Low Engine Coolant Indicator Always On
WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
Low Engine Coolant Indicator Always On
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Engine Cooling Schematics Connector End View Reference: Cooling System Connector End Views DEFINITION: The low coolant indicator is always on when the key is in the ON position. |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to DIAGNOSTIC SYSTEM CHECK - VEHICLE |
| 2 |
|
Go to Step 3 | Go to Step 5 |
| 3 | Disconnect the coolant level switch connector. Does the low coolant indicator turn OFF? |
Go to Step 6 | Go to Step 4 |
| 4 | Test the signal circuit of the coolant level switch for a short to voltage. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 11 | Go to Step 7 |
| 5 | Inspect for poor connections at the harness connector of the instrument panel cluster (IPC). Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
Go to Step 11 | Go to Step 8 |
| 6 | Inspect for poor connections at the harness connector of the coolant level switch. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
Go to Step 11 | Go to Step 9 |
| 7 | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
Go to Step 11 | Go to Step 10 |
| 8 | Replace the IPC. Refer to Instrument Cluster Replacement
. Did you complete the repair? |
Go to Step 11 | - |
| 9 | Replace the coolant level switch. Refer to Surge Tank Replacement . Did you complete the replacement? |
Go to Step 11 | - |
| 10 | Replace the BCM. Refer to Control Module References
for replacement, setup, and programming. Did you complete the replacement? |
Go to Step 11 | - |
| 11 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 2 |