GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Venture 🢒 Body and Accessories 🢒 Entertainment 🢒 Speakers Inoperative - One or More

Step

Action

Value(s)

Yes

No

1

Inspect the vehicle for radio rear seat audio control.

Is the vehicle equipped with radio rear seat audio control?

--

Go to Step 11

Go to Step 2

2
  1. Turn the ignition switch to the OFF position.
  2. Disconnect the inoperative speaker.
  3. Use a J 39200 in order to measure the resistance of the speaker.

Is the resistance within the specified range?

4-15ohms

Go to Step 3

Go to Step 9

3
  1. Disconnect all of the radio connectors.
  2. Use the J 39200 in order to measure the resistance at the inoperative speaker connector from terminal A to ground.

Does the resistance match the specified value?

Infinite

Go to Step 4

Go to Step 5

4

Use the J 39200 in order to measure the resistance at the speaker connector from terminal B to ground.

Is the resistance infinite?

--

Go to Step 6

Go to Step 10

5

Repair a short to ground in the speaker return circuit.

Has the repair been made?

--

Go to Radio/Audio System Check

--

6
  1. Reconnect the speaker.
  2. Use the J 39200 in order to measure the resistance at the radio connector of the speaker FEED and RETURN circuit of the affected speaker.

Does the resistance measure between the specified values?

4-15ohms

Go to Step 7

Go to Step 8

7

Service the radio. Refer to Radio Replacement .

Has the repair been made?

--

Go to Radio/Audio System Check

--

8
  1. Inspect for faulty connections at the following locations:
    2. • The speaker
    • The in-line connectors
  2. If the connections are OK, repair the faulty connection or the open in the speaker FEED or RETURN circuit.

Has the repair been made?

--

Go to Radio/Audio System Check

--

9
  1. Test for a short to B+ in the speaker FEED or RETURN circuit.
  2. If the circuit is OK, replace the speaker.

Has the repair been made?

--

Go to Radio/Audio System Check

--

10

Repair the short to ground in the speaker FEED circuit.

Has the repair been made?

--

Go to Radio/Audio System Check

--

11

Inspect the liftgate speakers.

Are the liftgate speakers inoperative?

--

Go to Step 12

Go to Step 2

12
  1. Turn the ignition switch to the OFF position.
  2. Disconnect the inoperative speaker.
  3. Use the J 39200 in order to measure the resistance of the speaker.

Is the resistance within the specified range?

4-15ohms

Go to Step 13

Go to Step 9

13
  1. Disconnect the radio rear seat audio control connector.
  2. Use the J 39200 in order to measure the resistance at the inoperative speaker harness connector from terminal A to ground.

Is the resistance infinite?

--

Go to Step 14

Go to Step 5

14

Use the J 39200 in order to measure the resistance at the speaker connector from terminal B to ground.

Is the resistance infinite?

--

Go to Step 15

Go to Step 10

15
  1. Reconnect the speaker.
  2. Disconnect the radio.
  3. Use the J 39200 in order to measure the resistance at the radio rear seat audio control harness connector from the speaker RETURN IN circuit to ground.

Is the resistance infinite?

--

Go to Step 16

Go to Step 5

16

Use the J 39200 in order to measure the resistance at the radio rear seat audio control connector from the speaker FEED IN circuit to ground.

Is the resistance infinite?

--

Go to Step 18

Go to Step 10

17

Service the radio rear seat audio controller. Refer to Rear Seat Audio Control Replacement .

Has the repair been made?

--

Go to Radio/Audio System Check

--

18
  1. Reconnect the rear seat audio control connector to the rear seat audio controller.
  2. Use the J 39200 in order to measure the resistance at the radio connector FEED and RETURN circuit of the affected speaker.

Is the resistance within the specified range?

4-15ohms

Go to Step 7

Go to Step 19

19
  1. Disconnect the rear seat audio control connector.
  2. Use a J 35616-A jumper kit in order to jump the affected rear speaker FEED and RETURN circuits to the radio at the rear seat audio control connector.
  3. Use a J 39200 in order to measure the resistance at the radio connector FEED and RETURN circuits of the affected speaker.

Is the resistance within the specified range?

0-1ohms

Go to Step 20

Go to Step 8

20

Use a J 39200 in order to measure the resistance at the rear seat audio control connector FEED and RETURN circuits of the affected speaker.

Is the resistance within the specified range?

4-15ohms

Go to Step 21

Go to Step 8

21
  1. Test CKT 906 (radio rear seat audio control enable) for a short to voltage.
  2. If CKT 906 has no short to voltage, replace the rear seat audio controller. Refer to Rear Quarter Audio Control Replacement .

Has the repair been made?

--

System OK

--