PGM-FI Control System

Troubleshooting Flowchart - TDC/CRANK/CYL Sensor

Self-diagnosis Check Engine light indicates code 4: A problem in the CRANK Sensor circuit. Self-diagnosis Check Engine light indicated code 8: A problem in the TDC Sensor circuit.
Self-diagnosis Check Engine light indicates code 9: A problem in the CYL Sensor circuit.
The CRANK sensor determines timing for fuel injection and ignition of each cylinder and also detects engine RPM. The TDC sensor determines ignition timing at start-up (cranking) and when crank angle is abnormal. The CYL sensor detects the position of No.1 cylinder for sequential fuel injection to each cylinder.