HARNESS TESTING

2.4L Engines

NOTE: The 1993–95, rear-wheel drive 2.4L (California) Pick-ups have the same engine controls as the 3.0L engines. All other 2.4L engines are listed as 2.4L engines.

1. Unplug the harness connector to the EEP solenoid and turn the ignition switch ON. Measure the power supply voltage from the EEP solenoid harness connector terminal 2 to a ground. If the voltage is not the same as the battery's (around 10–12 volts) repair the harness between EEP solenoid terminal 2 and the MFI relay.
2. Unplug the ECM harness connector and check for an open or short-circuit to ground, between EEP solenoid terminal 1 and the ECM terminal 62. If a short or open-circuit is found, repair the harness between these two terminals.
3. Plug all connectors back into their original components.

   Fig. 1: The arrangement of the EEP solenoid terminals — all models

2.4L (California), 3.0L and 3.5L Engines

1. Unplug the EEP solenoid harness connector and the MFI relay connector. By touching the circuit tester probes to both ends of the harness, check for continuity between the EEP solenoid terminal and the MFI relay. If no continuity is found, repair the circuit between these terminals.
   1. 2.4L (California) engines: EEP terminal 2 and MFI relay terminal 2.
   2. 3.0L (12 valve) engines: EEP terminal 1 and MFI relay terminal 5.
   3. 3.0L (24 valve) and 3.5L engines: EEP terminal 1 and MFI relay terminal 3.
2. Unplug the ECM harness connector and check for an open or short-circuit to ground between the ECM terminal and the EEP solenoid terminal. If a short or open-circuit is found, repair the harness between these terminals.
   1. 2.4L (California) engines: EEP terminal 1 and ECM terminal 9.
   2. 3.0L (12 valve) engines: EEP terminal 2 and ECM terminal 62.
   3. 3.0L (24 valve) and 3.5L engines: EEP terminal 2 and ECM terminal 9.
3. Plug all connectors back into their original components.