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MA Branch Line Circuit Check




MA Branch Line Circuit Check

1. CHECK CONNECTOR

1 Turn the ignition switch OFF.
2 Disconnect the battery cable from the negative terminal.
3 Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side).

Is the inspection result normal?
YES
GO TO 2.
NO
Repair the terminal and connector.

2. CHECK HARNESS FOR OPEN CIRCUIT

1 Disconnect the connector of combination meter.
2 Check the resistance between the combination meter harness connector terminals.






Is the measurement value within the specification?
YES
GO TO 3.
NO
Repair the combination meter branch line.

3. CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the combination meter. Refer to [Power Supply and Ground Circuit Check [Combination Meter] Component Tests and General Diagnostics ].

Is the inspection result normal?
YES (Present error)
Replace the combination meter. Refer to [Combination Meter: Removal and Installation] Service and Repair.
YES (Past error)
Error was detected in the combination meter branch line.
NO
ERROR! Unknown action!Repair the power supply and the ground circuit.

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