Power Will Not Turn On. Illumination Does Not Light
Probable cause :
Power supply circuit malfunction, unit body malfunction
Wiring diagram :
Combination meter system Ref. to WIRING SYSTEM>COMBINATION METER SYSTEM>WIRING DIAGRAM .
- BASIC INSPECTION
.
Before performing the diagnosis, perform basic inspection. Ref. to COMBINATION METER (DIAGNOSTICS)>GENERAL DESCRIPTION>INSPECTION .
NOTE:- Check the battery and its installation condition.
- Check the related fuse.
- Visually check that the related connectors are properly connected.
Also, check the related ground terminal for looseness and corrosion.
Is the check result OK?
Yes : GO TO 2.
No : Repair the defective part.
- CHECK FUSE
.
Check the fuse for the combination meter. Ref. to WIRING SYSTEM>COMBINATION METER SYSTEM>WIRING DIAGRAM .
Is the check result OK?
Yes : GO TO 3.
No : Replace the fuse. If the fuse is blown again, check or replace the short circuit of the power supply harness.
After replacement, GO TO 7.
- CHECK CONNECTOR
.
Check if the connector is connected to the combination meter and there is poor contact in the connector.
Is the check result OK?
Yes : GO TO 4.
No : Engage the connector properly, or repair the faulty portion and check the operation.
After the repair, GO TO 7.
- CHECK POWER SUPPLY CIRCUIT
.
- Disconnect the connector from the combination meter.
- Turn the ignition switch to ON.
- Use a tester to measure the voltage between the combination meter connector and chassis ground.
Connector & terminal
(i97) No. 1 (+) - Chassis ground (-) :
(i97) No. 2 (+) - Chassis ground (-) :
Is the voltage 10 - 16 V?
Yes : GO TO 6.
No : GO TO 5.
- CHECK POWER SUPPLY CIRCUIT
.
Use a tester to measure the resistance between the combination meter connector and F/B.
Connector & terminal
(i97) No. 1 - F/B fuse No. 37 :
(i97) No. 2 - F/B fuse No. 6 :
Is the resistance less than 1 Ω?
Yes : Check the battery and the circuit between the battery and fuse.
After the repair, GO TO 7.
No : Repair or replace the open circuit of harness.
After the repair, GO TO 7.
- CHECK GROUND CIRCUIT
.
Use a tester to measure the resistance between the combination meter connector and ground.
Connector & terminal
(i97) No. 40 - Chassis ground :
Is the resistance less than 1 Ω?
Yes : Replace the combination meter. Ref. to INSTRUMENTATION/DRIVER INFO>COMBINATION METER .
After replacement, GO TO 7.
No : Repair or replace the open circuit of harness.
After the repair, GO TO 7.
- CHECK REPAIR
.
Perform operation check to check if the trouble has been solved.
Is the check result OK?
Yes : Finish the diagnosis.
No : Perform the diagnosis according to the basic diagnostic procedure. Ref. to COMBINATION METER (DIAGNOSTICS)>BASIC DIAGNOSTIC PROCEDURE>PROCEDURE .