Your Vehicle: 2001 Ford Escort ZX2 L4-2.0L DOHC VIN 3
 
Vehicle » Powertrain Management » Computers and Control Systems » Testing and Inspection » Pinpoint Tests » FH: Generator Load Input (GLI) - Pinpoint Test  
 
 
  FH: Generator Load Input (GLI) - Pinpoint Test  
 

FH: Generator Load Input (GLI)

FH: Introduction See: FH: Generator Load Input (GLI) - Introduction

FH1 P1244, P1245 OR P1246: CHECK IF ANY BATTERY OR CHARGING SYSTEM CONCERNS ARE PRESENT

  • Check generator drive belt condition and tension.
  • Verify that the battery is at proper charge.
  • Verify that there are no symptoms associated with the charging system.

Does the battery and charging system appear OK?
Yes

  • GO to FH2

.

No

  • REFER to Battery and Charging.

FH2 CHECK GENERATOR LOAD INPUT (GLI) CIRCUIT FOR SHORT TO POWER IN HARNESS

  • Disconnect voltage regulator.
  • Disconnect PCM.
  • Key on.
  • Measure voltage between PCM harness connector Pin 59 and ground.

Is voltage less than 1.0 volts?
Yes

  • KEY OFF. GO to FH3

.

No

  • REPAIR short circuit.

FH3 CHECK GLI CIRCUIT FOR SHORT TO GROUND

  • Disconnect scan tool from DLC.
  • Measure resistance between PCM harness connector Pin 59 and ground.

Is resistance greater than 10,000 ohms?
Yes

  • GO to FH4

.

No

  • REPAIR short circuit.

FH4 CHECK FOR OPEN GLI CIRCUIT

  • Measure resistance of the GLI circuit between PCM harness connector Pin 59 and the voltage regulator harness connector.

Is resistance less than 5.0 ohms?
Yes

  • GO to FH5

.

No

  • REPAIR open circuit.

FH5 CHECK PCM

  • Reconnect PCM.
  • Key on, engine off.
  • Measure voltage between the GLI circuit at the voltage regulator harness connector and ground.

Is voltage greater than 2.0 volts?
Yes

  • REFER to Charging System-General Information to verify operation of voltage regulator and

generator.

No