.0 ohm of resistance between the ground circuit terminal F and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the scan tool Trunk Key Cylinder Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal E for a short to ground. If the circuit tests normal, replace the BCM.
Install a 3-A fused jumper wire between the signal circuit terminal E and ground. Verify the scan tool trunk key cylinder switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
If all circuits test normal, test or replace the rear compartment lid pull down actuator.
Trunk Release Inoperative from All Switches
Ignition OFF, disconnect the harness connector at the rear compartment lid pull down actuator.
Test for less than 1.0 ohm of resistance between the ground circuit terminal F and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal H and ground.
⇒ If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, test or replace the rear compartment lid pull down actuator.
Connect a test lamp between the control circuit terminal B and the B+ circuit terminal H.
Command the trunk release ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
⇒ If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the BCM.
⇒ If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
If all circuits test normal, test or replace the rear compartment lid pull down actuator.
Safety Car
Joined: Dec 2006
Posts: 4,589
Likes: 1,668
From: Pearland / Houston Tx
oops....you gotta vert
Trunk Release Inoperative (Convertible)
Circuit/System Testing
Trunk Release Inoperative from Interior Switch
Ignition OFF, disconnect the harness connector at the interior rear compartment lid release switch.
Test for less than 1.0 ohm of resistance between the ground circuit terminal A and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the scan tool Trunk Release Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal D for a short to ground. If the circuit tests normal, replace the BCM.
Install a 3-A fused jumper wire between the signal circuit terminal D and ground. Verify the scan tool trunk release switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
If all circuits test normal, test or replace the interior rear compartment lid release switch.
Trunk Release Inoperative from Exterior Switch
Ignition OFF, disconnect the harness connector at the exterior rear compartment lid release switch.
Test for less than 1.0 ohm of resistance between the ground circuit terminal A and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the scan tool Exterior Rear Compartment Lid Release Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal B for a short to ground. If the circuit tests normal, replace the remote control door lock receiver (RCDLR).
Install a 3-A fused jumper wire between the signal circuit terminal B and ground. Verify the scan tool Exterior Rear Compartment Lid Release Switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the remote control door lock receiver (RCDLR).
If all circuits test normal, test or replace the exterior rear compartment lid release switch.
Trunk Release Inoperative from Key Switch
Ignition OFF, disconnect the harness connector at the rear compartment lid key switch.
Test for less than 1.0 ohm of resistance between the ground circuit terminal 2 and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the scan tool Trunk Key Cylinder Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal 1 for a short to ground. If the circuit tests normal, replace the BCM.
Install a 3-A fused jumper wire between the signal circuit terminal 1 and ground. Verify the scan tool Trunk Key Cylinder Switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
If all circuits test normal, test or replace the rear compartment lid key switch.
Trunk Release Inoperative from All Switches
Ignition OFF, disconnect the trunk release relay.
Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal D9 and ground.
⇒ If the test lamp illuminates, test the control circuit for a short to voltage.
Verify that a test lamp illuminates between the B+ circuit terminal C7 and ground.
⇒ If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, test the control circuit terminal D9 for a short to ground. If the circuit tests normal, test or replace the trunk release relay.
Verify that a test lamp illuminates between the B+ circuit terminal D7 and ground.
⇒ If the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
Disconnect the harness connector at the rear compartment lid latch assembly.
Test for less than 1.0 ohm of resistance between the rear compartment lid latch assembly ground circuit terminal E and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Connect the harness connector at the rear compartment lid latch assembly.
Connect a 15-A fused jumper wire between the B+ circuit terminal C7 and the control circuit terminal D9. Verify the rear compartment lid latch motor is activated.
⇒ If the rear compartment lid latch motor does not activate, test the control circuit for an open/high resistance. If the circuit tests normal, test or replace the rear compartment lid latch assembly.
Connect a test lamp between the B+ circuit terminal D7 and the control circuit terminal C9.
Command the trunk release ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
⇒ If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the BCM.
⇒ If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
If all circuits test normal, test or replace the trunk release relay.
Trunk Release Inoperative (Convertible)
Circuit/System Testing
Trunk Release Inoperative from Interior Switch
Ignition OFF, disconnect the harness connector at the interior rear compartment lid release switch.
Test for less than 1.0 ohm of resistance between the ground circuit terminal A and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the scan tool Trunk Release Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal D for a short to ground. If the circuit tests normal, replace the BCM.
Install a 3-A fused jumper wire between the signal circuit terminal D and ground. Verify the scan tool trunk release switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
If all circuits test normal, test or replace the interior rear compartment lid release switch.
Trunk Release Inoperative from Exterior Switch
Ignition OFF, disconnect the harness connector at the exterior rear compartment lid release switch.
Test for less than 1.0 ohm of resistance between the ground circuit terminal A and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the scan tool Exterior Rear Compartment Lid Release Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal B for a short to ground. If the circuit tests normal, replace the remote control door lock receiver (RCDLR).
Install a 3-A fused jumper wire between the signal circuit terminal B and ground. Verify the scan tool Exterior Rear Compartment Lid Release Switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the remote control door lock receiver (RCDLR).
If all circuits test normal, test or replace the exterior rear compartment lid release switch.
Trunk Release Inoperative from Key Switch
Ignition OFF, disconnect the harness connector at the rear compartment lid key switch.
Test for less than 1.0 ohm of resistance between the ground circuit terminal 2 and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Ignition ON, verify the scan tool Trunk Key Cylinder Switch parameter is INACTIVE.
⇒ If not the specified value, test the signal circuit terminal 1 for a short to ground. If the circuit tests normal, replace the BCM.
Install a 3-A fused jumper wire between the signal circuit terminal 1 and ground. Verify the scan tool Trunk Key Cylinder Switch parameter is ACTIVE.
⇒ If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
If all circuits test normal, test or replace the rear compartment lid key switch.
Trunk Release Inoperative from All Switches
Ignition OFF, disconnect the trunk release relay.
Ignition ON, verify that a test lamp does not illuminate between the control circuit terminal D9 and ground.
⇒ If the test lamp illuminates, test the control circuit for a short to voltage.
Verify that a test lamp illuminates between the B+ circuit terminal C7 and ground.
⇒ If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, test the control circuit terminal D9 for a short to ground. If the circuit tests normal, test or replace the trunk release relay.
Verify that a test lamp illuminates between the B+ circuit terminal D7 and ground.
⇒ If the test lamp does not illuminate, test the B+ circuit for an open/high resistance.
Disconnect the harness connector at the rear compartment lid latch assembly.
Test for less than 1.0 ohm of resistance between the rear compartment lid latch assembly ground circuit terminal E and ground.
⇒ If greater than the specified range, test the ground circuit for an open/high resistance.
Connect the harness connector at the rear compartment lid latch assembly.
Connect a 15-A fused jumper wire between the B+ circuit terminal C7 and the control circuit terminal D9. Verify the rear compartment lid latch motor is activated.
⇒ If the rear compartment lid latch motor does not activate, test the control circuit for an open/high resistance. If the circuit tests normal, test or replace the rear compartment lid latch assembly.
Connect a test lamp between the B+ circuit terminal D7 and the control circuit terminal C9.
Command the trunk release ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
⇒ If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the BCM.
⇒ If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
If all circuits test normal, test or replace the trunk release relay.
