NANO

ELECTRICALS 198 8.0 BRAKE SWITCH FAILURE CASES AND RECOVERY ON VEHICLE: Sr. No. Failure Cases Recovery on vehicle & TCU implementation 1 Brake switch connector Open / Brake switch - Open pin 147 (NC contact) 1. After 5 ignition cycle (on/off: 1cycle = 30sec), EMS send Brake switch signal is not correct on CAN, then: a) TCU log DTC b) Creeping disabled c) Able to drive in all gears 2. Before five Ignition cycle, upshift will happened at engine rpm @ 4500 in auto mode. Vehicle runs normally in manual mode. (As TCU gets information from EMS as brake pressed and signal correct). 2 Brake switch - Open pin 135 (NO contact) and pressed brake 3 Brake switch open (both pin no 135 and 147)