Tachometer Inoperative Gas
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the OBD II System Check been performed? | -- | Go to Step 2 | Go to Powertrain On Board Diagnostic (OBD) System Check (5.0L/5.7L); Powertrain On Board Diagnostic (OBD) System Check (7.4L) |
2 |
Is continuity present? | -- | Go to Step 3 | Go to Step 4 |
3 | Locate and repair the short to ground in CKT 121 (WHT) between the Ignition Coil and the I/P cluster. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
4 | Connect a J 39200 DMM (continuity) from I/P Cluster cavity 6 to ignition coil connector cavity B. Is continuity present? | -- | Go to Step 5 | Go to Step 6 |
5 | Replace the I/P Cluster. Refer to Instrument Cluster Replacement . Is the repair complete? | -- | -- | |
6 | Locate and repair the open in CKT 121 (WHT) between the Ignition Coil and the I/P Cluster. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- |
Tachometer Inoperative Diesel
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Instrument Cluster System Check? | -- | Go to Step 2 | |
2 |
Did the test lamp light? | -- | Go to Step 3 | Go to Step 4 |
3 | Locate and repair the short to ground in CKT 121 (WHT) between the generator and the instrument cluster. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 4 | |
4 | Connect a J 35616-200 test lamp between instrument cluster connector cavity 6 and generator connector cavity A. Did the test lamp light? | -- | Go to Step 5 | Go to Step 6 |
5 |
Is there voltage present? | 14 V | Go to Step 7 | Go to Step 8 |
6 | Locate and repair the open in CKT 121 (WHT) between the generator and the instrument cluster. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
7 | Replace the instrument cluster. Refer to Instrument Cluster Replacement . Is the repair complete? | -- | -- | |
8 | Replace the generator. Refer to Generator Replacement or Auxiliary Generator Replacement in Engine Electrical. Is the repair complete? | -- | -- |
