Cruise Control Inoperative for Chevrolet Chevy P42 Commercial Chassis 1997
Cruise Control Inoperative P72 When Switch is On
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Is the 20A ALT fuse blown? | -- | Go to Step 2 | Go to Step 3 |
2 | Check for a short circuit. Repair if necessary and replace the fuse. Is the repair complete? | -- | System OK | -- |
3 |
Does the test lamp illuminate? | -- | Go to Step 5 | Go to Step 4 |
4 | Locate and repair the open PNK/BLK (39) wire. Is the repair complete? | -- | System OK | -- |
5 |
Does the test lamp illuminate? | -- | Go to Step 7 | Go to Step 8 |
6 | Replace the cruise control switch. Is the repair complete? | -- | System OK | -- |
7 |
Does the test lamp illuminate? | -- | Go to Does Not Operate with "Set" Switch Depressed | Go to Step 8 |
8 | Locate and repair the open GRA (397) wire between the PCM and the cruise control switch. Is the repair complete? | -- | System OK | -- |
Cruise Control Inoperative P72With Set Switch Depressed
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Refer to Cruise Control Inoperative When Switch Is "ON" before using this table. Is the other table completed? | -- | Go to Step 2 | Go to other table first |
2 |
Does the test lamp illuminate? | -- | Go to Step 4 | Go to Step 3 |
3 | Locate and repair the open in the PNK/BLK (39) wire. Is the repair complete? | -- | System OK | -- |
4 |
Does the test lamp illuminate? | -- | Go to Step 6 | Go to Step 5 |
5 | Replace the cruise control switch. Is the repair complete? | -- | System OK | -- |
6 |
Does the test lamp illuminate? | -- | Go to Step 8 | Go to Step 7 |
7 | Locate and repair the open DK BLU (84) wire between the cruise control switch and the PCM. Is the repair complete? | -- | System OK | -- |
8 | Replace the PCM. Is the repair complete? | -- | System OK | -- |
Cruise Control Inoperative P92 When Switch is On
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 |
Does the test lamp illuminate? | -- | Go to Step 3 | Go to Step 2 |
2 | Locate and repair the open RED (274) wire. Is the repair complete? | -- | System OK | -- |
3 |
Does the test lamp illuminate? | -- | Go to Step 5 | Go to Step 4 |
4 | Replace the cruise control switch. Is the repair complete? | -- | System OK | -- |
5 |
Does the test lamp illuminate? | -- | Go to Does Not Operate with Set/Accel Switch Depressed | Go to Step 6 |
6 | Locate and repair the open GRN (276) wire between the PCM and the cruise control switch. Is the repair complete? | -- | System OK | -- |
