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Signal Circuit Inspection

NOTE: Check for open or short circuit in harness. Refer to "SIGNAL WAVEFORM & DATA " procedure

Check for short to battery in signal circuit
1. Disconnect ECM connector
2. Ignition "ON" & Engine "OFF"
3. Measure voltage between terminal 1 of the sensor harness connector and chassis ground
  Specification: Approx. 0V
4. Is voltage within the specification?
  YES
  - Go to 2
  NO
  - Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure
Check for open in signal circuit
1. Ignition "OFF"
2. Measure resistance between terminals 1 of the sensor harness connector and 41 of the ECM harness connector
  Specification: Approx. 0Ω
3. Is resistance within the specification?
  YES
  - Go to TERMINAL AND CONNECTOR INSPECTION
  NO
  - Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure