Signal Circuit Inspection

Check for Open in Signal Circuit

1. Ignition "OFF".
2. Disconnect ECM connector.
3. Measure resistance between terminal 3 of the FTPS harness connector and 15 of the ECM harness connector.
   1. Specification: Approx. 0Ω
      Fig 1: Measuring Resistance Between Terminal 3 Of FTPS Harness Connector And 15 Of ECM Harness Connector

      
4. Is resistance within the specification?

   YES

   1. Go to the next step.

   NO

   1. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

Check for Short to Ground in Signal Circuit

1. Ignition "OFF".
2. Measure resistance between terminal 3 of the FTPS harness connector and chassis ground.
   1. Specification: Infinite
      Fig 2: Measuring Resistance Between Terminal 3 Of FTPS Harness Connector And Chassis Ground

      
3. Is voltage within the specification?

   YES

   1. Go to "COMPONENT INSPECTION " procedure.

   NO

   1. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.