On a 2006, I am wondering which connector (green/black) on the Glow Plug Control Module goes to which side of the engine and within each connector, which circuits go to which cylinder? I have received conflicting info.

 

Here’s my glow plug notes, the troubleshooting instructions are for a specific problem and not directed at you. I think the info you want is here though.

6.0 Glow plug wisdom




Disconnect the four-wire connector to the passenger side glow plug harness (the one with the red lock tab). Using your ohm meter (and the appropriate scale if it doesn't have the auto-range feature), connect the black lead to the passenger side negative battery cable and the red lead to each of the four cavities on the glow plug harness end. You should obtain readings between 0.5 to 2.0 ohms on all four circuits (cylinders #1, #3, #5 and #7).

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Install an inductive ammeter on one bank at one of the two harnesses at the Glow Plug Controller Module (GPCM). You can get up to 200 A at first, but then should stabilize around 35-45 A. Check the other bank with the inductive ammeter. Both sides should read the same. If not, check the amps to each individual glow plug to determine which one (or ones) is bad. Each glow plug should draw 10-12 Amps.




Fuseable link for glow plugs about 4"" down the harness from where it connects to pass side battery. take the tape off. should be going under your a/c line.




All this information comes from the 2006 Service Manual.




Glow plug on time is dependent on oil temperature and altitude. The GPCM will

command the glow plugs on for 1 to 120 seconds. The GPCM does not operate

if the oil temperature is above 55C (131F)

It looks like the GPCM is really 2 units in one box.

Glow plug to ground 0.1~2 Ohms

Glow plug connector to GPCM connector Less that 5 Ohms




Pin #3 on both is the VBattery




Green connector

pin #1 is gp#5

pin #2 is gp#7

pin #6 is gp#1

pin #7 is gp#3

pin 8 goes to the PCM

pin 9 goes to the PCM




Black connector

pin #1 is gp#6

pin #2 is gp#8

pin #6 is gp#2

pin #7 is gp#4

pin 9 goes to the VPwr




The Glow Plug length of operation (up to 120 seconds) depends on oil temperature and the BARO reading. Glow plugs are not operated if the oil temperature is above 131 *F (55*C). The Glow Plug system is PCM controlled. The Wait-To-Start light is initiated by the PCM and is independent of the Glow Plug system. Above 131 *F, the PCM will still bulb-check the Wait-To_Start light. The GPM (GlowPlugMonitor) system (part of the OBDII system) is designed to monitor and detect failed glow plugs or failed wiring in the Glow Plug System.




https://www.ford-trucks.com/forums/1...ce-manual.html




Ford workshop diagnostic guide

https://www.ford-trucks.com/forums/1...ghtmare-9.html (post #135)

 

Thanks. More confirmation on the black being the even numbers. I guess the pin # is referring to the numbering on the pink/red face of the connector.