Operation CHARM: Car repair manuals for everyone.
Home >> Ford >> 2009 >> E 450 V8-6.0L DSL Turbo >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Pinpoint Tests >> Test AD: Powertrain Control Module (PCM) Reset
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Test AD: Powertrain Control Module (PCM) Reset

PINPOINT TEST AD: POWERTRAIN CONTROL MODULE (PCM) RESET


Flow Chart:






NOTE: The PCM reset occurs when the PCM momentarily reboots or is turned off and on while the engine is operating. If the condition occurs a single time, the engine momentarily stumbles and the PCM goes through a normal ignition on cycle, including turning the glow plug lamp and glow plugs on, and attempts to validate the accelerator pedal position. If the pedal is not at the idle position when this concern occurs, pedal authority is not allowed by the PCM until the accelerator pedal is released and the engine returns to idle.

This pinpoint test is intended to diagnose the following:
- loose, damaged or corroded connections
- harness circuits: VPWR and PWRGND


PCM Connector


PCM Connector:





-----------------------------------
AD1 : CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)

- Access and record any DTCs
- Record the freeze frame data
- Clear the DTCs.
- Carry out the KOEO and KOER self-test. Quick Test Description
- Are any DTCs present?






----------------------------------
AD2 : CHECK THE VPWR CIRCUITS FOR VOLTAGE

- Ignition OFF.
- PCM connector disconnected.
- Ignition ON, engine OFF.
- Measure the voltage between:







- Check for loose connections. Check for damaged pins or corrosion. Wiggle the harness while taking the measurements.
- Are the voltages greater than 10.5 V?






----------------------------------

AD3 : CHECK THE PWRGND CIRCUITS FOR AN OPEN

- Ignition OFF.
- Measure the resistance between:







- Are the resistances less than 5 ohms?





pro multis · About Operation CHARM