Toyota Land Cruiser 1988 Repair Manual page 129

EC-20
EMISSION CONTROL SYSTEMS- Air Injection (AI) System
Resistor
..,...,._--r:r'
(10
Q)
EC275S
5. CHECK ON-OFF CYCLES OF SPEED SENSOR
6.
(a) Place the positive (+)terminal of the ohmmeter on
the wiring connector terminal and the negative (-)
terminal on ground.
(b) Turn the rear wheel.
(c) Check that the ohmmeter needle deflects consis-
tently.
CAUTION: The ohmmeter probe should be in-
serted from the rear side of the connector.
If the ohmmeter needle does not deflect, check that the
speed sensor terminals at the back side of the speedome-
ter air properly connected. If the connection is OK, re-
place the speedometer assembly.
RECONNECT WIRING CONNECTOR TO
COMPUTER
INSPECTION OF WATER TEMPERATURE
SENSOR
(See page Fl-77)
INSPECTION OF THROTTLE POSITION
SENSOR
{See page Fl-68)
INSPECTION OF AIR FLOW METER
{See page Fl-66)