Check Power Supply And Ground Circuit And Communication Circuit

1. Disconnect the MFD connector.
2. Measure the voltage between MFD connector and chassis ground.

   Connector & terminal 

   (i122) No. 1 (+) - Chassis ground (-):

Is the voltage 10 V or more?

Yes: Go to  2.

No: Check the harness for open or short between the fuse and MFD.

Measure the resistance between MFD connector and chassis ground.

Connector & terminal 

(i122) No. 2 - Chassis ground:

Is the resistance less than 10 Ω?

Yes: Go to  3.

No: Repair or replace the harness.

1. Disconnect the connector of combination meter assembly.
2. Check the harness between MFD and combination meter assembly.

   Connector & terminal 

   (i122) No. 9 - (i10) No. 28:

Is harness normal?

Yes: Go to  4.

No: Repair or replace the harness.

1. Remove the MFD.
2. Attach the clock to another vehicle on which the clock display operates normally, and check its operation.

Is MFD normal?

Yes: Replace the meter - main assembly. Ref. to INSTRUMENTATION/DRIVER INFO > Combination Meter .

No: Replace the MFD.