Left Front Speaker
Step
| Action
| Value(s)
| Yes
| No
|
1
|
- Disconnect the connector at the left front radio speaker.
- Connect a Digital Multimeter (DMM) between left front radio speaker
terminal A and terminal B.
- Measure the resistance.
Does the resistance measure within the specified range?
| 4-15 ohms
| Go to
Step 2
| Go to
Speaker Replacement
.
|
2
|
- Ensure that the speaker and connector terminals are not damaged
or corroded.
- Reconnect the connector at the left front radio speaker.
- Place the ignition switch in the ACCY position.
- Turn the radio on.
Does the speaker operate properly with clear sound?
| --
| Go to
Step 3
| Go to
Step 4
|
3
| Repair the left front radio speaker connector as necessary.
Is the speaker malfunction resolved?
| --
| System OK
| Go to
Step 4
|
4
|
- Disconnect the connector at the left front radio speaker.
- Disconnect the connector at the radio.
- Verify that no voltage is present on CKT 357 (BLU).
- Connect a DMM between radio connector terminal 12 for CKT 357
(BLU) and ground.
Does the DMM indicate continuity?
| --
| Go to
Step 5
| Go to
Step 6
|
5
|
- Locate and repair the short to ground on CKT 357 (BLU)
between the radio and the left front radio speaker.
- Test the speaker performance.
Has the short circuit damaged the radio speaker's output?
| --
| Go to
Radio Replacement
| Go to
Step 6
|
6
|
- Ensure that no voltage is present on CKT 358 (BLU/WHT).
- Connect a DMM between radio connector terminal 5 for CKT 358
(BLU/WHT) and ground.
Does the DMM indicate continuity?
| --
| Go to
Step 7
| Go to
Step 8
|
7
|
- Locate and repair the short to ground on CKT 358 (BLU/WHT)
between the radio and the left front radio speaker.
- Test the speaker performance.
Has the short circuit damaged the radio speaker's output?
| --
| Go to
Radio Replacement
| Go to
Step 8
|
8
|
- Reconnect the connector at the left front radio speaker.
- Connect an ohmmeter between radio connector terminal 5
for CKT 358 (BLU/WHT) and terminal 12 for CKT 357 (BLU).
- Measure the resistance.
Does the resistance measure within the specified range?
| 4-15 ohms
| Go to
Radio Replacement
| Go to
Step 9
|
9
| Locate and
repair the following conditions in CKT 357 (BLU) or CKT 358
(BLU/WHT) between the radio and the left front radio speaker:
- The open circuit
- The pinched lead wire
- The high contact resistance
Is the speaker malfunction resolved?
| --
| System OK
| --
|
Right Front Speaker
Step
| Action
| Value(s)
| Yes
| No
|
1
|
- Disconnect the connector at the right front radio speaker.
- Connect a Digital Multimeter (DMM) between right front radio speaker
terminal A and terminal B.
- Measure the resistance.
Does the resistance measure within the specified range?
| 4-15 ohms
| Go to
Step 2
| Go to
Speaker Replacement
|
2
|
- Ensure that the speaker and connector terminals are not damaged
or corroded.
- Reconnect the connector at the right front radio speaker.
- Place the ignition switch in the ACCY position.
- Turn the radio on.
Does the speaker operate properly with clear sound?
| --
| Go to
Step 3
| Go to
Step 4
|
3
| Repair the right front radio speaker connector as necessary.
Is the speaker malfunction resolved?
| --
| System OK
| Go to
Step 4
|
4
|
- Disconnect the connector at the right front radio speaker.
- Disconnect the connector at the radio.
- Verify that no voltage is present on CKT 155 (GRN) and
CKT 355 (GRN).
- Connect a DMM between radio connector terminal 13 for CKT 355
(GRN) and ground.
Does the DMM indicate continuity?
| --
| Go to
Step 5
| Go to
Step 6
|
5
|
- Locate and repair the short to ground on CKT 155 (GRN)
and CKT 355 (GRN) between the radio and the right front radio speaker.
- Test the speaker performance.
Has the short circuit damaged the radio speaker's output?
| --
| Go to
Radio Replacement
| Go to
Step 6
|
6
|
- Ensure that no voltage is present on CKT 156 (GRN/WHT)
and CKT 356 (GRN/WHT).
- Connect a DMM between radio connector terminal 6 for CKT 156
(GRN/WHT) and CKT 356 (GRN/WHT) and ground.
Does the DMM indicate continuity?
| --
| Go to
Step 7
| Go to
Step 8
|
7
|
- Locate and repair the short to ground on CKT 156 (GRN/WHT)
and CKT 356 (GRN/WHT) between the radio and the right front radio speaker.
- Test the speaker performance.
Has the short circuit damaged the radio speaker's output?
| --
| Go to
Radio Replacement
| Go to
Step 8
|
8
|
- Reconnect the connector at the right front radio speaker.
- Connect a DMM between radio connector terminal 13 for CKT 355
(GRN/WHT) and terminal 6 for CKT 356 (GRN).
- Measure the resistance.
Does the resistance measure within the specified range?
| 4-15 ohms
| Go to
Radio Replacement
| Go to
Step 9
|
9
| Locate and
repair the following conditions in CKT 355 (GRN) or CKT 356
(GRN/WHT) between the radio and the right front radio speaker:
- The open circuit
- The pinched lead wire
- The high contact resistance
Is the speaker malfunction resolved?
| --
| System OK
| --
|