CHASSIS ELECTRICAL ± Multi-Center Display <High Grade>
54A-102
INSPECTION PROCEDURE 7
Abnormal driving data displays.
D Abnormal average fuel consumption (momentary fuel consumption) and average speed displays.
D Abnormal cruising distance displays.
1. When average fuel consumption (momentary fuel consumption) and average speed displays
are abnormal.
OK
YES
NO
Check connectors: C-02 <L.H. drive
vehicles>, C-52, C-74, C-76
NG
Repair
OK
Carry out a wiring and communication
check (service function).
Does the message ªEngine-ECU not
connectedº appear?
End (no abnormality).
Check the connections between the
multi-center display and the engine-
ECU.
Replace the multi-center display.
NG
Check the harness between the multi-
center display and the engine-ECU,
and replace if necessary.
NG
YES
Carry out a vehicle signals check (ser-
vice function).
Does the message ªKey position : IGº
appear?
Check the harness between multi-cen-
ter display and the junction block, and
replace if necessary.
OK
Replace the multi-center display.
Measure at the multi-center display
connector C-52.
D Connector disconnected.
D Voltage between terminal (36) and
body earth
OK: Ignition switch ON:
System voltage.
Ignition switch OFF: 0 ± 1 V
NO
2. When cruising distance display is abnormal.
YES
NO
Carry out troubleshooting according to
procedure 1.
Replace the multi-center display.
OK
OK
YES
Check the harness between multi-cen-
ter display and the fuel gauge unit, and
replace if necessary.
NG
Replace the fuel gauge unit.
Check the fuel gauge unit.
(Refer to P.54A-25.)
NG
Are the average fuel consumption and
average vehicle speed displayed nor-
mally?
Select correct model, and repeat wiring
check.
Is the selected model is correct?
NO
Measure at the multi-center display
connector C-52.
D Connector disconnected.
D Voltage between terminal (33) and
body earth
OK: 0.1 ± 3.0 V
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