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PSCM
DTC Troubleshooting Guide for Nexon
Version: 1.1
Date: 21/06/2017
Author: E&E Chassis - ERC
Page: 12 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.
Trouble Shooting:
Voltage
fluctuates
between 0V
and 14V?
A
Yes
Disconnect PSCM ECU power supply
connector. Check voltage b/w pin 1& 2.
(Refer Connector View & Information)
No
Is DTC
Present?
Yes
No
Stop
1. Connect the TML Diagnostic Tool.
2. Turn the Ignition ON
3. Check the status of DTC’s (Memorized/Current)
4. Record the DTC & Clear
5. Turn Ignition OFF & ON.
6. Read ECU parameters 7001(Control Module Input Power “A”)
using diagnostic tool
Range: 9 to 16 V.
7. Verify If DTC
U3006 – 16
is present
Replace wiring harness
(Vehicle side)
Check resistance between
vehicle ground and ground at
the power supply connector.
Resistan
ce < 1
Ω?
No
Yes