Signal Circuit Inspection

WARNING: This page is about a different car, the 2004 Kia Rio. However, it is still accessible from the selected car via links, so may be relevant.

Ignition "OFF"
Disconnect ECM connector.
Cranking the engine and measure voltage between 30 of the ECM harness connector and chassis ground.
1. Specification: Approx. B+ (A/T), Approx. 0V (M/T) at cranking
  
  Fig 1: Measuring Voltage Between 30 Of ECM Harness Connector And Chassis Ground
Is voltage within the specification?
YES
1. Check for poor connection between ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
1. Repair open or short in harness and go to "VERIFICATION OF VEHICLE REPAIR " procedure.