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CENTRE DISPLAY CHASSIS ELECTRICAL 54A-151 YES : The procedure is complete. NO : Go to Step 1. Code No.U1120 Failures Information on engine-ECU <M/T> or engine-A/T-ECU <A/T> (Related to CAUTION If diagnosis code U1120 is set in the centre TROUBLE JUDGMENT The centre display receives the vehicle speed signal COMMENTS ON TROUBLE SYMPTOM Current trouble • The combination meter or the centre display may be defective. Past trouble • Carry out diagnosis with particular emphasis on connector(s) or wiring harness between the POSSIBLE CAUSES • Damaged harness wires and connectors • Malfunction of engine-ECU <M/T> or engine-A/T-ECU <A/T> • Malfunction of centre display unit DIAGNOSTIC PROCEDURE Step 1. MUT-III CAN bus diagnostics Q: Is the check result satisfactory? YES : Go to Step 2. NO : Repair the CAN bus lines (Refer to GROUP − Can Bus Diagnostics ). Repair the CAN bus line and go to Step 6. Step 2. MUT-III other system diagnosis code Q: Is the diagnosis code set? YES : Diagnose the combination meter. (Refer to NO : Go to Step 3. Step 3. MUT-III other system diagnosis code • Code No.U1120: Failure information on engine-ECU <M/T> or engine-A/T-ECU <A/T> A/C-ECU • Code No.U1120: Failure information on engine-ECU <M/T> or engine-A/T-ECU <A/T> Q: Is the diagnosis code set? YES : Go to Step 4. NO : Go to Step 5. Step 4. Check whether the diagnosis code is Q: Is the check result satisfactory? YES : Replace centre display and then go to step NO : Go to Step 5. Step 5. Check whether the diagnosis code is |