Disclaimer: Wire colors vary by chassis (Alto vs Wagon R). Always back-probe to verify before cutting.
Connects directly to the battery via a fuse. It maintains the ECU’s internal memory (Keep Alive Memory) for diagnostic trouble codes (DTCs).
Later K6A engines (post-2005) often feature Variable Valve Timing (VVT) , which the ECU manages to optimize low-RPM combustion and reduce failure rates to under 6%.