Fuel Filler Door Release Malfunction (without Theft Deterrent System)
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Fuel Filler Door Release Malfunction (without Theft Deterrent System)
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Diagnostic Fault Information
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Circuit
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Short to Ground
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Open/High Resistance
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Short to Voltage
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Signal Performance
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Driver Door Unlock Signal
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B3130 02
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1
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1
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-
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Door Lock Signal
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B3135 02
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1
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1
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-
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1. Fuel Door Unlatch Malfunction
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Circuit/System Description
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The locking and unlocking of the fuel door is a function of the power door lock system. The fuel door unlatch actuator shares the circuit with the driver door latch. The body control module (BCM), upon receipt of a lock switch lock or unlock signal, will switch the appropriate door latch, as well as a fuel filler door unlatch actuator control circuits to B+ voltage. The opposing side of the door latch and fuel filler door unlatch actuator is connected to ground provided by the BCM through the other the door latch control circuits, along with the fuel filler door unlatch actuator, will lock or unlock as commanded.
Schematic Reference
Release Systems Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
Fuel Fill Door Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References
for information on diagnostic tools
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Circuit/System Verification
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Observe the operation of the power door locks and fuel filler door while using the power door lock switch. The fuel filler door should Lock and Unlock as commanded along with the door locks.
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1.
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Ignition OFF, disconnect the harness connector at the M27 Fuel Door Unlatch Actuator.
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2.
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Connect a test lamp between the control circuit terminals 1 and 2.
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3.
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Command the power door locks to Lock and Unlock using the power door lock switch. The test lamp should illuminate briefly for each command.
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4.
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If the test lamp does not illuminate, test the control circuits for an open circuit/high resistance. If the circuits test normal, test or replace the M27 Fuel Door Unlatch Actuator.
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Fuel Door Unlatch Actuator Test
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1.
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Ignition OFF, disconnect the harness connector at the M27 Fuel Door Unlatch Actuator.
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2.
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Connect a bridging connector, protected with a 25 amp fuse, between the locking control terminal 2 and 12 V. Briefly make and break a connection between control terminal 1 and ground. The M27 fuel filler cap release actuator should lock and unlock.
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3.
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If the function does not perform as specified, replace the M27 Fuel Door Unlatch Actuator.
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4.
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Reverse the jumper wires; the M27 Fuel Door Unlatch Actuator should perform the Unlock/Lock function.
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5.
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If the function does not perform as specified, replace the M27 Fuel Door Unlatch Actuator.
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Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
