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I've checked the red wire and there's no voltage at all. Could anyone please post up the wiring diagram for the MAF? or any other suggestions would be appreciated.
Thanks
I've checked the red wire and there's no voltage at all. Could anyone please post up the wiring diagram for the MAF? or any other suggestions would be appreciated.
Thanks
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Last edited by lucky131969; Apr 2, 2025 at 09:15 PM.
I've checked the red wire and there's no voltage at all. Could anyone please post up the wiring diagram for the MAF? or any other suggestions would be appreciated.
Thanks
Most of GM MAF wiring is all the same…pink is normally ignition feed (Terminal D)…are you checking with key ON ??
With key ON is fuse 19 powered ??…that is the first check to do !!..also check PCM fuse 16…that is control side feed for Ignition Relay 42…if all are good you will need to check terminal E3 on the C1 connector at the fuse box…why are you needing to check for power at the MAF ??
With key ON is fuse 19 powered ??…that is the first check to do !!..also check PCM fuse 16…that is control side feed for Ignition Relay 42…if all are good you will need to check terminal E3 on the C1 connector at the fuse box…why are you needing to check for power at the MAF ??
fuse 19 was blown! I haven’t tried to start the car because the neighbors would not appreciate.
Tomorrow I’ll report back after running.
Car was acting up at the end of the 2024 Autocross season. After scanning with HPtuners it showed no signal from the MAF. So I replaced with the Halltech Stinger and uploaded a tune from a friend that just tuned an LS7 with a like cam, I figured it would be a good starting point.
still no signal so I started checking power to the plug.
I’ll post an update tomorrow. Thanks for the help
fuse 19 was blown! I haven’t tried to start the car because the neighbors would not appreciate.
Tomorrow I’ll report back after running.
Car was acting up at the end of the 2024 Autocross season. After scanning with HPtuners it showed no signal from the MAF. So I replaced with the Halltech Stinger and uploaded a tune from a friend that just tuned an LS7 with a like cam, I figured it would be a good starting point.
still no signal so I started checking power to the plug.
I’ll post an update tomorrow. Thanks for the help
If the fuse was blown you may want to investigate why…fuses just don’t blow for no reason.
Any of these circuits could have caused fuse 19 to blow…if this diagnosis is over your head find an auto electric shop in your area if don’t are unfamiliar with short to ground testing.
No power to MAF
