Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
|
Important: A short to ground will cause an open fuse(s). Before performing this diagnostic procedure, inspect the fuse(s) for an open. | ||||
1 | Was the Instrument Cluster Diagnostic System Check performed? | -- | ||
2 |
Is the Tach Signal reading active? | -- | ||
3 |
Does an AC voltage exist? | -- | ||
4 | Replace the instrument cluster. Refer to Instrument Cluster Replacement . Is the repair complete? | -- | -- | |
5 | Test for a short to ground in CKT 121. Was a short to ground found? | -- | ||
6 | Repair the short to ground in CKT 121. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
7 | Use the J 39200 DMM in order to measure the resistance in CKT 121. Does the resistance measure within the specified range? | 0-2 ohms | ||
8 | Repair the open in CKT 121. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
9 | Replace the powertrain control module (PCM). Refer to Powertrain Control Module Replacement/Programming in Engine Controls. Is the repair complete? | -- | -- | |
