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Home >> Infiniti >> 2012 >> G37 Convertible V6-3.7L (VQ37VHR) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Information Bus >> Testing and Inspection >> Component Tests and General Diagnostics >> M&A Branch Line Circuit >> CAN
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CAN




M&A BRANCH LINE CIRCUIT

Diagnosis Procedure


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 unified meter and A/C amp. 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 unified meter and A/C amp.
2.Check the resistance between the unified meter and A/C amp. harness connector terminals.





Is the measurement value within the specification?
YES- GO TO 3.
NO- Repair the unified meter and A/C amp. branch line.

3. CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the unified meter and A/C amp. Unified Meter and A/C Amp.
Is the inspection result normal?
YES (Present error)-Replace the unified meter and A/C amp. Exploded View.
YES (Past error)-Error was detected in the unified meter and A/C amp. branch line.
NO- Repair the power supply and the ground circuit.
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