Codes 14, 15 & 16: Fuel Injector
NOTE:
Refer to illustration for ECU connector and terminal identification. See Figure
.
- Crank engine and ensure each fuel injector makes an operating sound. If fuel injectors make an operating sound, replace ECU. If fuel injectors do not make an operating sound, go to next step.
- Disconnect fuel injector connector F109. See Fig 1 . Turn ignition on. Measure voltage between ground and connector F109, terminal No. 1. If voltage is more than 9 volts, go to next step. If voltage is less than 9 volts, repair fuel injector power circuit between battery and connector F109.
- Turn ignition off. Measure resistance between connector F109, terminal No. 1 and terminals No. 2, 3 and 4. See Fig 1 . If all resistances are 10-18 ohms, go to next step. If any resistance is not 10-18 ohms, check wiring harness and repair as necessary. If wiring harness is okay, replace fuel injectors as necessary.
- Reconnect fuel injector connector F109. Turn ignition on. Measure voltage between ground and ECU connector F119, terminals No. 11, 12 and 25. If voltage at each terminal is more than 8 volts, go to next step. If voltage at any terminal is less than 8 volts, repair wiring harness between ECU and fuel injectors.
- Turn ignition off. Disconnect ECU connectors. Measure resistance between ground and ECU connector F119, terminals No. 13 and 26. If both resistances are less than 10 ohms, check for poor ECU connector contact. If connectors are okay, replace ECU. If either resistance is more than 10 ohms, repair connector and/or wiring harness as necessary.