Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the Powertrain On-Board Diagnostic (OBD) System Check performed? | -- | For the 4.3L engine, go to Powertrain On Board Diagnostic (OBD) System Check . For the 5.0L, the 5.7L, and the 7.4L engines, go to Powertrain On Board Diagnostic (OBD) System Check . For the 6.5L engine, go to Powertrain On Board Diagnostic (OBD) System Check | |
2 |
Does the resistance match the chart? | Refer to the Pressure Switch Assembly Resistance Table found in Electronic Component Description | ||
3 |
Was low resistance measured? | -- | ||
4 |
Was low resistance measured? | -- | ||
5 | Repair the short on the vehicle wiring harness. Refer to Electrical Diagnosis, Section 8. Is the repair complete? | -- | Verify the repair and exit from the table | -- |
6 | Replace the VCM. Refer to VCM Replacement, Section 6. Is the replacement complete? | -- | Verify the repair and exit from the table | -- |
7 | Does the resistance measure low when the chart indicates high? | -- | ||
8 |
Does the resistance indicate low? | -- | ||
9 | Recheck the resistance with the TFP VAL POSITION SW disconnected from the transmission internal wiring harness. Does the resistance go from low to high? | -- | -- | |
10 | Does the resistance measure high when the chart indicates low? | -- | -- | |
11 |
Is the resistance low: | -- | ||
12 | Replace the TFP VAL POSITION SW. Refer to TFP VAL POSITION SW Replacement. Is the replacement complete? | -- | Verify the repair and exit from the table | -- |
13 | Replace the internal transmission wiring harness. Refer to Internal Transmission Wiring Harness Replacement. Is the replacement complete? | -- | Verify the repair and exit from the table | -- |
