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PSCM
DTC Troubleshooting Guide for Nexon
Version: 1.1
Date: 21/06/2017
Author: E&E Chassis - ERC
Page: 77 of 156
Copyright ©
TATA MOTORS Ltd.
This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author.
C1314 - 13: Drive motor “A” phase current - Circuit open
Overview:
Drive motor “A” is value of motor current
ISO Code
C1314-13
Customer Symptom
No PSCM functionality (Heavy steering)
Fault Effects (On Vehicle)
No assistance
Lamp Status (If Any)
Warning Lamp ON
Fault Detection Condition
1) Any motor supply cable (U phase, V phase, W phase) is
open circuit
Normal Operating Condition
PSCM should provide assist if steering wheel is steered after
engine is cranked. Normal operating range:
ECU will be awake from 6V to 16 V.
Full assistance is b/w 10V to 16V
Reduced assistance is b/w 8.7V to 10V
Drive motor “A” phase current b/w 0 to 60 Amp
Probable Trouble Area
Motor supply cable
Healing Condition
NA
Component Details:
Motor-The PSCM uses a DC motor to generate and provide the torque to the column shaft.
Preliminary Checks:
x
Check all the cables and connectors to ECU for any damage (Visually)