Contents: Examination ⇓ Replacement ⇓
Caution! Do not start this operation until the engine has cooled down completely.
Examination
1. If the coolant temperature indicator on the instrument panel does not work, first check the fuse (see chapter 12).
2. If the instrument shows a high temperature after the engine has been running for a short time, please refer to Troubleshooting at the beginning of this Guide.
3. If the device shows a high temperature immediately after starting a cold engine, disconnect the connector from the temperature sensor in the engine compartment (figure 8.3.a, b). If the indicator reading becomes zero, replace the sensor with a new one. If the indicator reading has not changed, the cause of the malfunction is probably a short circuit in the temperature indicator circuit or a malfunction of the indicator itself.
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4. If the temperature indicator reading does not change within 10 minutes after starting the engine and the fuse is good, turn off the engine. Disconnect the connector from the temperature sensor and use a jumper to connect the sensor output to the engine housing. Turn on the ignition briefly, do not start the engine. If the indicator shows a high temperature, replace the sensor.
Replacement
5. Drain the cooling system (see chapter 1).
6. Disconnect the connector from the temperature sensor.
7. Unscrew the sensor.
8. Screw in the new sensor and tighten it securely. Do not use thread sealant as this may compromise the sensor's grounding. Connect the connector.
9. Fill with coolant and check for leaks and correct indicator readings.