M/C Relay

M/C RELAY

Diagnosis Procedure


1. CHECK M/C RELAY CONTROL CIRCUIT

1.Turn power switch OFF.
2.Remove M/C relay.
3.Check the voltage between M/C relay harness connector terminals.





4.Turn power switch ON.
5.Check the voltage between M/C relay harness connector terminals.





Is the inspection result normal?
YES- GO TO 9.
NO- GO TO 2.

2. CHECK BATTERY POWER SUPPLY-I

Check the voltage between M/C relay harness connector and ground.





Is the inspection result normal?
YES- GO TO 6.
NO- GO TO 3.

3. CHECK FUSIBLE LINK

1.Remove #G fusible link.
2.Check that the fusible link is not fusing.
Is the inspection result normal?
YES- GO TO 4.
NO- Replace the fusible link after repairing the applicable circuit.

4. CHECK BATTERY POWER SUPPLY-II

Check the voltage between fusible link harness connector and ground.





Is the inspection result normal?
YES- GO TO 5.
NO- Check power supply circuit for battery power supply.

5. CHECK BATTERY POWER SUPPLY CIRCUIT-I

1.Check the continuity between M/C relay harness connector and fusible link harness connector.





2.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Repair or replace error-detected parts.

6. CHECK M/C RELAY CONTROL SIGNAL CIRCUIT

1.Turn power switch OFF.
2.Disconnect VCM harness connector.
3.Check the continuity between M/C relay harness connector and VCM harness connector.





4.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- GO TO 7.
NO- Repair or replace error-detected parts.

7. CHECK VCM GROUND CIRCUIT

Check the continuity between VCM harness connector and ground.





Is the inspection result normal?
YES- GO TO 8.
NO- Repair or replace error-detected parts.

8. CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
Is the inspection result normal?
YES- Replace VCM. Refer to "Removal and Installation" Removal And Installation.
NO- Repair or replace error-detected parts.

9. CHECK BATTERY POWER SUPPLY-III

Check the voltage between M/C relay harness connector and ground.





Is the inspection result normal?
YES- GO TO 11.
NO- GO TO 10.

10. CHECK BATTERY POWER SUPPLY CIRCUIT-II

1.Turn power switch OFF.
2.Disconnect fusible link #G.
3.Check the continuity between M/C relay harness connector and fusible link harness connector.





4.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Repair or replace error-detected parts.

11. CHECK M/C RELAY

Refer to "Component Inspection (M/C Relay)" .
Is the inspection result normal?
YES- INSPECTION END
NO- Replace M/C relay.


Component Inspection (M/C Relay)


1. CHECK M/C RELAY

1.Turn power switch OFF.
2.Remove M/C relay.





3.Check the continuity between M/C relay terminals under the following conditions.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace M/C relay.