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PSCM
DTC Troubleshooting Guide for Nexon
Version: 1.1
Date: 21/06/2017
Author: E&E Chassis - ERC
Page: 47 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.
C1312 - 62: Rotor position sensor signal “A” to “B” – Signal compare failure
Overview:
Rotor position sensor signal “A” and “B” are output value of rotor position signal of motor
ISO Code
C1312-62
Customer Symptom
Heavy steering
Fault Effects (On Vehicle)
No Assistance
Lamp Status (If Any)
Warning Lamp ON
Fault Detection Condition
NA
Normal Operating Condition
PSCM should provide assist if steering wheel is steered after
engine is cranked. Normal operating range:
ECU will awake from 6V to 18V.
Full assistance is b/w 10V to 16V
Reduced assistance is b/w 8.7V to 10V
Probable Trouble Area
Values from both signals output from sensor are not coherent
to each other (Faulty sensor)
Healing Condition
NA
Component Details:
Rotor Position Sensor - The rotor position sensor is used for monitoring the angular position of the rotor. It is one of the
main inputs for the PSCM.
Preliminary Checks:
NA