Engine Coolant Temperature Gage Inaccurate or Inoperative Pontiac
Step | Action | Value(s) | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
1 | Did you perform the Instrument Cluster System Check? | -- | Go to Step 2 | |||||
2 |
Does the coolant temperature gauge indicate maximum, midscale, and minimum temperature? | -- | Go to Step 6 | Go to Step 3 | ||||
3 | Inspect one of the following circuits for an open or a short to ground:
Was a poor connection found? | -- | Go to Step 12 | Go to Step 7 | ||||
4 | Inspect the ECT sensor ground for an open. Repair as necessary. Is the ground OK? | -- | Go to Step 6 | -- | ||||
5 | Inspect the following terminals for proper terminal contact:
Was a poor connection found? | -- | Go to Step 7 | -- | ||||
6 | Inspect the ECT sensor connector for proper terminal contact. Is the contact OK? | -- | Go to Step 10 | Go to Step 13 | ||||
7 | Inspect connector C101 cavity B3 for proper terminal contact. Was a poor connection found? | -- | Go to Step 14 | Go to Step 8 | ||||
8 | Inspect connector C200 cavity A8 for proper terminal contact. Was a poor connection found? | -- | Go to Step 15 | Go to Step 9 | ||||
9 | Inspect one of the following terminals for proper terminal contact:
Was a poor connection found? | -- | Go to Step 16 | Go to Step 11 | ||||
10 | Inspect the ECT sensor connector for proper terminal contact. Was a poor connection found? | -- | Go to Step 13 | -- | ||||
11 | Replace the instrument cluster. Refer to the appropriate procedure: Did you complete the repair? | -- | -- | |||||
12 | Repair the open or the short to ground in one of the following circuits:
Did you complete the repair? | -- | -- | |||||
13 | Replace the engine coolant temperature sensor. Refer to Engine Coolant Temperature Sensor Replacement in Engine Controls. Did you complete the repair? | -- | -- | |||||
14 | Repair connector C101 cavity B3. Refer to Terminal Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |||||
15 | Repair connector C200 cavity A8. Refer to Terminal Repairs in Wiring Systems. Did you complete the repair? | -- | -- | |||||
16 | Repair the instrument cluster connector terminal cavity A9 (UB3 only) or cavity A11 (U50/U2F only). Refer to Terminal Repairs in Wiring Systems. Did you complete the repair? | -- | -- |
Engine Coolant Temperature Gage Inaccurate or Inoperative Buick
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Instrument Cluster System Check? | -- | Go to Step 2 | |
2 |
Does the coolant temperature gauge indicate maximum, midscale, and minimum temperature? | -- | Go to Step 4 | Go to Step 3 |
3 | Inspect CKT 36 (LT GRN) for an open or short to ground. Was there a problem with CKT 36? | -- | Go to Step 10 | Go to Step 9 |
4 | Inspect the ECT sensor connector for proper terminal contact. Was a poor connection found? | -- | Go to Step 12 | Go to Step 8 |
5 | Inspect connector C101 cavity B3 for proper terminal contact. Was a poor connection found? | -- | Go to Step 11 | Go to Step 6 |
6 | Inspect connector C200 cavity A8 for proper terminal contact. Was a poor connection found? | -- | Go to Step 11 | Go to Step 7 |
7 | Inspect the instrument cluster connector terminal cavity B11 for proper terminal contact. Was a poor connection found? | -- | Go to Step 11 | Go to Step 9 |
8 | Replace the engine coolant temperature sensor. Refer to Engine Coolant Temperature Sensor Replacement in Engine Cooling. Is the replacement complete? | -- | -- | |
9 | Replace the instrument cluster. Refer to the appropriate procedure: Is the replacement complete? | -- | -- | |
10 | Repair the open or short to ground in CKT 36 (LT GRN). Refer to Repairing Damaged Wire Insulation in Wiring Systems. Is the repair complete? | -- | -- | |
11 | Replace the instrument cluster connector terminal cavity B11. Refer to Terminal Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
12 | Repair poor connection. Is repair complete? | -- | -- |
