Toyota 4-Runner 1985 Repair Manual page 418

AT-16 AUTOMATIC TRANSISSON - Electric Control
3
L£CJ
'0
o
ELOOO1
INSPECTION OF ELECTRIC CONTROL
COMPONENTS
1. INSPECT OVERDRIVE RELAY AND SOLENOID
(a) Turn on the ignition switch and the main switch.
(b) Disconnect the connector from the thermo switch.
(c) Repeatedly ground the side of connector with a sub-
wire.
(d) At this time, confirm that an operation sound from the
solenoid and overdrive relay can be heard.
If there is no sound from either the solenoid or relay
I
check
them.
2. INSPECT OVERDRIVE RELAY
(a) Remove the overdrive relay from the pedal bracket.
(b) Using an ohmmeter, check that there is continuity be-
tween terminals 1 and 2.
(c) Apply 12 V battery voltage across terminals 2 and 4.
Using an ohmmeter, check that there is no continui-
ty between terminals 1 and 2.
(d) Install the overdrive relay, to the pedal bracket.