Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Is the low coolant warning indicator on with the coolant level OK? | -- | Go to Step 3 | Go to Step 2 |
2 | Does the low coolant warning indicator remain off when the coolant level is low? | -- | Go to Step 8 | System OK |
3 |
Is the low coolant warning indicator on? | -- | Go to Step 5 | Go to Step 4 |
4 | Replace the engine coolant level indicator module. Refer to Coolant Level Module Replacement (RPO LX5) or Coolant Level Module Replacement (RPO L36) in Engine Cooling. Is the repair complete? | -- | Go to Step 18 | -- |
5 |
Is the measured resistance same as the specified value? | ∞ | Go to Step 7 | Go to Step 6 |
6 | Repair short to ground in circuit 68. Is the repair complete? | -- | Go to Step 18 | -- |
7 | Replace the instrument cluster. Refer to Instrument Cluster Replacement for service procedure. Is the repair complete | -- | Go to Step 18 | -- |
8 |
Is the low coolant warning indicator on? | -- | Go to Step 9 | Go to Step 16 |
9 |
Is the low coolant warning indicator on? | -- | Go to Step 10 | Go to Step 11 |
10 | Replace the engine coolant level indicator module. Refer to Coolant Level Module Replacement (RPO LX5) or Coolant Level Module Replacement (RPO L36) in Engine Cooling. Is the repair complete? | -- | Go to Step 18 | -- |
11 |
Is there a poor connection or open in circuit 451? | -- | Go to Step 12 | Go to Step 13 |
12 | Repair poor connection or open in circuit 451. Is the repair complete? | -- | Go to Step 18 | -- |
13 | Check for a poor connection or open in circuit 451 between the engine coolant level indicator module harness connector terminal C and the underhood accessory wiring junction block harness connector C1 terminal B3. Is there a poor connection or open in circuit 451? | -- | Go to Step 14 | Go to Step 15 |
14 | Repair the poor connection or the open in circuit 451 between the engine coolant level indicator module harness connector terminal C and the underhood accessory wiring junction block harness connector C1 terminal B3. Is the repair complete? | -- | Go to Step 18 | -- |
15 | Replace the underhood accessory wiring junction block. Refer to Accessory Wiring Junction Block Replacement in Body Front End. Is the repair complete? | -- | Go to Step 18 | -- |
16 |
Is the measured resistance within the specified value? | Less than 3ohms | Go to Step 7 | Go to Step 17 |
17 | Repair poor connection or open in circuit 68. Is the repair complete? | -- | Go to Step 18 | -- |
18 |
Are there any instrument cluster DTCs present? | -- | System OK |
