Trunk/hatch Release - Power — Cadillac Eldorado X (1992-2002)

DESCRIPTION & OPERATION

Fuel door can be opened by depressing fuel door release switch, located in glove box, or by manual release cable in trunk. Trunk lid can be opened by a trunk lid release switch mounted on instrument panel. Trunk lid release switch has a valet setting to disable trunk lid operation. Trunk lid may also be opened by Remote Function Actuator (RFA) module. RFA module receives signals electronically from Remote Keyless Entry (RKE) transmitter.

All models use a power trunk pull down system that pulls down and latches the trunk lid during the last 1" (25 mm) of travel. A combination latch/release mechanism is located in the trunk lid. A permanent magnet pull down actuator motor is located in the trunk. (Scheme 4)

When the trunk lid is closed, very light pressure is required to cause the latch to grab the extended striker on the motor. The motor will then run, taking the lid to its completely closed position. The key lock frame then depresses the plunger switch, breaking the circuit to the motor. The motor will then shut off.

Scheme 4

Scheme 4: DESCRIPTION & OPERATION

SYMPTOM TESTS

Note. Symptom tests are written specifically for use with GM Tech I or Tech II scan tools. Generic scan tool can be used but may have limited functions.

Note. On models with RKE system, check operation of all RKE transmitter functions. If RKE transmitter is malfunctioning, see KEYLESS ENTRY SYSTEM - REMOTE article.

Trunk Lid Opens With RKE Transmitter Only

Connect scan tool to Data Link Connector (DLC), located left of steering column on hood release bracket. Check if any DTCs exist. If DTCs exist, see «TESTS W/CODES»(/cadillac/eldorado/x-1992-2002/remont/testing-diagnostics/#engine-controls-tests-wcodes-46l) article in ENGINE PERFORMANCE section. If DTCs do not exist, go to next step.
Using scan tool, check trunk release switch input. If trunk release input is not received at Instrument Panel Cluster (IPC), go to next step. If trunk release switch input is received at IPC and trunk lid does not open, replace IPC. See «INSTRUMENT PANEL»(/cadillac/eldorado/x-1992-2002/remont/gauges-instrument-panels/#instrument-panel) article.
Disconnect Driver Information Center (DIC) connector (Eldorado and Seville) or headlight switch connector (Concours and DeVille). Connect test light between ground and headlight switch connector C1, terminal "J" (Black wire - Concours and DeVille) or DIC connector C1, terminal No. 11 (Black wire - Eldorado and Seville). On all models, if test light comes on, go to next step. If test light does not come on, check for open in Black wire. If Black wire is okay, replace IPC. See «INSTRUMENT PANEL»(/cadillac/eldorado/x-1992-2002/remont/gauges-instrument-panels/#instrument-panel) article.
On Concours and DeVille, connect test light between headlight switch connectors C1, terminal "J" (Black wire) and connector C2, terminal "E" (Black wire). On Eldorado and Seville, connector test light between DIC connector terminals No. 11 (Black wire) and 15 (Black/White wire).
On all models, if test light comes on, replace headlight switch (Concours and DeVille) or DIC (Eldorado and Seville). If test light does not come on, repair open in ground circuit (Black wire - Concours and DeVille) or (Black/White wire - Eldorado and Seville).

Trunk Release Inoperative

Place transmission into PARK. Connect scan tool to Data Link Connector (DLC), located left of steering column on hood release bracket. Ensure valet lockout switch is in OFF position. Press trunk release switch or trunk release on Remote Keyless Entry (RKE) transmitter. If Body Control Module (PZM) commands trunk lid release ON, go to step 3). If PZM does not command trunk lid release ON, check status of valet lockout switch with scan tool.
If PZM indicates valet lockout switch as OFF, replace PZM. If status does not indicate OFF, disconnect valet lockout switch. Using a fused jumper wire, jump valet lockout switch connector terminal "A" (Dark Blue/White wire) to ground. If scan tool indicates valet lockout input is OFF, replace valet lockout switch. If scan tool does not indicate valet switch input as OFF, check Dark Blue/White wire for open. If Dark Blue/White wire is okay, replace PZM.
Remove trunk lid release relay, located in trunk compartment electronics bay. Connect test light between ground and trunk release relay connector terminal D4 (Orange wire) and terminal D6 (Orange wire). If test light comes on at both terminals, go to next step. If test light does not come on at both terminals, repair open in Orange wire(s).
Connect test light between trunk release relay connector terminal D4 (Orange wire) and terminal C6 (Light Blue wire). Press trunk lid release switch or command trunk lid release open with scan tool. If test light comes on, go to next step. If test light does not come on, check Light Blue wire for an open. If Light Blue wire is okay, replace PZM. See «BODY CONTROL MODULE»(/cadillac/eldorado/x-1992-2002/remont/body-cab-control-systems/#body-control-module) article.
Connect fused jumper wire between trunk release relay connector terminal D6 (Orange wire) and terminal C4 (Black/White wire). If trunk lid does not open, go to next step. If trunk lid opens, replace trunk release relay.
Ensure fused jumper wire is still connected. Disconnect trunk release solenoid. Connect test light between trunk release solenoid connector terminal "A" (Black/White wire) and ground. If test light comes on, replace trunk release solenoid. If test light does not come on, repair open in Black/White wire between trunk release relay and trunk release solenoid.

