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Home >> Infiniti >> 2012 >> M35h V6-3.5L (VQ35HR) Hybrid >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> P Code Charts >> P0AA6

P0AA6




DTC Logic


DTC DETECTION LOGIC

NOTE:
- If DTC P0AA6 is displayed with DTC P0AA7, perform the trouble diagnosis for DTC P0AA7. Refer to HBC190, "DTC Logic".
- If DTC P0AA6 is displayed with DTC P3117, P3118, P3119 or P3120, perform the trouble diagnosis for DTC
P3117, P3118, P3119 or P3120. Testing and Inspection.






DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
- GO TO 2.

2. PERFORM DTC CONFIRMATION PROCEDURE

1.Set the vehicle to READY.
2.Set the vehicle as the following condition and wait at least 1 minute.





3.Turn ignition switch OFF and wait at least 1minute.
4.Turn ignition switch ON.
5.Check DTC.
Is DTC detected?
YES- Proceed to .
NO- INSPECTION END


Diagnosis Procedure


WARNING:
- Because hybrid vehicles and electric vehicles contain a high voltage battery, there is the risk of electric shock, electric leakage, or similar accidents if the high voltage component and vehicle are handled incorrectly. Be sure to follow the correct work procedures when performing inspection and maintenance.
- Be sure to remove the service plug in order to shut off the high voltage circuits before performing inspection or maintenance of high voltage system harnesses and parts.
- Be sure to put the removed service plug in your pocket and carry it with you so that another person does not accidentally connect it while work is in progress.
- Be sure to wear insulating protective equipment consisting of glove, shoes and glasses before beginning work on the high voltage system.
- Clearly identify the persons responsible for high voltage work and ensure that other persons do not touch the vehicle. When not working, cover high voltage parts with an insulating cover sheet or similar item to prevent other persons from contacting them.
- High Voltage Precautions.

CAUTION:
There is the possibility of a malfunction occurring if the vehicle is changed to READY status while the service plug is removed. Therefore do not change the vehicle to READY status unless instructed to do so in the Service Manual.

1. ERASE DTC

Erase DTC.
- GO TO 2.

2. INSULATION RESISTANCE DROP PARTS IDENTIFICATION-1

1.Turn ignition switch ON and wait at least 1 minute.
2.Check the hybrid system warning lamp.
Does the hybrid system warning lamp turn ON?
YES- Perform self-diagnostic and check DTC. Testing and Inspection.
NO- GO TO 3.

3. INSULATION RESISTANCE DROP PARTS IDENTIFICATION-2

1.Set the vehicle to READY.
2.Set the vehicle to following condition.





3.Check the hybrid system warning lamp.
Does the hybrid system warning lamp turn ON?
YES- Erase self diagnostic result, And then GO TO 4.
NO- GO TO 4.

4. INSULATION RESISTANCE DROP PARTS IDENTIFICATION-3

1.Turn ignition switch OFF.
2.Set the vehicle to READY and wait at least 1 minute as following condition.






CAUTION:
Never depress an accelerator pedal.
Does the engine start?
YES- GO TO 3.
NO- GO TO 5.

5. INSULATION RESISTANCE DROP PARTS IDENTIFICATION-4

Check the hybrid system warning lamp.
Does the hybrid system warning lamp turn ON?
YES- Perform self-diagnostic and check DTC. Testing and Inspection.
NO- GO TO 6.

6. INSULATION RESISTANCE DROP PARTS IDENTIFICATION-5

1.Set the vehicle to following condition.





2.Rev engine and keep the engine speed for at least 1 minute under no load.
3.Check the hybrid system warning lamp.
Does the hybrid system warning lamp turn ON?
YES- Perform self-diagnostic and check DTC. Testing and Inspection.
NO- GO TO 7.

7. INSULATION RESISTANCE DROP PARTS IDENTIFICATION-6

1.Release accelerator pedal.
2.Set the vehicle to following condition and wait at least 1 minute.





3.Check the hybrid system warning lamp.
Does the hybrid system warning lamp turn ON?
YES- Perform self-diagnostic and check DTC. Testing and Inspection.
NO- GO TO 8.

