1.CHECK COMBINATION METER.
1) Turn the ignition switch to ON. (engine OFF)
2) Check the warning light of combination meter.
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Does the warning light illuminate?
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Repair or replace the combination meter. 
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2.CHECK HARNESS CONNECTOR BETWEEN COMBINATION METER AND OIL PRESSURE SWITCH.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from oil pressure switch.
3) Turn the ignition switch to ON.
4) Measure the voltage between oil pressure switch connector and chassis ground.
Connector & terminal
(E11) (+) — Chassis ground (−):
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Is the voltage 10 V or more?
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Replace the oil pressure switch.
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3.CHECK COMBINATION METER.
1) Turn the ignition switch to OFF.
2) Remove the combination meter.
3) Measure the resistance of combination meter.
Terminal
(i10) No. 2 — (i10) No. 19:
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Is the resistance less than 10 Ω?
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Repair the harness and connector.
NOTE:
In this case, repair the following item:
• Open circuit of harness between combination meter and oil pressure switch
• Poor contact of combination meter connector
• Poor contact of oil pressure switch connector
• Poor contact of coupling connector
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Repair or replace the combination meter.
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