Ground Circuit Inspection

Ignition "OFF"
Disconnect Acceleration sensor connector.
Ignition "ON" & Engine "OFF"
Measure voltage or resistance between terminal 2 of sensor harness connector and chassis ground.
Specification: below 0.5V or below 1Ω

Fig 1: Measuring Voltage Between Terminal 2 Of Sensor Harness Connector And Chassis Ground
Courtesy of HYUNDAI MOTOR CO.
Is measure voltage or resistance within Specification?
YES
- Substitute with a known-good Acceleration sensor and check for proper operation. If the problem is corrected, replace Acceleration sensor and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Open circuit between Acceleration sensor harness connector and PCM harness connector.
- Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NOTE:
In case, when acceleration sensor connector is disconnected, the resistance at terminal 2 is infinite.
- Possible cause: Open in ground circuit between terminal 17 of PCM and terminal 2 of acceleration sensor.