Check the leads, couplers, and connectors for stains, rust, moisture, etc.
1. Disconnect:
2. Check:
Moisture → Dry with an air blower.
Rust/stains → Connect and disconnect several times.

3. Check:
Loose connection → Connect properly.
NOTE:
If the pin "1" on the terminal is flattened, bend it up.

4. Connect:
NOTE:
Make sure all connections are tight.
5. Check:

NOTE:
If there is no continuity, clean the terminals.
When checking the wire harness, perform steps (1) to (3).
As a quick remedy, use a contact revitalizer available at most part stores.

Circlips
Special toolsAdjusting the engine idling speed
The engine idling speed must be
checked and, if necessary, adjusted as
follows at the intervals specified in the
periodic maintenance and lubrication
chart.
The engine should be warm before
making this adjustment.
Remove panel A.
Check the engine idling speed
and, if necessary, ...
Intake air temperature sensor
1. Check:
Intake air temperature sensor resistance
Out of specification Replace
the throttle
body.
a. Connect the pocket tester ( ×
1k) to the
throttle body sensor assembly coupler as
shown.
Positive tester probe
brown/white "1"
Negative tester probe
gray/black ...
Intake air pressure sensor
1. Check:
Intake air pressure sensor output voltage
Out of specification Replace the throttle
body.
a. Connect the pocket tester (DC 20 V) to the
throttle body sensor assembly coupler as
shown.
Positive tester probe
pink/white "1"
Negative tester probe
gray/black "2"
...