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FUEL SYSTEM PRESSURE RELEASE NOTE: 1. Loosen fuel tank filler cap to relieve tank pressure. Remove fuel pump relay from underhood fuse/relay box. Start and operate engine until it stalls. Crank engine an additional 30 seconds. 2. Loosen hose clamp of fuel line on side of pressure regulator, coming from fuel line inlet distributor pipe. Cover fuel hose with a shop towel, and slowly pull hose from pressure regulator to relieve fuel pressure. When fuel stops leaking, reinstall hose and clamp. FUEL PRESSURE & FUEL PUMP RELAY TEST NOTE: Fuel Pressure 1. Relieve fuel pressure. See FUEL SYSTEM PRESSURE RELEASE . Attach Fuel Pressure Gauge Set (J-34730-1 ) and Adapter (J-35957-1 ) to Schrader fitting on fuel rail. Disconnect pressure regulator vacuum hose. Turn ignition on. Allow fuel pump to run for about 2 seconds. 2. Fuel system pressure should be about 41-46 psi (2.8-3.2 kg/cm2 ). See FUEL PUMP PERFORMANCE . Start engine and check for leaks. Connect pressure regulator vacuum hose. If engine will not start, the fuel pump relay can be by-passed. Also see appropriate CHART A-3 – ENGINE CRANKS BUT WILL NOT RUN under TROUBLE SHOOTING CHARTS. With engine idling, fuel pressure should be 25-30 psi (1.8-2.1 kg/cm2 ). NOTE: Fuel pump relay is located in engine compartment fuse/relay box. Begin basic fuel system diagnosis with testing fuel pressure. To test the fuel pump relay circuit, proceed to CHART A-5 – FUEL PUMP RELAY CIRCUIT under TROUBLE SHOOTING CHARTS. Fuel Pump Relay 1. ECM supplies power to relay as long as ECM receives ignition reference signals or starter crank signal. To run fuel pump without starting engine, remove relay and jumper terminals No. 2 and 4. See Fig. 5 and Fig. 6 . 2. To test relay, use jumper wires to ground terminal No. 4 of relay and apply battery voltage to terminal No. 2 of relay. Using ohmmeter, check for continuity between relay terminals No. 1 and 3. If continuity is not present, replace relay.

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On Hombre, when door lock switch is activated, doors will lock or unlock in unison. Actuators receive voltage from door lock relay which applies voltage to one of the terminals, and ground to the other. To reverse actuators, the polarity to terminals is reversed. Circuit breaker protects against damage and resets after voltage is removed. On Amigo, Rodeo and Trooper, system components consist of a door lock control unit (located in driver’s door lock/power window switch), door lock actuators, door lock switch and tailgate switch (Trooper). Door lock control unit has constant battery voltage. Lock mechanism of all doors (including tailgate) can be activated by using ignition key in driver’s front door, or by using door lock knob. When lock mechanism is activated, current flows from control unit to actuators for about one second.

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To erase anti-lock brake system (ABS) DTCs on 1998 Passports without the PGM Tester, use the procedure in this bulletin. The procedure in the 1998 Passport Service Manual is incorrect. NOTE: You can erase ABS DTCs with the PGM Tester when the SN811 software version becomes available. On page 5A-38 of the Service Manual, cross out step 3, “How to erase code,” and write on the page, “See S/B 97-084 for the ABS DTC erasing procedure.” 3. Using the two brown, male connectors from the Connector Test Adapter Kit (T/N J-35616-A), insert one into terminal 4 of the DLC, and the other into terminal 12 of the DLC. Then connect a jumper wire from the kit (any color) between the two connectors. REQUIRED SPECIAL TOOL Connector Test Adapter Kit: TIN J-35616-A ERASING ABS DTCs NOTE: 0 ABS DTCs cannot be erased by disconnecting the battery. Doing this procedure erases a// ABS DTCs (current and stored). 1. Turn the ignition switch OFF (0). 2. Under the driver’s side of the dashboard, locate the 16P DLC (data link connector). / JUMPERWIRE and CONNECl \ 4. Turn the ignition switch ON (II). (The ABS indicator light flashes the DTCs.) Let the light flash on and off at least once. 5. Using your hand, press the brake pedal until you hear the solenoid click, then release the pedal. Do this eight times within 3 seconds. 6. After you

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REMOVAL STEPS Preparation: Battery ground cable 1. Radiator upper fan shroud – Remove from radiator. 2. Cooling fan assembly – Remove four nuts, then the cooling fan assembly. 3. Power steering pump drive belt 4. Air Conditioning compressor drive belt 5. Generator drive belt 6. Fan pulley assembly 7. Crankshaft pulley assembly – Using special tool J-8614-O1, hold crankshaft pulley. – Remove center bolt, then the pulley. 8. Oil cooler hose – Remove two cooler hose bracket fixing bolts on the timing cover. 9. Timing belt cover 10. Pusher CAUTION: – The pusher prevents air from entering the oil chamber. Its rod must always be facing upward. INSTALLATION STEPS To install, follow the removal steps in the reverse order. 11. Timing belt CAUTIONS: – Do not bend or twist the belt, otherwise its core could be damaged. The belt should not be bent at a radius less than 3Omm. – Do not allow oil or other chemical substances to come in contact with the belt. They will shorten the belt life. – Do not attempt to pry or stretch the belt with a screwdriver or any other tool during installation. – Store timing belt in a cool and dark place. Never expose the belt to direct sunlight or heat.

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Remove fan pulley assembly. Remove crankshaft pulley bolt. Using Puller (J-8614-01) or equivalent, remove crankshaft pulley. Remove oil cooler hose from timing cover. Remove timing belt cover. Align all timing marks prior to belt removal. See Fig. 1 and Fig. 2 . Remove belt tensioner pusher and timing belt. Aligning Camshaft Timing Marks Aligning Crankshaft Timing Marks Installing Pinch Clips On Timing Belt Adjusting Timing Belt Tensioner Pusher