TRUNK LID PULL DOWN OPERATION

Note. Refer to WIRING DIAGRAMS for terminal identification.

Check the following items for possible causes of system malfunctions before performing individual tests.

Ensure Trunk Lid Lock Securely Engages Striker
Faulty Fuses Or Circuit Breaker
Loose Or Corroded Connectors
Low Battery Charge
Poor Ground Connections
Linkage Disconnected, Binding Or Bent
Inoperative Lock Or Latch Mechanism

Striker Does Not Extend With Trunk Lid Unlatched

Disconnect trunk lid pull down actuator connector. Connect test light between trunk lid pull down actuator connector terminals "A" (Orange/Black wire) and "D" (Black wire). If test light does not come on, go to next step. If test light comes on, check trunk lid pull down actuator and connector for good terminal contact. If terminal contact is okay, replace trunk lid pull down actuator.
Connect test light between trunk lid pull down actuator connector terminal "A" (Orange/Black wire) and ground. If test light does not come on, go to next step. If test light comes on, check Black wire between trunk lid pull down actuator connector terminal "D" and ground for an open.
Check PULL DOWN (20-amp) fuse, located in trunk compartment fuse block. If fuse is okay, check Orange/Black wire between trunk lid pull down actuator connector and fuse block for an open. If fuse is open, replace fuse. If fuse opens again, check Orange/Black wire for a short to ground.

Striker Does Not Retract With Trunk Lid Closed

Disconnect trunk pull down actuator connector. Press and hold trunk lid latch switch. Connect test light between trunk lid pull down actuator connector terminals "A" (Orange/Black wire) and "B" (Red wire). If test light does not come on, go to step 4). If light comes on, check trunk lid pull down actuator connector is clean and tight. If okay, replace pull down motor.
Connect a test light between trunk lid pull down actuator connector terminal "A" (Orange/Black wire) and ground. If test light comes on, go to next step. If test light does not come on, check for an open or short in Orange/Black wire.
Close trunk. Open trunk. If light in trunk does not operate, go to next step. If light in trunk operates, check Red wire between trunk lid pull down actuator connector and trunk lid latch switch for an open. If okay, replace trunk lid latch switch.
Disconnect trunk lid latch switch connector. Connect test light between trunk lid latch switch connector terminal "B" (Black wire) and trunk lid pull down actuator connector "A" (Orange/Black wire). If test light does not come on, repair open in Black wire. If test light comes on, replace trunk lid latch switch.

Fuel Door Release Operates From RKE Transmitter Only

Connect scan tool to Data Link Connector (DLC), located left of steering column on hood release bracket. Check if any DTCs exist. If DTCs exist, see appropriate «TESTS W/CODES»(/cadillac/eldorado/x-1992-2002/remont/testing-diagnostics/#engine-controls-tests-wcodes-46l) article in ENGINE PERFORMANCE section. If DTCs do not exist, go to next step.
Press fuel door release switch. If switch input is not received at Instrument Panel Cluster (IPC), go to next step. If switch input is received at IPC, replace IPC. See «INSTRUMENT PANEL»(/cadillac/eldorado/x-1992-2002/remont/gauges-instrument-panels/#instrument-panel) article.
On Concours and DeVille, disconnect headlight switch, check for power at headlight switch connector C1 terminal "H" (Yellow wire). On Eldorado and Seville, disconnect Driver Information Center (DIC) connector, check for power at DIC connector terminal No. 10 (Yellow wire). On all models, if test light comes on, go to next step. If test light does not come on, check for an open in Yellow wire. If Yellow wire is okay, replace IPC. See «INSTRUMENT PANEL»(/cadillac/eldorado/x-1992-2002/remont/gauges-instrument-panels/#instrument-panel) article.
On Concours and DeVille, connect test light between headlight switch connector C1 terminal "H" (Yellow wire) and connector C2 terminal "E" (Black wire). On Eldorado and Seville, connect test light between DIC connector terminals No. 10 (Yellow wire) and No. 15 (Black/White wire). If test light comes on, replace headlight switch (Concours and DeVille) or DIC (Eldorado and Seville). If test light does not come on, repair open ground circuit in Black wire (Concours and DeVille) or Black/White wire (Eldorado and Seville).

