Electronic Control Unit (Ecu): Accord
If there is no voltage signal from control unit when cranking leak solenoid should be energized, check the following conditions:
Check power source and ground terminals at ECU.
- Terminal No. 32 - Continuity to ground.
- Terminals No. 22 and 23 - Voltage from No. 1 fuse. Inspect starter signal.
- Terminal No. 30 - Voltage/cranking through fuse No. 10. Inspect ignition coil signal.
- Terminal No. 11 - Voltage with engine running. Inspect speed pulser signal.
- Terminal No. 5 - Pulsing 0-5 volts with L/F wheel turned by hand and ignition on. If not, terminals No. 32 and 23 - Continuity/no continuity fluctuation with L/F wheel turned by hand and ignition on. Inspect coolant sensor signal.
- Terminal No. 7 - 1 volt at operating temperature. Inspect air temperature sensor signal.
- Terminal No. 3 - 2-4 volts at operating temperature. If no faults are found in these checks, replace ECU.