For 1990-2009 cars

## Fuel Filler Door Release Inoperative Buick

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 |

1. Disconnect the fuel door release switch.
2. Connect a test lamp between fuel door release switch connector terminal A and ground.

Does the test lamp light?

--

Go to Step 2

Go to Step 3

2 |

1. Test the F/DR REL fuse.
2. If OK, repair the open or short to ground in CKT 740, ORN.

Is the symptom still present?

--

Go to Step 3

Go to Fuel Filler Door Release System Check

3 | Connect a test lamp between fuel door release switch connector terminal A and terminal B. Does the test lamp light? | -- | Go to Step 4 | Go to Step 5
4 |

1. Inspect for proper terminal contact at the fuel door release switch connector.
2. If OK, replace the fuel door release switch.

Is the symptom still present?

--

Go to Step 5

Go to Fuel Filler Door Release System Check

5 |

1. Disconnect the fuel door release actuator connector.
2. Connect a test lamp between actuator connector terminal B and ground.
3. Install the fuel door release switch.
4. Activate the switch.

Does the test lamp light?

--

Go to Step 6

Go to Step 7

6 |

1. Connect a test lamp between the fuel door release actuator terminals A and B.
2. Activate the fuel door release switch.

Does the test lamp light?

--

Go to Step 8

Go to Step 9

7 | Test for an open in CKT 79, PNK. Is the repair complete? | -- | Go to Fuel Filler Door Release System Check | --
8 |

1. Inspect for proper terminal contact at the fuel door release actuator connector.
2. If OK, replace the fuel door release actuator.

Is the repair complete?

--

Go to Fuel Filler Door Release System Check

--

9 |

1. Inspect ground G302 for proper terminal contact.
2. If OK, repair open in CKT 1050 (BLK).

Is the repair complete?

--

Go to Fuel Filler Door Release System Check

--

## Fuel Filler Door Release Inoperative Oldsmobile

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 |

1. Disconnect the release switch connector.
2. Connect a test lamp between release switch connector terminal A and ground.

Does the test lamp light?

--

Go to Step 3

Go to Step 2

2 |

1. Test the F/DR fuse.
2. Test for an open or short to ground in CKT 840, ORN.

Is the symptom still present?

--

Go to Step 3

Go to Fuel Filler Door Release System Check

3 | Connect a test lamp between release switch connector terminal A and terminal B. Does the test lamp light? | -- | Go to Step 4 | Go to Step 5
4 |

1. Inspect for proper terminal contact at the release switch connector.
2. If OK, replace release switch.

Is the symptom still present?

--

Go to Step 5

Go to Fuel Filler Door Release System Check

5 |

1. Disconnect the fuel door release actuator connector.
2. Connect a fused jumper between release switch connector terminal A and terminal B.
3. Connect a test lamp between actuator connector terminal B and ground.

Does the test lamp light?

--

Go to Step 6

Go to Step 7

6 |

1. Test for an open in CKT 1050, BLK.
2. Inspect ground G302 for proper terminal contact.
3. Inspect for proper terminal contact at the fuel door release actuator connector.
4. If OK, replace the fuel door release actuator.

Is the repair complete?

--

Go to Fuel Filler Door Release System Check

--

7 | Test for an open in CKT 79, PNK. Is the repair complete? | -- | Go to Fuel Filler Door Release System Check | --