Fuel Door Release Inoperative

Place transmission in Park. Ensure valet lockout switch is in OFF position. Connect scan tool to Data Link Connector (DLC), located left of steering column on hood release bracket. Check if any DTCs exist. If DTCs exist, see «TESTS W/CODES»(/cadillac/eldorado/x-1992-2002/remont/testing-diagnostics/#engine-controls-tests-wcodes-46l) article in ENGINE PERFORMANCE section. If DTCs do not exist, go to next step.
Press fuel door release switch. If Body Control Module (PZM) commands fuel door release ON, go to step 5). If PZM does not command fuel door release ON, check status of valet lockout input and Park Neutral Position (PNP) input with scan tool. If valet lockout input does not indicate OFF, go to next step. If valet lockout input is OFF, check PNP input. If PNP input indicates PARK, replace PZM. If PNP input does not indicate PARK, repair fault in PNP switch or circuit.
Disconnect valet lockout switch. Connect a fused jumper wire between valet lockout switch connector terminal "A" (Dark Blue/White wire) and ground. If scan tool indicates valet lockout input is OFF, go to next step. If valet lockout input does not indicate OFF, check valet switch connector Dark Blue/White wire for an open or short. If Dark Blue/White wire is okay, replace Body Control Module (PZM).
Check for an open in ground circuit of DIC connector Black/White wire (Eldorado and Seville) or headlight switch connector Black wire (Concours and DeVille). If ground circuit is okay, replace valet lockout switch.
Disconnect fuel door release relay, located in trunk compartment electronics bay. Connect test light between ground and fuel door release relay connector terminal D7 (Orange wire) and terminal D9 (Orange wire). If test light comes on at both terminals, go to next step. If test light does not come on at both terminals, repair open in Orange wire(s).
Connect test light between fuel door release relay connector terminal D7 (Orange wire) and terminal C9 (White wire). Press fuel door release switch or command fuel door release open with scan tool. If test light comes on, go to next step. If test light does not come on, check for an open in White wire. If White wire is okay, replace PZM.
Connect fused jumper wire between fuel door release relay connector terminal D9 (Orange wire) and terminal C7 (Pink wire). If fuel door does not open, go to next step. If fuel door opens, replace fuel door release relay.
Ensure fused jumper wire is still connected. Disconnect fuel door release solenoid. Connect test light between fuel door release solenoid connector terminal "A" (Pink wire) and ground. If test light does not come on, repair open circuit in Pink wire. If test light comes on, check Black wire (ground circuit) for an open. If Black ground wire is okay, replace fuel door release solenoid.

Removal & Installation

Remove switch trim cover or filler panel, if equipped. Gently pry switch mounting assembly from instrument panel or console. Disconnect electrical connector and remove switch. To install, reverse removal procedure.

Open trunk lid. Disconnect electrical connector from release solenoid. Remove solenoid attaching screws. Lift solenoid tab from notch in lock assembly and remove solenoid. To install, reverse removal procedure.

Open trunk lid. Disconnect pull-down motor electrical connector. (Scheme 4) Remove motor-to-mounting bracket bolts. Remove motor. To install, reverse removal procedure.

Remove luggage compartment trim panel. Remove nut retaining latch to fuel pocket. Remove grommet and latch assembly from wheelwell. Remove solenoid attaching bolts. Disconnect wiring connector and remove solenoid. To install, reverse removal procedure.

Power Trunk Release Wiring Diagram. Scheme 5

Scheme 5: Power Trunk Release Wiring Diagram

Power Fuel Filler Door Release Wiring Diagram. Scheme 6

Scheme 6: Power Fuel Filler Door Release Wiring Diagram

Power Trunk Pull-Down System Wiring Diagram. Scheme 7

Scheme 7: Power Trunk Pull-Down System Wiring Diagram

Trunk/hatch Release - Power Cadillac Eldorado X