Toyota 4-Runner 1985 Repair Manual page 125

vsv
vsv
Calif.
EMISSION CONTROL SYSTEMS (CARB ) _ Fuel Evaporative Emission Control
. (EV AP) System EC-25
Ohmmeter
EC0310
Ohmmeter
EC0311
EC0179
Ohmmeter
2. CHECK FOR SHORT CIRCUIT
Using an ohmmeter, check that there is no continuity be-
tween the positive (
+ )
terminal and the VSV body. If a short
circuit is found, repair or replace the VSV.
A03043
3. CHECK FOR OPEN CIRCUIT
Using an ohmmeter, measure the resistance between the
positive
(+)
terminal ar:d the other terminals as shown.
Specified resistance: 38 - 44
n
at 20°C (68°F)
If the resistance is not within specification, replace the
VSV.
INSPECTION OF SPEED SENSOR
1. JACK UP ONE REAR WHEEL TO CLEAR GROUND AND
CHOCK FRONT WHEELS
2. RELEASE PARKING BRAKE
3. SET SHIFT LEVER INTO NEUTRAL
4. UNPLUG WIRING CONNECTOR FROM COMPUTER
Computer location: Left Cowl Side
5. CHECK ON-OFF CYCLES OF SPEED SENSOR
(a) Place the positive
(+)
terminal of the ohmmeter on
the wiring connector terminal and the negative (-)
terminal on ground.
(b) Turn the rear wheel slowly.
(c) Check that the ohmmeter needle deflects consistently
CAUTION: The ohmmeter probe should be inserted from
the rear side of the connector.
If the ohmmeter needle does not deflect, check that the
' - -_ _ _ _ _ _ _ _ _ _ _ _ _ _ E_Cl_09--1
S
speed sensor terminals at the back side of the speedome-
ter air properly connected. If the connection is OK, replace
the speedometer assembly.
6. RECONNECT WIRING CONNECTOR TO COMPUTER