Starting System: Other Lexus LX J100

NO-START

1. If a no-start condition exists and battery is known to be good, connect test light or voltmeter between starter solenoid terminal No. 50 and ground. see scheme 8or see scheme 9.
2. Turn ignition switch to START position. If test light or voltmeter does not indicate voltage, check main fusible links and large ampere main fuses in engine compartment relay box. If fusible links and fuses are okay, see «IGNITION SWITCH CONTINUITY TEST»(ref-8281-S03695112502000081800000) and/or «STARTER RELAY TEST»(ref-8281-S32529968742000081800000) under ON-VEHICLE TESTING.

Tacoma & 4Runner

1. Remove clutch start cancel switch. Switch is located on left side of instrument panel. Connect negative lead of ohmmeter to terminal No. 1. (Scheme 5) Check for continuity between clutch start cancel switch terminals No. 1 and 2, and terminals No. 1 and 3. If continuity does not exist, go to next step. If continuity exists, replace clutch start cancel switch.
2. Check for continuity between clutch start cancel switch terminals No. 2 and 3. If continuity exists, replace clutch start cancel switch. If continuity does not exist, check operation of switch by applying battery voltage to switch. Using jumper wires, connect positive battery lead to terminal No. 3 and negative battery lead to terminal No. 1 of clutch start cancel switch.
3. Connect ohmmeter positive lead to terminal No. 2 and negative lead to terminal No. 1 of clutch start cancel switch. Continuity should not exist. Depress clutch start cancel switch. Continuity should exist and indicator light on clutch start cancel switch should be on. If switch does not test as specified, replace switch.

Tundra

1. Locate switch on left side of instrument panel. Remove left lower instrument panel. Disconnect wiring harness connector from switch pigtail connector. Remove switch base from instrument panel. Remove switch from base.
2. Check for continuity between clutch start cancel switch connector terminals No. 1 and 3. (Scheme 6) If continuity exists, replace clutch start cancel switch. If continuity does not exist, go to next step.
3. Using jumper wires, connect positive battery terminal to clutch start cancel switch connector terminal No. 7 and ground terminal No. 5. No continuity should exist between terminals No. 1 and 3. Press switch and ensure switch light illuminates. With switch pressed, continuity should exist between terminals No. 1 and 3.
4. Remove jumper wire from clutch start cancel switch connector terminal No. 5. Ensure continuity does not exist between clutch start cancel switch connector terminals No. 1 and 3. If continuity is not as specified, replace clutch start cancel switch.

Scheme 5

Scheme 6

Celica

1. Deactivate air bag system. See AIR BAG RESTRAINT SYSTEMS article. Disconnect negative battery cable. Remove driver's lower instrument panel cover. Remove upper and lower steering column covers if needed. Locate ignition switch wiring harness 6-pin connector. (Scheme 7)
2. With ignition switch in LOCK position, there should be no continuity between any terminals. With ignition switch in ACC position, there should be continuity between terminals No. 1 and 3. With ignition switch in ON position, there should be continuity between terminals No. 1, 2 and 3, and between terminals No. 5 and 7. With ignition switch in START position, there should be continuity between terminals No. 1 and 2, and between terminals No. 4, 5 and 6. If continuity is not as specified, replace switch.

All Others

1. Deactivate air bag system. See AIR BAG RESTRAINT SYSTEMS article. Disconnect negative battery cable. Remove driver's lower instrument panel cover. Remove upper and lower steering column covers if needed. Locate ignition switch wiring harness 8-pin connector. (Scheme 8)
2. With ignition switch in LOCK position, there should be no continuity between any terminals. With ignition switch in ACC position, there should be continuity between terminals No. 2 and 3. With ignition switch in ON position, there should be continuity between terminals No. 2, 3 and 4, and between terminals No. 6 and 7.
3. With ignition switch in START position, there should be continuity between terminals No. 1, 2 and 4, and between terminals No. 6, 7 and 8. If continuity is not as specified, replace switch.

Scheme 7

Scheme 8

PARK/NEUTRAL SWITCH

Note. If vehicle will not start with shift lever in Park/Neutral position, verify correct park/neutral switch adjustment. If park/neutral switch is correctly adjusted, verify switch continuity.

Adjusting Park/Neutral Switch

Locate park/neutral switch at transmission or transaxle. Loosen park/neutral position switch bolt(s) and verify shift selector is in "N" position. Align switch shaft groove with neutral basic line on switch. Hold switch in position and tighten bolt(s) to specification. See TORQUE SPECIFICATIONS .

