For 1990-2009 cars

## Radio Display Inoperative, No Sound from Speakers Oldsmobile

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Radio/Audio System Check? | -- | Go to Step 2 | Go to Radio/Audio System Check
2 |

1. Disconnect the radio connector.
2. Turn the ignition switch to the RUN position.
3. Measure the voltage from the radio connector terminal F1 to ground.

Is the voltage within the specified range?

10-15 V

Go to Step 3

Go to Step 4

3 | Measure the voltage from the radio connector terminal F1 to E16. Is the voltage within the specified range? | 10-15 V | Go to Step 5 | Go to Step 6
4 | Repair the open or short to ground in CKT 40 (ORN). Did you complete the repair? | -- | Go to Radio/Audio System Check | --
5 | Measure the voltage from the radio connector terminal F2 to E16. Is the voltage within the specified range? | 10-15 V | Go to Step 7 | Go to Step 8
6 | Repair the open in CKT 1250 (BLK). Did you complete the repair? | -- | Go to Radio/Audio System Check | --
7 | Replace the radio. Refer to Radio Replacement . Did you complete the repair? | -- | Go to Radio/Audio System Check | --
8 | Repair the open or short to ground in CKT 43 (YEL). Did you complete the repair? | -- | Go to Radio/Audio System Check | --

## Radio Display Inoperative, No Sound from Speakers Pontiac

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Radio/Audio System Check? | -- | Go to Step 2 | Go to Radio/Audio System Check
2 |

1. Disconnect the radio connector C1.
2. Turn the ignition switch to the RUN position.
3. Measure the voltage from the radio connector C1 terminal 10 to ground.

Is the voltage within the specified range?

10-15 V

Go to Step 3

Go to Step 4

3 | Measure the voltage from the radio connector C1 terminal 10 to 5. Is the voltage within the specified range? | 10-15 V | Go to Step 6 | Go to Step 7
4 | Repair the open or short to ground in CKT 40 (ORN). Did you complete the repair? | -- | Go to Radio/Audio System Check | --
5 |

1. Disconnect the radio connector C1.
2. Measure the voltage from the radio connector C1 terminal 10 to the radio connector C2 terminal 11.

Is the voltage within the specified range?

10-15 V

Go to Step 8

Go to Step 7

6 | Is the vehicle equipped with UZ8? | -- | Go to Step 5 | Go to Step 8
7 | Repair the open in CKT 1250 (BLK). Did you complete the repair? | -- | Go to Radio/Audio System Check | --
8 | Measure the voltage from the radio connector C1 terminal 5 to 9. Is the voltage within the specified range? | 10-15 V | Go to Step 9 | Go to Step 10
9 | Replace the radio. Refer to Radio Replacement . Did you complete the repair? | -- | Go to Radio/Audio System Check | --
10 | Repair the open or short to ground in CKT 43 (YEL). Did you complete the repair? | -- | Go to Radio/Audio System Check | --

## Radio Display Inoperative, No Sound from Speakers Buick

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Did you perform the Radio/Audio System Check? | -- | Go to Step 2 | Go to Radio/Audio System Check
2 |

1. Disconnect the radio connector.
2. Turn the ignition switch to the RUN position.
3. Measure the voltage from the radio connector terminal F1 to ground.

Is the voltage within the specified range?

10-15 V

Go to Step 4

Go to Step 3

3 | Repair the open or short to ground in CKT 40 (ORN). Did you complete the repair? | -- | Go to Radio/Audio System Check | --
4 | Measure the voltage from the radio connector terminal F1 to E16. Is the voltage within the specified range? | 10-15 V | Go to Step 6 | Go to Step 5
5 | Repair the open in CKT 1250 (BLK). Did you complete the repair? | -- | Go to Radio/Audio System Check | --
6 | Measure the voltage from the radio connector terminal F1 to F8. Is the voltage within the specified range? | 10-15 V | Go to Step 7 | Go to Step 5
7 | Measure the voltage from the radio connector terminal F8 to F2. Is the voltage within the specified range? | 10-15 V | Go to Step 9 | Go to Step 8
8 | Repair the open or short to ground in CKT 43 (YEL). Did you complete the repair? | -- | Go to Radio/Audio System Check | --
9 | Replace the radio. Refer to Radio Replacement . Did you complete the repair? | -- | Go to Radio/Audio System Check | --