Diagnosis Procedure

WARNING: This page is about a different car, the 2012 Infiniti M35h. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION:

To perform diagnosis, observe "PRECAUTIONS FOR TROUBLE DIAGNOSIS ".
To repair harness, observe "PRECAUTIONS FOR HARNESS REPAIR ".

INSPECTION START
Confirm the detected malfunction (result of "CAN Diagnosis").

Is there any malfunction at present or a malfunction history?

YES: Proceed to "TROUBLE DIAGNOSIS FLOW CHART ".

NO: GO TO 2.

DETECT THE ROOT CAUSE

◦ With CONSULT

Check DTC of "MOTOR CONTROL".

Detected DTC

Root cause

DTC U0100, U0101, U0111 and U0293

HEV system CAN line (Short circuit or traction motor inverter branch line⁽¹⁾)
ECM
HPCM
TCM
Li-ion battery controller
Traction motor inverter

DTC U0100

ECM branch line
ECM

DTC U0101

TCM branch line
TCM

DTC U0111

Li-ion battery controller branch line
Li-ion battery controller

DTC U0293

HPCM branch line
HPCM and battery junction box

DTC U0101, U0111 and U0293

Main line between traction motor inverter and TCM

DTC U0111 and U0293

Main line between HPCM and TCM

⁽¹⁾	If "EV/HEV" detects DTC U0110, check the traction motor inverter branch line first.

: Intermittent malfunction. Check malfunctioning parts, according to the intermittent Incident. Refer to "INTERMITTENT INCIDENT ".