Control Circuit Inspection

■ Check voltage
1. IG "OFF" and disconnect injector connector.
2. IG "ON" and ENG "OFF"
3. Measure voltage between injector control terminal of injector harness connector and chassis ground.
  1. Specification: Approx. 0 V
  Fig 1: Measuring Voltage Between Injector Control Terminal Of Injector Connector And Chassis Ground
  Courtesy of HYUNDAI MOTOR CO.
4. Is the measured voltage within specification?
  YES
  1. Go to "COMPONENT INSPECTION " procedure.
  NO
  1. Go to "Check short to battery in harness" as follows.

■ Check short to battery in harness
1. IG "OFF" and disconnect injector connector and PCM connector.
2. Measure resistance between power and control terminals of injector harness connector.
  1. Specification : Infinite
  Fig 2: Measuring Resistance Between Power And Control Terminals Of Injector Harness Connector
  Courtesy of HYUNDAI MOTOR CO.
3. Is the measured resistance within specification?
  YES
  1. Go to "COMPONENT INSPECTION " procedure.
  NO
  1. Repair short to battery in harness, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.