Pinpoint Test H: The Vehicle Does Not Start

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

H1 CHECK THE STARTING SYSTEM FOR CORRECT VOLTAGE
- Key in OFF position.
- Disconnect: PCM C175.
- Key in ON position.
- Measure the voltage between the PCM C175 pin 44, circuit 325 (DB/OG), harness side and ground.
  
  Fig 1: Checking Starting System For Correct Voltage
  Courtesy of FORD MOTOR CO.
- Is the voltage less than 8 volts?
1. Yes : DIAGNOSE the starting system. REFER to STARTERS .
2. No : GO to H2.
H2 CHECK THE STARTING SYSTEM GROUND
- Measure the voltage between the PCM C175 pin 44, circuit 325 (DB/OG), harness side and ground.
  
  Fig 2: Checking Starting System Ground
  Courtesy of FORD MOTOR CO.
- Is the voltage less than 2 volts?
1. Yes : DIAGNOSE the starting system. REFER to STARTERS .
2. No : GO to H3.
H3 CHECK FOR CORRECT PCM OPERATION
- Disconnect all the PCM connectors.
- Check for:
  - Corrosion
  - Pushed-out pins
- Connect all the PCM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
1. Yes : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS .
  REPROGRAM the encoded ignition keys. REFER to KEY PROGRAMMING USING DIAGNOSTIC EQUIPMENT . CLEAR the DTCs. REPEAT the self-test.
2. No : The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.