Coolant Level Sensor: Testing and Inspection

LOW COOLANT LEVEL SENSOR

Diagnostic Chart:

Wiring Diagram:

DIAGNOSTIC AIDS

For diagnosis of the instrument panel, perform the System Check in Instrument Panel and Gauges / Testing and Inspection.

Check for the following conditions:

^ Poor connection at PCM or Coolant Level Indicator. Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection.

^ Damaged harness. Inspect the wiring harness for damage. If the harness appears to be OK, disconnect the PCM and turn the ignition ON.

Observe a voltmeter connected to the affected PCM circuit while moving connectors and wiring harnesses related to the PCM circuit. A change in voltage will indicate the location of the fault.


TEST DESCRIPTION

The numbers below refer to the step numbers on the Diagnostic Table:

10. Refer to Instrument Panel Cluster (IPC) Microprocessor for further diagnostics. This diagnostic only covers inputs to the PCM.

11. This vehicle is equipped with a PCM which utilizes an Electrically Erasable Programmable Read Only Memory (EEPROM). When the PCM is being replaced, the new PCM must be programmed. Refer to PCM Replacement/Programming.