Toyota Avensis ZZT251 2003 Service And Repair Manual page 275

10–40
30
20
10
5
3
2
1
0.5
0.3
0.2
0.1
–20 0 20 40 60 80 100
(–4) (32) (80) (104)
TEMPERATUREYC(YF)
Ohmmeter
AVENSIS REPAIR MANUAL (RM1018E)
ENGINE CONTROL SYSTEM
4.
(a)
NOTICE:
In case of checking the water temperature sensor in the wa-
ter, be careful not to allow water to go into the terminals,
and after checking, wipe out the sensor.
(140) (212)
(176)
A50371
5.
(a)
HINT:
If the resistance is not specified, replace the sensor.
A65174
6.
(a)
(b)
E34090
http://vnx.su
– SFI SYSTEM (1AZ–FSE)
INSPECT ENGINE COOLANT TEMPERATURE
SENSOR
Resistance inspection.
(1) Using an ohmmeter, measure the resistance be-
tween each terminal.
Resistance:
Approx. 20YC (68YF) 2.32 to 2.59kW
Approx. 80YC (176YF) 0.310 to 0.326kW
INSPECT KNOCK SENSOR
Using an ohmmeter, measure the resistance between ter-
minals.
Resistance: 120 to 280 kW at 20YC (68YF)
INSPECT EFI RELAY
Inspect the relay continuity.
(1) Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
Specified condition: Continuity
(2) Check that there is no continuity between terminals
3 and 5.
Specified condition: No continuity
Inspect the relay operation.
(1) Apply battery voltage across terminals 1 and 2.
(2) Using an ohmmeter, check that there is continuity
between terminals 3 and 5.
Specified condition: Continuity