8. PRECONDITIONING


WARNING:
Shut off high voltage circuit. How to Cut Off High Voltage.
Check voltage in high voltage circuit. (Check that condenser are discharged.)
1.Remove trunk finisher front. Trunk Room Trim.





2.Remove harness cover (1).









3.Measure voltage between high voltage harness terminals.









CAUTION:
For voltage measurements, use a tester which can measure to 500 V or higher.
- GO TO 9.

9. CHECK LI-ION BATTERY INSULATION RESISTANCE

1.Remove Li-ion battery. Removal and Installation.
2.Remove component parts of Li-ion battery. Exploded View.
3.Check the insulation resistance of component parts. Component Inspection.
Is the inspection result normal?
YES- GO TO 10.
NO- Replace error-detect parts. Exploded View.

10. CHECK LI-ION BATTERY HIGH VOLTAGE HARNESS CONNECTOR INSULATION RESISTANCE-1

Check the insulation resistance of Li-ion battery high voltage harness connector. Insulation Resistance.





Is the inspection result normal?
YES- GO TO 11.
NO- GO TO 14.

11. CHECK LI-ION BATTERY HIGH VOLTAGE HARNESS CONNECTOR INSULATION RESISTANCE-2

Check the insulation resistance of battery junction box high voltage harness connector. Insulation Resistance.





Is the inspection result normal?
YES- GO TO 12.
NO- Replace high voltage harness connector.

12. CHECK LI-ION BATTERY HIGH VOLTAGE HARNESS CONNECTOR INSULATION RESISTANCE-3

Check the insulation resistance of battery junction box high voltage harness connector. Insulation Resistance.





Is the inspection result normal?
YES- GO TO 13.
NO- GO TO 15.

13. CHECK ELECTRIC COMPRESSOR HIGH VOLTAGE HARNESS CONNECTOR INSULATION RESISTANCE
1.Disconnect electric compressor high voltage harness connector.
2.Check the insulation resistance of electric compressor high voltage harness connector . Refer to HBC344, "Insulation Resistance".





3.Check whether there are neither a water infiltration mark nor a defective seal in the high voltage harness connector.
Is the inspection result normal?
YES- GO TO 14.
NO- Replace high voltage harness connector.

14. CHECK ELECTRIC COMPRESSOR INSULATION RESISTANCE

Check electric compressor insulation resistance. Electric Compressor Insulation Resistance Check.
Is the inspection result normal?
YES- GO TO 17.
NO- Replace electric compressor. Removal and Installation.

15. CHECK TRACTION MOTOR INVERTER HIGH VOLTAGE HARNESS CONNECTOR INSULATION RESISTANCE
1.Disconnect traction motor inverter high voltage harness connector.
2.Check the insulation resistance traction motor inverter high voltage harness connector. Insulation Resistance.





3.Check whether there are neither a water infiltration mark nor a defective seal in the high voltage harness connector.
Is the inspection result normal?
YES- GO TO 16.
NO- Replace high voltage harness connector.

16. CHECK TRACTION MOTOR INVERTER INSULATION RESISTANCE

Check traction motor inverter insulation resistance. Component Tests and General Diagnostics.
Is the inspection result normal?
YES- GO TO 17.
NO- Replace traction motor inverter. Removal and Installation.

17. CHECK 3-PHASE HARNESS INSULATION RESISTANCE

1.Disconnect the 3-phase harness from the traction motor inverter. Removal and Installation.
2.Check the insulation resistance. Component Tests and General Diagnostics.





3.Check whether there are neither a water infiltration mark nor a defective seal in the 3-phase harness connector.
Is the inspection result normal?
YES- GO TO 18.
NO- Replace the transmission assembly due to malfunction in the 3-phase harness. Removal and Installation.

18. CHECK TRACTION MOTOR INSULATION RESISTANCE

Check traction motor insulation resistance. Component Tests and General Diagnostics.
Is the inspection result normal?
YES- Perform Intermittent Incident.
NO- Replace the transmission assembly due to malfunction in the traction motor. Removal and Installation.
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