Powertrain VCU Replacement Procedure 2 VCU Replacement Procedure 2.1 Pre-checks/tasks The following pre-checks should be done before starting the process of VCU replacement. 1. After performing all the necessary checks as per the troubleshooting guide, at wire harness, switches, lamps etc., 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 4. Perform step 15 to step 26 mentioned in section 2.2 (VCU replacement process) 5. Check the customer reported fault, whether it is rectified 6. If the fault is rectified, disconnect the OBD connector and diagnostic tool If step 5 (above) is NOT OK, i.e. fault is not rectified, follow the replacement procedure given below TITLE: Powertrain VCU Replacement Procedure Document number: Date: 01/08/2023 Version: 1.0 Page:7 of 15 Prepared: Vaishali Rathore Checked: Diganta Baishya Approved: Arikapudi Suresh 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.
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