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Fault diagnosis, speedometer and odometer(MIU 1)

Fault diagnosis, speedometer and odometer (MIU 1)

Fault symptoms

Speedometer needle does not move. Odometer and trip odometer stationary.

Diagnostic procedure



1. Jack up LH rear wheel.


2. Unplug the main instrument display panel's three connectors and connect the ISAT scan tool test leads to pin 7 (14-pin connector) and ground, then select "TEST" followed by "PULSE". Spin the rear wheel by hand and check whether pulses are generated. About 30 Hz at 1 revolution per second. If pulses are generated, proceed to point 5.

3. If no pulses are generated, check the wiring by connecting a BOB to the ABS control module's connector. The main instrument display panel and ABS control module should not be connected.

4. Check for open circuit/shorting to ground between pin 7 (14-pin connector) of the main instrument display panel and pin 22 of the ABS control module.


If the wiring is OK, continue fault diagnosis as described in Service Manual 5 "Brakes".

5. Check the conductive foil on the back of the main instrument display panel by testing for an open circuit between pin 7 (14-pin connector) and the screw marked "SEN". If the conductive foil is intact and the fuel gauge does not work, the fault is probably in the gauge. The complete main instrument display panel will have to be changed.


If there is an open circuit in the conductive foil, change the foil.