Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 05 20g4b inspec40
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10-2
ENGINE CONTROL SYSTEM - SFI SYSTEM
1006R-03
INSPECTION
1. INSPECT MASS AIR FLOW METER
Air (a) Output voltage inspection.
(1) Apply battery voltage across terminals 1 (+B) and 2
E2 VG +B
THA E2G (E2G).
(2) Connect the positive (+) tester probe to terminal
VG, and negative (-) tester probe to terminal E2G.
5 4 3 2 1 (3) Blow air into the MAF meter, and check that the volt-
age output fluctuates.
(b) Resistance inspection.
(1) Using an ohmmeter, measure the resistance be-
30
20
tween terminals 4 (THA) and 5 (E2).
Resistance:
10
Terminals Resistance Temperature
5 THA - E2 13.6 to 18.4 k -20 _C (-4_F)
RESISTANCE k
3
THA - E2 2.21 to 2.69 k 20_C (68_F)
2
THA - E2 0.493 to 0.667 k 60_C (140_F)
1
2. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE
0.5 ASSY
0.3 (a) Resistance inspection.
0.2
(1) Using an ohmmeter, measure the resistance be-
0.1 tween the terminals.
-20 0 20 40 60 80 100
Resistance: 6.9 to 7.9 at 20_C (68_F)
(-4) (32) (80) (104)(140) (176) (212)
TEMPERATURE_C(_F) A50378
1 2 (b) Movement inspection.
Valve (1) Connect the positive (+) lead from the battery to ter-
minal 1 and negative (-) lead to terminal 2, and
check the movement of the valve.
NOTICE:
Confirm the valve moves freely and does not stick in any
position.
HINT:
B01689 Dirt or foreign objects in the oil line cause the subtle pressure
leaks in the valve. The pressure leak will cause the camshaft to
advance. This condition will usually set a DTC.
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2233
10-3
ENGINE CONTROL SYSTEM - SFI SYSTEM
3. INSPECT ACCELERATOR PEDAL ROD ASSY
(a) Resistance inspection
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
6 5 4 3 2 1 Resistance:
Terminal Resistance
3 (VPA2) - 5 (EP1) 5.0 k or less
VPA1 EP1 VCP1 VPA2 EP2 VCP2 6 (VPA1) - 2 (EP2) 5.0 k or less
A75258 4 (VCP1) - 5 (EP1) 2.25 to 4.75 k
1 (VCP2) - 2 (EP2) 2.25 to 4.75 k
4. INSPECT THROTTLE BODY ASSY
(a) Resistance inspection
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
6 5 4 3 2 1 Resistance:
Terminals Resistance Temperature
2 (M+) - 1 (M-) 0.3 to 100 20_C (68_F)
VTA VC VTA2 E2 M+ M-
A75258
5. INSPECT E.F.I. ENGINE COOLANT TEMPERATURE
SENSOR
(a) Resistance inspection.
(1) Using an ohmmeter, measure the resistance be-
tween each terminal.
Resistance:
2.32 to 2.59 k at Approx. 20_C (68_F)
0.310 to 0.326 k at Approx. 80_C (126_F)
30
20 NOTICE:
RESISTANCE k
10 While checking the engine coolant temperature sensor in
5 water, be careful not to allow water to go into the terminals,
3
2 and after checking, dry the sensor.
1
0.5
0.3
0.2
0.1
-20 0 20 40 60 80 100
(-4) (32) (80) (104) (140) (176) (212)
TEMPERATURE_C(_F) A50371
6. INSPECT KNOCK SENSOR
(a) Continuity inspection.
(1) Using an ohmmeter, measure the resistance be-
tween the terminals.
Resistance: 120 to 280 k at 20_C (68_F)
HINT:
If the resistance is not specified, replace the sensor.
A65174
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2234
10-4
ENGINE CONTROL SYSTEM - SFI SYSTEM
7. INSPECT EFI RELAY
(a) Continuity inspection.
(1) Using an ohmmeter, check for continuity between
each terminal.
Between terminal Specified condition
1-2 Continuity
No continuity
3-5 Continuity
(Voltage applied terminals 1 and 2)
E12471
8. INSPECT CIRCUIT OPENING RELAY
(a) Continuity inspection.
(1) Using an ohmmeter, check for continuity between
each terminal.
Between terminal Specified condition
1-2 Continuity
No continuity
3-5 Continuity
(Voltage applied terminals 1 and 2)
E12471
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 2235
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