Diagnosis - 4L30-E: Removal & Installation Isuzu Trooper II

Removal & Installation

Remove A/C compressor relay from fuse/relay box at passenger's side front corner of engine compartment. To install, reverse removal procedure.

Removal

1. Band apply solenoid is located on main valve body. see scheme 4 Disconnect negative battery cable. Remove exhaust pipe (if necessary) to access main case oil pan. Remove bolts, main case oil pan, magnet and gasket. Remove bolts and oil filter. Disconnect electrical connectors at band apply solenoid.
2. Remove spring pin used to retain band apply solenoid in main valve body. Remove band apply solenoid and gasket from main valve body by pulling on metal tip. DO NOT pull on electrical connector housing on band apply solenoid.

Installation

To install, reverse removal procedure using NEW gaskets and oil filter. Ensure spring pin is fully seated in main valve body. Install and tighten oil filter and main case oil pan bolts to specification. See TORQUE SPECIFICATIONS . Fill transmission with Dexron-III ATF.

1. Disconnect electrical connector from brakelight switch located near brake pedal. Remove lock nut. Unscrew brakelight switch.
2. To install, screw brakelight switch inward until clearance between threaded end on brakelight switch and pedal is .020-.040" (.51-1.02 mm). Install and tighten lock nut. Connect electrical connector. Ensure brakelights and cruise control operate properly.

1. ECT sensor is located on coolant pipe at rear of cylinder head, and contains a Blue/Red wire and a Blue/Yellow wire in electrical connector.
2. Disconnect negative battery cable. Drain cooling system. It may be necessary to remove fuel inlet manifold for access to ECT sensor. Remove ECT sensor.

Apply thread sealant to threads of ECT sensor. Install and tighten ECT sensor to specification. See TORQUE SPECIFICATIONS . Fill cooling system.

Kickdown switch is located on accelerator pedal. Replacement information is not available.

1. Disconnect negative battery cable. Apply parking brake. Place gearshift lever in "N" position. Remove mode switch cover for access to mode switch located on side of transmission. see scheme 4 Remove shift lever nut and disconnect shift lever from mode switch.
2. Remove bolts and heat protector from torque converter housing for access to wiring and mode switch. Remove air cleaner assembly. Disconnect mode switch harness connector. Remove clips for mode switch wiring. Remove mode switch retaining bolts and mode switch.

1. Install mode switch with retaining bolts. DO NOT tighten mode switch retaining bolts at this time. Mode switch must be adjusted. To adjust mode switch, rotate mode switch until slot in housing on mode switch aligns with selector shaft bushing. Insert a 3/32" punch into slot. (Scheme 39)
2. Tighten mode switch retaining bolts to specification. See «TORQUE SPECIFICATIONS»(ref-434-S36893045942000030800000). Install shift lever on mode switch and tighten shift lever nut to specification. Install mode switch cover on mode switch. Install heat protector. Install and tighten bolts to specification. Install air cleaner assembly.

Scheme 39

Ensure ignition is off. Disconnect negative battery cable. Remove front console. Disconnect PCM harness connectors. Remove PCM and brackets. To install, reverse removal procedure.

POWER mode switch is located on center console, near gearshift lever. Replacement information is not available.

1. Pressure control solenoid is located on adapter case valve body. see scheme 4 Disconnect negative battery cable.
2. Remove exhaust pipe (if necessary) for access to adapter case oil pan. Remove bolts, adapter case oil pan and gasket. Disconnect electrical connectors at pressure control solenoid. Remove bolt and pressure control solenoid.

1. Install pressure control solenoid on adapter case valve body. Ensure pressure control solenoid is installed with electrical connector terminals facing upward, toward transmission.
2. Install and tighten pressure control solenoid bolt to specification. See «TORQUE SPECIFICATIONS»(ref-434-S36893045942000030800000) . Using a NEW gasket, install adapter case oil pan. Install and tighten bolts to specification. To install remaining components, reverse removal procedure. Fill transmission with Dexron-III ATF.

1. Shift solenoids "A" and "B" are located on main valve body. see scheme 4 Disconnect negative battery cable. Remove exhaust pipe (if necessary) to access main case oil pan. Remove bolts, main case oil pan, magnet and gasket. Remove bolts and oil filter. Disconnect electrical connectors at appropriate shift solenoid.
2. Remove spring pin used to retain shift solenoid in main valve body. Remove shift solenoid and gasket from main valve body by pulling on metal tip. DO NOT pull on electrical connector housing on shift solenoid.

To install, reverse removal procedure using NEW gaskets and oil filter. Ensure spring pin is fully seated in main valve body. Install and tighten oil filter and main case oil pan bolts to specification. See TORQUE SPECIFICATIONS . Fill transmission with Dexron-III ATF.

1. Disconnect negative battery cable. Remove front console and gear selector lever assembly. Disconnect electrical connector at speed sensor located on extension housing on rear of transmission. see scheme 4 Remove speed sensor bolt, speed sensor and "O" ring.
2. To install, reverse removal procedure using a NEW "O" ring. Install and tighten speed sensor bolt to specification. See «TORQUE SPECIFICATIONS»(ref-434-S36893045942000030800000).

1. Disconnect harness connector at TP sensor mounted on side of throttle body. Remove TP sensor bolts and TP sensor.
2. To install, ensure throttle is closed. Install TP sensor on throttle body and throttle shaft. Align TP sensor with bolt holes. Install and tighten TP sensor bolts to specification. See «TORQUE SPECIFICATIONS»(ref-434-S36893045942000030800000) . Install harness connector.

1. The TCC solenoid is located on adapter case valve body. see scheme 4 Disconnect negative battery cable.
2. Remove exhaust pipe (if necessary) to access adapter case oil pan. Remove bolts, adapter case oil pan and gasket. Disconnect electrical connector at TCC solenoid. Remove bolt, TCC solenoid and "O" ring.

1. Using a NEW "O" ring, install TCC solenoid on adapter case valve body. Install and tighten TCC solenoid bolt to specification. See «TORQUE SPECIFICATIONS»(ref-434-S36893045942000030800000) .
2. Using a NEW gasket, install adapter case oil pan. Install and tighten bolts to specification. To install remaining components, reverse removal procedure. Fill transmission with Dexron-III ATF.

1. Raise and support vehicle. Disconnect negative battery cable. Drain transmission fluid. NOTE: Transmission still contains fluid. Place a large pan under transmission adapter case.
2. Remove adapter case oil pan bolts, pan and gasket.
3. Disconnect harness from force motor solenoid, converter clutch solenoid, and 5-pin connector on adapter case. Disconnect ground wire from converter clutch solenoid connector. Remove wire harness assembly which contains transmission oil temperature sensor. see scheme 4
4. For installation, reverse removal procedure. Using a NEW gasket, install adapter case oil pan. Install and tighten bolts to specification. Fill transmission with Dexron-III ATF.

WINTER mode switch is located on center console, near gearshift lever. Replacement information is not available.