Inspection Procedures

CHECK DTC RELATING TO MAFS/TPS
1. Connect a Hi-Scan (Pro) to the data link connector.
2. Turn ignition to ON position and monitor other DTCs.
Is any DTC relating to MAFS or TPS set?

No: Go to next

Yes: Do all repairs associated with those codes before proceeding with this procedure.
PROBLEM VERIFICATION
1. Warm up engine to normal operating temperature.
2. Using Hi-Scan (Pro), monitor MAFS signals while changing throttle position.
- Refer to SPECIFICATIONS for more information.
  Does signal change normally according to TPS signal?
No: Go to next

Yes: Problem is intermittent or was repaired and engine control module memory was not cleared. Proceed with INTERMITTENT PROBLEM PROCEDURE .
CHECK TPS RESISTANCE
1. Turn ignition switch to OFF and disconnect TPS connector.
2. Measure resistance between the terminals 1 and 2 of TPS connector.
  - 0.71~1.38 kohm at idle position
  - 2.2~3.4 kohm at WOT
3. Measure resistance between the terminals 2 and 3 of TPS connector.
Fig 1: Measuring Resistance Between Terminals Of TPS Connector
Courtesy of HYUNDAI MOTOR CO.
- 1.6~2.4 kohm at all throttle position
  Is resistance within specification?
Yes: Go to next

No: Replace TPS.
CHECK MAFS, TPS, AND ECM CONNECTORS
1. Thoroughly check connectors for loose, poor connection, bent, corrosion, contamination, deterioration, or damage.
Are all connectors good?

Yes: Go to next

No: Repair or replace it.
CHECK AIR CLEANER
1. Check air cleaner for dirt, blockage, or damage.
Is air cleaner good?

Yes: Go to next

No: Clean or replace it.
CHECK INTAKE SYSTEM FOR LEAKAGE
1. Check entire air intake system for leaks or blockages such as:
- Throttle body
- PCV valve
- Intake manifold
- Gasket between intake manifold and surge tank
- Seals between intake manifold and fuel injectors
- Seal between surge tank and PCV pipe
Is entire air intake system good?

Yes: Go to next

No: Repair or replace it.
CHECK MAFS SIGNAL AGAIN
1. Reconnect the ECM and MAFS connectors.
2. Connect a Hi-Scan (Pro) to the data link connector.
3. Start the engine and monitor the MAFS signals.
- Refer to SPECIFICATIONS for more information.
  Is signal within specification?
Yes: Proceed with ECM PROBLEM PROCEDURE .

No: Replace MAFS.