LML Grid heater help

dooitorbust

New member
Jul 23, 2019
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Anyone have any troubleshooting info on the intake heater? Truck only has 80,000km on it and and it’s throwing a P154A code for intake heater feedback circuit. Harness looks good and isn’t rubbed. Kinda smells like burnt plastic around the heater. Any help would be appreciated.
 

dooitorbust

New member
Jul 23, 2019
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You should be able to check continuity through it and to ground.



There is continuity between the main power stud and the. Body of the heater. I don’t have a schematic for what each wore on the plug is. I’m assuming black is ground.
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And what’s the trick to getting the intake tube off?

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clrussell

pro-procrastinator
Sep 23, 2013
5,906
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Twist the collar on the engine side of the ic tube and then pull. It’s very simple and easy