9000 L4-1985cc 2.0L DOHC Turbo EFI (1987)
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
Checking the Temperature Sensor
Tools:
- Multimeter
- Breakout box 86 11 006
The LH control module connector should be unplugged.
1 Connect the Breakout Box. Take temperature sensor readings by connecting the multimeter's test prods for:
LH 2.2
to control module connector pins 2 and 11
LH 2.4, 2.4.1 and 2.4.2
to control module connector pins 5 and 13
2 If the readings obtained are not OK, unplug the temperature sensor connector.
Take temperature sensor readings again. If the readings are still not OK, change the temperature sensor.
3 An ISAT scan tool can be used on M1991- cars equipped with LH 2.4 and LH 2.4.2. Select command code 250. The temperature will be shown on
the ISAT scan tool display.
