Checking Feed Back System; Checking Idle And Wide Open Micro Switches - Suzuki Samurai 1986 Service Manual

Checking feed back system

1) Operate (turn ON) cancel switch or check
switch located at the place shown in below
figure.
1. Cancel switch (U.S.A.)
Check switch (Canada)
2. Instrument panel
3. Steering column
holder bracket
4. Steering wheel
Fig. 5-3- 15 Cancel switch or check switch
2) Turn ignition switch
engine.
At this time, "CHECK
light (should not flash).
If it does not light, check electric circuit of
the light, namely light for blow off and lead
wire for disconnection.
Fig. 5-3- 16 "CHECK ENGINE" light
3) After lighting of the light is confirmed, start
engine and warm it up to normal operating
temperature.
4) When engine is warmed up, run engine at
1,500 - 2,000 rpm. In this state, make sure
that "CHECK ENGINE"lightflashes. Flashing
of light proves that system is in good condition.
If light does not flash, it can be caused by
one of the following. Check them and replace
or adjust as necessary.
1
ON without running
ENGINE" light should
Defective oxygen sensor
l
Defective mixture control solenoid valve
l
Defective carburetor or maladjusted idle
l
mixture
Defective thermal switch
l
Disconnected or loosely connected electric
l
lead wires of emission control systems
Defective ECM
l
Defective micro switches (idle and wot)
l
5)After making sure that "CHECK ENGINE"
light flashes, turn cancel switch OFF. Light
should go off.
6) Stop engine.

Checking idle and wide open micro switches

Check idle and wide open micro switches
according to the following procedures.
1. Warm up engine to normal operating tempe-
rature and stop engine.
2. For this check, use check terminal coming
from the lower right of instrument panel as
shown.
Connect negative prod of ohmmeter to check
terminal and positive prod to body.
eck terminal
3. Turn ignition switch to "ON" position.
4. Observe ohmmeter indicator reaction to make
sure for the following movement for each
throttle valve position.
3. Instrument panel
4. Glove box lid
5-23