2002 Suzuki XL-7 PlusFACTORY OEM SERVICE PROCEDURE

Ignition Timing: AERIO

  1. Ensure transmission is in Neutral or Park. Set parking brake. Remove timing hole cover. See Fig 1
  2. Connect Suzuki scan tool to Data Link Connector (DLC). DLC is located under left side of instrument panel. See Figure . Start engine and allow it to reach normal operating temperature. Turn all accessories off. Ensure idle speed is correct. See IDLE SPEED SPECIFICATIONS  . On scan tool, select MISC mode and fix ignition timing by selecting FIXED SPARK mode. Set timing light to No. 1 ignition coil harness. Aim timing light at timing marks. See Figure . Ignition timing should be 4-6 degrees BTDC (at idle speed). If timing is not as specified, go to next step.
  3. If ignition timing is not within specification, loosen CMP sensor bolts and turn CMP sensor until timing marks line up. See Figure . With engine idling, end FIXED SPARK MODE. Use timing light to verify that ignition timing varies more or less of initial ignition timing (about 8 degrees), indicating proper operation of electronic timing system. Also, check that timing advances when increasing engine speed. If results are not satisfactory, check the following for proper operation:
    • Throttle Position Sensor
    • Test Switch Signal Circuit
    • Engine Control Module
    If problem is found, repair or replace as necessary. After repair, retest system.
Fig 1: Identifying Timing Hole Cover (Aerio)
G00174061Courtesy of SUZUKI OF AMERICA CORP.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.