TATA BSVI Gasoline_Bifuel Program – EMS ECU Bosch DTC Troubleshooting Service Manual Version: 2.6 Date: 5-10-2023 Prepared By: Pradip Shimpi Checked By: Yeshwant Jadhav Approved By: Sanjeev M. Document Part No: 2921 02 xxx xxxx Page: 1536 of 1720 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. Normal Working Behaviour PIN 117 (Input 1) PIN 146 (Input 2) LID status Error logging Normal Condition High Low Open - Engine should not start. Normal LID open case during filling. Cluster message will displayed :"Close Fuel LID" CNG Lamp in cluster & CNG switch LED will blink. Low High Close - Engine should start. No display No Lamp. Error Logging condition when Fuel LID Close Condition No. PIN 117 (Input 1) PIN 146 (Input 2) Error logging Observation 1 Pin no.117 Open - P1609-21-DTC Set SVS lamp ON, Engine will start High High 2 Pin no.117 Open Pin no.146 Open P1609-21-DTC Set SVS lamp ON, Engine will start High High 3 Pin no. 117 Short to Ground Pin no. 146 Short to Ground P1609-21-DTC Set SVS lamp ON, Engine will start Low Low Error Logging condition when Fuel LID Open Condition No. PIN 117 (Input 1) PIN 146 (Input 2) Error logging Observation 1 - Pin no.146 Open P1609-21-DTC Set SVS lamp ON, Engine will start High High 2 Pin no.117 Open Pin no.146 Open P1609-21-DTC Set SVS lamp ON, Engine will start High High 3 Pin no. 117 Short to Ground Pin no. 146 Short to Ground P1609-21-DTC Set SVS lamp ON, Engine will start Low Low
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