Diagnostic steps of diesel temperature

Turbo Common rail injection
 
STEP
CHECKS TO BE CARRIED OUT
SOLUTION IF CHECK NOT OK
1
At operating temperature, with the engine idling and all the electrical supplies disabled, a value of between 10 and 80°C should be read.
The test may be considered concluded.
Proceed to Step 2
2
Turn the ignition key to the STOP position.
Disconnect the wiring harness connector from connector A of the engine management control unit.
Turn the key to the IGNITION-ON position.
Measure the voltage between Pin 13 (wiring side) of the control unit
and Ground, ensuring that it is less than 0.3 V.
Proceed to Step 4
Proceed to Step 3
3
Turn the ignition key to the STOP position.
Measure the resistance between Pin 13 (wiring side) of the control unit
and Ground, ensuring that it is greater than 500 kOhm
Proceed to Step 4
4
Disconnect the wiring harness connector from the fuel temperature sensor.
Measure the resistance between Pin 13 (wiring side) of the control unit
and Pin 1 (wiring side) of the sensor
ensuring that it is less than 5 Ohm
Restore, or if necessary replace, the electric wiring between the engine management control unit and the resistor
5
Measure the resistance between Pin 61 (wiring side) of the control unit
and Pin 2 (wiring side) of the sensor
ensuring that it is less than 5 Ohm
Restore, or if necessary replace, the electric wiring between the engine management control unit and the sensor
6
Replace the sensor
and ensure that the fault has been resolved
Restore the original resistor and replace the engine management control unit

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