(2) Check the circuit as shown in Fig. 4-23.
Fig. 4-23
5. Water thermometer fault
(1) Check steps
1) Check the coolant temperature sensor.
Disconnect the harness connector of engine coolant temperature sensor when the coolant
temperature is at 90 , ℃ the resistance between the signal wire terminal of coolant temperature
sensor and the body should be around 75～98Ω.
If it is in a normal condition, go to step 2), if not, change the coolant temperature sensor.
2) Check the wiring and connector between the instrument cluster and the coolant temperature
sensor.
Disconnect the harness connector of instrument cluster, the harness connector of engine ①
coolant temperature sensor remains disconnected.
② Check the impedance between the harness terminal of instrument cluster foot A24 and engine
ECM harness foot 65, normally less than 1Ω.
Measure the impedance between the instrument cluster③ foot A24 and the body, normally more
than 100KΩ.
If it is in a normal condition, replace the instrument cluster, if not, repair or change the wire and
connector.
(2) Check the circuit as shown in Fig. 4-24.
Fig. 4-24
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