| CAUTION | Electronic components used in control systems are designed to carry very low voltages. As little as a 30-volt charge created by static electricity can cause a total or degrading failure in PCM or other electronic components containing integrated circuits. Before servicing PCM, technician must ground himself and the work area to discharge static electricity. |
| Movement | Relative Humidity 10-20% | Relative Humidity 65-90% |
|---|---|---|
| Handling Clear Plastic Bag | 20,000 | 1200 |
| Handling Vinyl Envelope | 7000 | 600 |
| Sliding On Velour Seat | 15,000 | 400 |
| Walking On Carpet | 35,000 | 1500 |
| Walking On Tile/Vinyl | 12,000 | 50 |
STATIC CHARGE (VOLTS)
| CAUTION | DO NOT remove part from packaging until ready to install. Ground any static-proof package before opening. DO NOT touch electrical terminals of components unless properly grounded. DO NOT lay electrical components on car seat, carpeting or dashboard. Use electrostatic protection mat and ground strap whenever possible. (Scheme 1) |
Scheme 1
Note. Before replacing PCM, carefully inspect all wiring and control components. Failure to test for short circuits may result in repeated PCM failure due to shorts and Quad-Driver failure. To prevent internal damage to PCM, ensure ignition switch is in OFF position when connecting or disconnecting PCM connectors or any electrical components.
Note. When replacing defective PCM, remove knock sensor module or PROM from defective PCM. New PCM does not come equipped with knock sensor module or PROM (if applicable). Install knock sensor module or PROM into new PCM.
Ensure ignition switch is in OFF position. Disconnect negative battery cable. Remove electrical connectors from PCM. Remove PCM from vehicle. Remove access cover and remove knock sensor module or PROM (if applicable) from PCM.
Install knock sensor module or PROM (if applicable) in new PCM. Install access cover. Install PCM into vehicle. Connect electrical connectors to PCM. Reconnect negative battery cable.
Disconnect negative battery cable. Remove PCM from vehicle. See POWERTRAIN CONTROL MODULE (PCM) . Position PCM with access cover up. Remove access cover from PCM. Using thumb and forefinger, squeeze both ends of PROM inward (outward on some models) and pull PROM up from access hole.
Note. Note reference notch locations in PROM and PCM for reassembly reference.
- Ensure new PROM has same service number as original. Position PROM squarely over PCM PROM access hole. Press on outer edges of PROM until PROM is firmly seated in PCM. NOTE: Ensure reference notches in both PCM and PROM are properly aligned. If PROM is installed backward, PROM will be destroyed when ignition is turned on.
- Install PROM access cover on PCM. Install PCM in vehicle. See «POWERTRAIN CONTROL MODULE (PCM)»(ref-20434-S40324131362001010200000) . Start engine and enter diagnostics. See appropriate TESTS W/CODES article. Check for diagnostic trouble codes. See appropriate TESTS W/CODES article for code identification.
- If code(s) sets, PROM is either not fully seated in PCM or installed backward, has bent pins or is defective. If bent pins crack when trying to straighten, replace PROM. If PROM is installed backward or is defective, replace PROM.
- Disconnect negative battery cable, then positive battery cable. Remove intake manifold cover. Loosen fuel filler cap to relieve tank vapor pressure. Connect Fuel Pressure Gauge (J-34730-1) to fuel pressure connection. Place fuel pressure gauge bleed hose in a container and open gauge bleed valve to relieve fuel system pressure.
- Disconnect Intake Air Temperature (IAT) sensor electrical connector. Disconnect crankcase vent pipe at air intake duct. Remove air intake duct and air cleaner housing. Disconnect transaxle vent hose and vacuum lines at Idle Speed Control (ISC) actuator bracket.
- Disconnect vacuum manifold at throttle body. Disconnect Throttle Position (TP) sensor and ISC actuator electrical connectors. Disconnect cruise control servo vacuum hoses and electrical connector. Disconnect cruise control cable at throttle body. Remove cruise control servo and bracket.
- Disconnect accelerator cable at throttle body and ISC actuator bracket. Disconnect front bank spark plug wires and position aside. Disconnect throttle body coolant hoses at throttle body and surge tank pipe. Disconnect Exhaust Gas Recirculation (EGR) pipe at throttle body spacer. Disconnect brake booster vacuum hose at intake manifold vacuum fitting. Disconnect fuel rail ground wire at rear cylinder head.
- Holding both sides of fuel line fittings twist female connector 1/4 turn in each direction in order to loosen any dirt within fitting. Blow any dirt out of fitting using compressed air. Using a Quick-Disconnect Tool (J37088), disconnect quick-connect fittings at fuel rail. Wipe off male pipe end. Inspect both ends of fitting for dirt and burrs. Clean or replace components as required.
- Remove fuel rail bracket at EGR valve. Disconnect Positive Crankcase Ventilation (PCV) hose at intake manifold. Disconnect injector harness main connector. Remove 6 bolts and 4 studs securing intake manifold, and remove intake manifold. Inspect intake manifold gaskets and replace if necessary.
- Disconnect the knock sensor wire lead. Remove the knock sensor (1).
Scheme 2
Scheme 3
| CAUTION | Ensure engine and intake manifold are cool before tightening intake manifold bolts. |
- Install knock sensor and tighten to specification. See «TORQUE SPECIFICATIONS»(ref-20434-S19541606452001010200000) .
- Install intake manifold with throttle body attached. Tighten intake manifold bolts and studs to specification by staring at center of manifold and working outward in a circular pattern. See «TORQUE SPECIFICATIONS»(ref-20434-S19541606452001010200000) . When connecting fuel line quick connect fittings apply a few drops of clean engine oil to male ends. After reconnecting fuel lines, turn ignition switch to ON position for 2 seconds, then turn ignition switch to OFF position for 10 seconds. Turn ignition switch back to ON position and check for fuel leaks. To complete installation, reverse removal procedure. Tighten starter mounting bolts to specification. See «TORQUE SPECIFICATIONS»(ref-20434-S19541606452001010200000) .