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Q5/X451 FATC
DTC Troubleshooting Data
Version: 1.0
Date: 16-Oct-2018
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.
Author: ERC
Page: 186 of 202
U0155-08:- Lost communication with instrument Panel Cluster- IPC Message Time Out Failure
Overview:-
ISO Code
U0155-08
Customer Symptom
Reduced climate control functionality and performance.
Fault Effects (On Vehicle)
Reduced climate control functionality and performance
Lamp Status (If Any)
1) The lost communication with IPC DTC 0x C15508 is in active state in fault
memory.
2) The HVAC outputs (motors and compressor request signal) should be
functional using default data values [As mentioned below:
1. Vehicle speed = 0
2. OAT IC Sig = 25DegC ]
3) The lost communication with IPC DTC 0xC15508 is in passive state in fault
memory.
4) The HVAC outputs (motors and compressor request signal) should be respond
to the panel request.
5) CAN communication should be normal.
Fault Detection Condition
Open circuit of the both CAN_H (connector pin no.6) and
CAN_L(connector pin no.6), only CANH, only CANL
Normal Operating
Condition
ECU communicates properly with IPC ECU.
Probable Trouble Area
CAN_H and CAN_L wires
Healing Condition
Reconnection of the CAN_H ( connector pin No.6) and
CAN_L(connector pin no.5)with the main CAN bus