Page 1049 of 3051
3 CHECK THROTTLE DRUM OPERATION
Confirm that throttle drum moves to contact the stopper.
LEC267
OK or NG
OK©GO TO 6.
NG©GO TO 4.
4 CHECK ACCELERATOR WIRE INSTALLATION
1. Stop engine.
2. Check accelerator wire for slack.
OK or NG
OK©GO TO 5.
NG©Adjust accelerator wire. Refer to FE-3, ªAdjusting Accelerator Wireº.
5 CHECK THROTTLE VALVE OPERATION
1. Remove intake air ducts.
2. Check throttle valve operation when moving throttle drum by hand.
OK or NG
OK©Retighten the throttle drum fixing nuts.
NG©Clean the throttle body and throttle valve.
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONSR20DE
Basic Inspection (Models with Throttle Opener) (Cont'd)
EC-624
Page 1050 of 3051
6 CHECK THROTTLE POSITION SWITCH CLOSED POSITION-I
NOTE:
Always check ignition timing before performing the following.
1. Warm up engine to normal operating temperature.
2. Stop engine.
3. Remove the vacuum hose connected to the throttle opener.
4. Connect suitable vacuum hose to vacuum pump as shown below.
SEF793WA
5. Apply vacuum [more than þ40.0 kPa (þ400 mbar, þ300 mmHg, þ11.81 inHg)] until the throttle drum is free from the
throttle opener rod.
With CONSULT-II©GO TO 7.
Without CONSULT-II©GO TO 13.
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONSR20DE
Basic Inspection (Models with Throttle Opener) (Cont'd)
EC-625
Page 1051 of 3051
7 CHECK THROTTLE POSITION SWITCH CLOSED POSITION-II
With CONSULT-II
1. Turn ignition switch ªONº.
2. Select ªCVTº, then select ªCLOSED THL/SWº in ªDATA MONITORº mode with CONSULT-II.
3. Read ªCLOSED THL/SWº signal under the following conditions.
+Insert a 0.05 mm (0.0020 in) and 0.15 mm (0.0059 in) feeler gauge alternately between stopper and throttle drum as
shown in the figure and check the signal.
LEC270
SEF059Y
ªCLOSED THL/SWº signal should remain ªONº while inserting 0.05 mm (0.0020 in) feeler gauge.
ªCLOSED THL/SWº signal should remain ªOFFº while inserting 0.15 mm (0.0059 in) feeler gauge.
OK or NG
OK©GO TO 10.
NG©GO TO 8.
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONSR20DE
Basic Inspection (Models with Throttle Opener) (Cont'd)
EC-626
Page 1052 of 3051
8 ADJUSTMENT THROTTLE POSITION SWITCH CLOSED POSITION-I
With CONSULT-II
1. Loosen throttle position sensor fixing bolts.
2. Confirm that proper vacuum is applied. Refer to test No. 6. During adjustment, vacuum should be applied.
3. Insert 0.05 mm (0.0020 in) feeler gauge between stopper and throttle drum as shown in the figure.
LEC270
4. Turn throttle position sensor body counterclockwise until ªCLOSED THL/SWº signal switches to ªOFFº.
SEF867X
SEF060Y
©GO TO 9.
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONSR20DE
Basic Inspection (Models with Throttle Opener) (Cont'd)
EC-627
Page 1053 of 3051
9 ADJUSTMENT THROTTLE POSITION SWITCH CLOSED POSITION-II
With CONSULT-II
1. Temporarily tighten sensor body fixing bolts as follows.
+Gradually move the sensor body clockwise and stop it when ªCLOSED THL/SWº signal switches from ªOFFº to
ªONº, then temporarily tighten sensor body fixing bolts.
SEF867X
2. Make sure two or three times that the signal is ªONº when the throttle valve is closed and ªOFFº when it is opened.
3. Remove 0.05 mm (0.0020 in) feeler gauge then insert 0.15 mm (0.0059 in) feeler gauge.
4. Make sure two or three times that the signal remains ªOFFº when the throttle valve is closed.
5. Tighten throttle position sensor.
6. Check the ªCLOSED THL/SWº signal again.
The signal remains ªOFFº while closing throttle valve.
OK or NG
OK©GO TO 10.
NG©GO TO 8.
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONSR20DE
Basic Inspection (Models with Throttle Opener) (Cont'd)
EC-628
Page 1054 of 3051
10 RESET THROTTLE POSITION SENSOR IDLE POSITION MEMORY
With CONSULT-II
NOTE:
Always warm up engine to normal operating temperature. If engine is cool, the throttle position sensor idle posi-
tion memory will not be reset correctly.
1. Confirm that proper vacuum is applied. Refer to Test No. 6.
2. Attach blind cap to vacuum port from which vacuum hose to throttle opener was disconnected.
3. Start engine.
4. Warm up engine to normal operating temperature.
5. Select ªENGINEº and then select ªCLSD THL POSº in ªDATA MONITORº mode.
6. Stop engine. (Turn ignition switch ªOFFº.)
7. Turn ignition switch ªONº and wait at least 10 seconds.
SEF864V
8. Turn ignition switch ªOFFº and wait at least 10 seconds.
9. Repeat steps 7 and 8 until ªCLSD THL POSº signal changes to ªONº.
SEF061Y
©GO TO 11.
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONSR20DE
Basic Inspection (Models with Throttle Opener) (Cont'd)
EC-629
Page 1055 of 3051
11 CHECK IGNITION TIMING-I
With CONSULT-II
1. Turn ignition switch ªOFFº.
2. Release vacuum from throttle opener.
3. Remove vacuum pump and vacuum hose from throttle opener.
4. Reinstall original vacuum hose to throttle opener securely.
5. Start engine and warm it up to normal operating temperature.
6. Select ªIGNITION TIMING ADJº in ªWORK SUPPORTº mode with CONSULT-II.
7. Touch ªSTARTº.
8. Check ignition timing at idle using a timing light.
SEF284G
Ignition timing:
15ɱ2É BTDC (in ªPº or ªNº position)
OK or NG
OK©GO TO 12.
NG©1. Adjust ignition timing by turning distributor.
2. GO TO 12.
12 CHECK IGNITION TIMING-II
With CONSULT-II
Touch ªMODEº or ªBACKº. (Cancel ªIGNITION TIMING ADJº in ªWORK SUPPORTº mode.)
Check ignition timing at idle using a timing light.
SEF284G
Ignition timing:
15ɱ2É BTDC (in ªPº or ªNº position)
OK or NG
OK©GO TO 26.
NG©GO TO 19.
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONSR20DE
Basic Inspection (Models with Throttle Opener) (Cont'd)
EC-630
Page 1056 of 3051
13 CHECK THROTTLE POSITION SWITCH CLOSED POSITION-II
Without CONSULT-II
1. Disconnect closed throttle position switch harness connector.
2. Check continuity between closed throttle position switch terminals5and6under the following conditions.
SEF769Z
+Insert the 0.05 mm (0.0020 in) and 0.15 mm (0.0059 in) feeler gauge alternately between the stopper and throttle drum
as shown in the figure.
LEC270
ªContinuity should existº while inserting 0.05 mm (0.0020 in) feeler gauge.
ªContinuity should not existº while inserting 0.15 mm (0.0059 in) feeler gauge.
OK or NG
OK©GO TO 16.
NG©GO TO 14.
TROUBLE DIAGNOSIS Ð BASIC INSPECTIONSR20DE
Basic Inspection (Models with Throttle Opener) (Cont'd)
EC-631