TPMS Part Replacement Procedure- NEXON MCE Title: TPMS System Part Replacement Procedure(NEXON MCE) Date: 18-Mar-20 Version 3.0 Page: 7 of 19 Prepared:Kapil M Checked: Awanish T Approved: Sanjeev M This specification is the exclusive property of Tata Motors Limited. Without their consent it may not be reproduced or given to third parties. The above specifications are subject to change and therefore suppliers are requested to refer the latest one. CONTROLLED COPY FOR RESTRICTED CIRCULATION © TATA MOTORS LTD. 2. TPMS ECU Replacement Procedure 2.1. Pre-checks / tasks to be done before replacing the ECU 1) After performing all the necessary checks as per the troubleshooting guide, at wire harness and if no root cause is found, then follow the below procedure. 2) Connect the diagnostic tool to OBD connector. 3) Turn the IGN ON using SSB / Key. Check on IPC whether it displays TPMS data or not. 4) Check ECU is learnt and DID 0x6408, 0x6409, 0x640A, 0x640B, 0x640C are written with Some ID. 5) If IPC displays either one/more of tire data incorrectly then check with actual Tire Pressure (Ensure Pressure gauge used is well calibrated). If Air filled then Operator needs to drive vehicle with 40 kmph speed for 5 minutes to update current reading on IPC. 6) If Sensor related fault is there then follow the procedure given in section 3.2. 7) Check the customer reported fault, whether it is rectified. 8) If the fault is rectified, disconnect the OBD connector and diagnostic tool. If step 7 (above) is NOT OK, i.e. fault is not rectified, follow the TPMS ECU replacement procedure given below. 2.2. ECU replacement procedure Prerequisite: 1) Gateway (Instrument Cluster) shall be functional. 2) TPMS Sensors with known sensor ID shall be available. 3) Latest vehicle configuration / parameter data shall be available on the server. 4) New TPMS ECU shall be available for replacement. NOTES: 1. It is not allowed to take TPMS ECU from another vehicle for replacement. Take a new ECU always.
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