System Inspection

NOTE:
Before Inspection, check to make sure that:
- Gear shift lever is in neutral position (with A/T vehicle, selector lever in "P" range) and that parking brake lever is pulled all the way up.
- Battery voltage is higher than 11V.
- Throttle valve moves smoothly.
- Ambient temperature is higher than 0°C (32°F)





1. Connect scan tool (if it is available) to DLC with ignition switch OFF.
2. Warm up engine to normal operating temperature.
3. Check engine idle speed and "ISC duty" as follows:

When using SUZUKI scan tool:
- Select "Data List" mode on scan tool to check "ISC duty".

When using duty meter:
- Using service wire, ground "Diag switch terminal" in monitor connector and connect duty meter between "Duty output terminal" and "Ground terminal" of monitor connector.

4. Apply load to engine as described below and check that idle speed is kept at specified level and "ISC duty" increases as specified below. At the same time, check that plunger of ISC actuator moves.

Increase of ISC duty when headlight turns ON : About 3.5%
Increase of ISC duty when A/C is operating : About 10%





5. Stop engine and leave it as it is till it cools off. Then check that plunger of ISC actuator moves when ignition switch is turned from OFF to ON once.
If abnormality is found in Steps 4) and 5), check ISC relay, ISC actuator, ISC electric circuit and closed throttle position switch signal. If abnormality is found in Step 4) only, check A/C signal circuit or power steering pressure switch signal circuit first.