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PSCM
DTC Troubleshooting Guide for Nexon
Version: 1.1
Date: 21/06/2017
Author: E&E Chassis - ERC
Page: 72 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 - 19: Drive motor “A” phase current - Circuit current above threshold
Overview:
Drive motor “A” is value of motor current
ISO Code
C1314-19
Customer Symptom
No PSCM functionality (Heavy steering)
Fault Effects (On Vehicle)
No assistance
Lamp Status (If Any)
Warning Lamp ON
Fault Detection Condition
Circuit current is above threshold 60 Amp
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 current consumption above the max limit for a time
interval.
Healing Condition
NA
Component Details:
Motor-The PSCM uses a DC motor to generate and provide the torque to the column shaft.
Preliminary Checks:
1. Check all the cables and connectors to ECU for any damage (Visually)