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 and 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 and terminal 

(i122) No. 3 - 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 and terminal 

(i122) No. 8 - (i10) No. 11:

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 combination meter assembly. Ref. to INSTRUMENTATION/DRIVER INFO>COMBINATION METER .

No 

Replace MFD.