Toyota 1KZ-TE Repair Manual page 230

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EC- -6
Ohmmeter
2 3
Ohmmeter
1KZ- -TE ENGINE SUP (RM790E)
EMISSION CONTROL
INSPECTION
1. INSPECT EGR VALVE
(a) Remove the EGR valve.
(b) Under the condition of applying the vacuum to the dia-
phragm chamber, check the valve operation.
Less than 13 kPa (100 mmHg, 3.8 in. Hg)
More than 27 kPa (200 mmHg, 8.0 in. Hg)
B12960
(c) When applying more than 67 kPa (500 mmHg, 19 in.Hg)
of the vacuum, check if there is any leakage of the vacu-
um.
(d) Check the valve for sticking and heavy carbon deposits.
If a problem is found, replace it.
(e) Using an ohmmeter, check the resistance between termi-
nals 1 and 2 of the EGR lift sensor.
Resistance: 2.6 kΩ at 20˚C (68˚F)
1
2
B13118
(f) Apply vacuum to the diaphragm chamber and then check
each resistance between terminals of 3 and 2 of the lift
sensor when the valve is fully opened and also when fully
closed.
Resistance:
EGR Valve
Fully opened
Fully closed
B13119
HI NT:
The resistance valve increases in proportion to the opening
angle of the EGR valve.
(g) Reinstall the EGR valve.
2. INSPECT E - - VRV FOR EGR
3. INSPECT ACCE LE RATO R P E DAL P O S I TI O N S E N -
SOR
4. INSPECT ENGINE SPEED SENSOR
ED - - 17)
5. INSPECT INTAKE AIR TEMPERATURE SENSOR
pa ge E D - - 1 3 )
1KZ-TE
- - EXHAUST GAS RECIRCULATION (EGR) SYSTEM (w/
EGR)
Vacuum
0.6 kΩ at 20˚C (68˚F)
2.2 kΩ at 20˚C (68˚F)
(See page ED - - 19)
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EC0IP- -01
EGR Valve
Closed
Open
Resistance
(See page ED - - 11)
(See page
(See
CONTINUED