Signal Circuit Inspection

Check voltage
1. IG "OFF" and disconnect ECTS connector.
2. IG "ON" and ENG "OFF"
3. Measure voltage between terminal 3 of ECTS harness connector and chassis ground.
  Specification : Approx. 5V
4. is the measured voltage within specification ?
  YES
  - Go to "GROUND CIRCUIT INSPECTION " procedure.
  NO
  - If voltage is 0V, go to " 2Check open in harness" as follows. If it is more than 5.1 V, go to " 2Check short to battery in harness" as follows
Check short to battery in harness
1. IG "OFF" and disconnect ECTS connector and PCM connector.
2. Measure resistance between terminals 2 and 3 of ECTS harness connector.
  Specification : Infinite
3. Is the measured resistance within specification?
  YES
  - Go to "COMPONENT INSPECTION " procedure.
  NO
  - Repair short to battery in harness, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
Check open in harness
1. IG "OFF" and disconnect ECTS connector and PCM connector.
2. Measure resistance between terminal 3 of ECTS harness connector and terminal 7 of PCM harness connector.
  Specification : Below 1Ω
3. Is the measured resistance within specification?
  YES
  - Go to "GROUND CIRCUIT INSPECTION " procedure.
  NO
  - Repair open in harness, and go to "VERIFICATION OF VEHICLE REPAIR " procedure.