Diagnosis Procedure

WARNING: This page is about a different car, the 2016 Infiniti Q50. 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

Go to TROUBLE DIAGNOSIS FLOW CHART .

NO

GO TO STEP 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*) 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 U0111 and U0293	Main line between traction motor inverter and HPCM

NOTE:

* : 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 .