P31D4

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

- Turn power switch OFF and wait at least 20 seconds.
- Make sure that 12V battery voltage is 11 V or more.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT
1.Turn power switch OFF and wait at least 60 seconds.
2.Turn power switch ON and wait at least 10 seconds.
3.Check DTC.
Is DTC detected?
YES- Proceed to "Diagnosis Procedure" .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK PRE-CHARGE RELAY GROUND CIRCUIT

1.Turn power switch OFF.
2.Disconnect Li-ion battery harness connector.
3.Check the continuity between Li-ion battery harness connector and ground.





Is inspection result normal?
YES- GO TO 2.
NO - Repair or replace error-detected parts.

2. CHECK PRE-CHARGE RELAY DRIVE CIRCUIT-I

Check the resistance between Li-ion battery connector terminals.





Is the inspection result normal?
YES- GO TO 3.
NO- Check the relay circuit of Li-ion battery for malfunction. If no malfunction is found, replace battery junction box. Refer to "Exploded view" Service and Repair (without Li-ion battery heater), "Exploded view" Service and Repair (with Li-ion battery heater).

3. CHECK PRE-CHARGE RELAY DRIVE CIRCUIT-II

1.Disconnect VCM harness connector.
2.Check continuity between VCM harness connector and Li-ion battery harness connector.





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