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PSCM
DTC Troubleshooting Guide for Nexon
Version: 1.1
Date: 21/06/2017
Author: E&E Chassis - ERC
Page: 6 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.
U3001 - 00: Control Module Improper Shutdown Performance
Overview:
ISO Code
U3001 - 00
Customer Symptom
No warning lamp, No heavy steering
Fault Effects (On Vehicle)
CAN lines can be alive
Lamp Status (If Any)
Warning Lamp OFF
Fault Detection Condition
If Battery (supply) voltage goes below 6V suddenly.
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 18V
Full assistance is b/w 10V to 16V
Reduced assistance is b/w 8.7V to 10V
Probable Trouble Area
Discharge battery
battery terminal loose / Sulphated / corroded
PSCM power supply connector loose
No output from alternator
fuse blown
ECU pin bend / damage
Healing Condition
NA
Component Details:
NA
Preliminary Checks:
1. Voltage at the battery terminals should be greater than 11.5V.
2. PSCM power supply connector should have greater than 11.5V for full assistance.
3. Check battery cable and PSCM connector terminals for damage.
4. Check PSCM ECU for pin bend/damage.
5. Alternator output voltage should be between 13.5 V to 14.5 V in engine running condition.