Group 30: Electrical system Malfunctions
25
Measurements
Check MDI output for coolant
temperature sensor
Special tools: Multimeter 9812519,
Adapter cable 88890016, Measurebox 9998699
1. NOTE! Cut the current with the main switch.
2. Connect adapter cable 88890016 with measure-
box 9998699 between the MDI and the engine
connector.
3. Use multimeter 9812519 for voltage measure-
ment.
4. Disconnect the coolant temperature sensor con-
nector at the coolant temperature sensor.
5. Turn the main switch on and press the on button
on the button panel.
Measurement points Nominal value
16 (battery neg.) – U ≈5V
20 (coolant temp. sensor)
6. Reconnect the coolant temperature sensor con-
nector at the coolant temperature sensor.
Measurement points Nominal value
16 (battery neg.) – U ≈ 2-3V at +20°C
20 (coolant temp. sensor)
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