Function test
- Connect diagnostic tester. Refer to Diagnostic tester, connecting .
- Switch ignition on.
- Under address word 33, select "Diagnostic mode 1: Checking measured values."
- Select the measuring value "PID 05: Coolant temperature".
- Check specified value of coolant temperature:
| PID | Diagnostic text | Specified value: | ||||
| 05: | Coolant temperature | approx. coolant temperature | ||||
If specified value is not obtained:
- End diagnosis and switch ignition off.
- Check wires according to wiring diagram. Refer to Checking wiring .
If specified value is obtained:
- Start engine and let run at idle.
- Check specified value of coolant temperature at idle:
| PID | Diagnostic text | Specified value: | ||||
| 05: | Coolant temperature | Temperature value must rise evenly | ||||
NOTE:
- The temperature increases in increments of 1.0 ° C.
- If the engine shows problems in certain temperature ranges and if the temperature does not climb uniformly, the temperature signal is intermittent and the sensor should be replaced.