Park/Neutral Switch Continuity Check

Disconnect electrical connector from park/neutral switch at transmission or transaxle. Using ohmmeter, check for continuity at specified terminals with gearshift lever in proper positions. (Scheme 9) See PARK/NEUTRAL SWITCH SPECIFICATIONS table. If continuity is not as specified, replace switch.

PARK/NEUTRAL SWITCH SPECIFICATIONS

Scheme 9

Land Cruiser

1. Locate and remove starter relay. Starter relay is marked "ST". See «STARTER RELAY LOCATION»(ref-8281-S37041105582000081800000) table. Using ohmmeter, verify continuity exists between relay terminals No. 3 and 4. See STEP 1. (Scheme 10) Continuity should not exist between terminals No. 1 and 2. If continuity is not as specified, replace relay.
2. Check relay operation by applying battery voltage to terminals No. 3 and 4. See STEP 2. (Scheme 10) Continuity should now exist between terminals No. 1 and 2. If relay does not test as indicated, replace relay.

1. Locate and remove starter relay. Starter relay is marked "ST". See «STARTER RELAY LOCATION»(ref-8281-S37041105582000081800000) table. Using ohmmeter, verify continuity between relay terminals No. 1 and 2. (Scheme 11) Continuity should not exist between terminals No. 3 and 5. If continuity is not as specified, replace relay.
2. Check relay operation by applying battery voltage through terminals No. 1 and 2. (Scheme 11) Continuity should now exist between terminals No. 3 and 5. If relay does not test as indicated, replace relay.

STARTER RELAY LOCATION

Scheme 10

Scheme 11

SOLENOID TESTS

1. Pull-In Coil Test Disconnect field coil lead from terminal "C". Connect jumper wires from negative battery terminal to terminal "C" and to starter housing. When wire is connected from positive battery terminal to terminal No. 50, clutch pinion gear should extend fully. (Scheme 12)or (Scheme 15). If clutch pinion gear does not move, replace solenoid. If clutch pinion gear does move, go to next test.
2. Hold-In Coil Test With battery connected as in previous test and clutch pinion gear still extended, disconnect jumper wire from starter terminal "C". (Scheme 13)or (Scheme 16). Clutch pinion gear should remain extended. If clutch pinion gear does not remain extended, replace solenoid. If clutch pinion gear does remain extended, go to next test.
3. Drive Pinion Return Test Disconnect jumper wire from negative battery terminal to starter housing. (Scheme 14)or (Scheme 17). Pinion gear should now retract. If it does not retract, replace solenoid.

Scheme 12

Scheme 13

Scheme 14

Scheme 15

Scheme 16

Scheme 17

ARMATURE COIL

1. Using ohmmeter, check for continuity between armature coil core and insulation between commutator segments. If continuity is present, replace armature. Check armature for short circuits using a growler. Replace armature as necessary.
2. Check for continuity between segments of commutator. If continuity is not present between any segment, replace armature.

BRUSHES & SPRINGS

1. Check brush length. If length is less than specification, replace brushes. See «STARTER SPECIFICATIONS»(ref-8281-S33087598322000081800000) . If brushes are okay, go to next step.
2. Check brush holders, springs, spring clip and insulation between positive and negative holders. Verify no continuity exists between positive and negative brush holders. Repair or replace components as needed.

COMMUTATOR

1. If commutator surface is dirty or burnt, it can be cleaned with No. 400 grit sandpaper or on a lathe. If commutator runout (out-of-round) is more than .002" (.05 mm), turn commutator on a lathe. If commutator diameter is less than minimum, replace armature. See «STARTER SPECIFICATIONS»(ref-8281-S33087598322000081800000) .
2. Ensure undercut depth between commutator segments are clean, free of debris, and that edges are smooth. Minimum undercut depth is .008" (.20 mm). If undercut depth is less than minimum, use a hacksaw blade to correct to a depth of .008-.024" (.20-.60 mm).

FIELD FRAME (FIELD COIL)

Verify continuity between lead wire and field coil brush lead. If continuity is not present, replace field coil. Verify there is no continuity between field coil end and field frame. If continuity exists, replace or repair field frame.

4-CYLINDER

STARTER SPECIFICATIONS (4-CYLINDER)

V6

STARTER SPECIFICATIONS (V6)

V8

STARTER SPECIFICATIONS (V8)