A7, TCC pin has voltage??
Thread Starter
Joined: May 2001
Posts: 364
Likes: 2
From: WI north
Car: 88 Firebird
Engine: 302 SBC
Transmission: T-5
Axle/Gears: 4.27 Dana 44
A7, TCC pin has voltage??
85 TA TPI 870 ecm
Torque converter not locking. Parked with the key on I am getting 8.8 volts on the A7 TCC pin. Is this correct??
Torque converter not locking. Parked with the key on I am getting 8.8 volts on the A7 TCC pin. Is this correct??
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: A7, TCC pin has voltage??
The ECM grounds that pin to enable the lockup solenoid.
RBob.
Thread Starter
Joined: May 2001
Posts: 364
Likes: 2
From: WI north
Car: 88 Firebird
Engine: 302 SBC
Transmission: T-5
Axle/Gears: 4.27 Dana 44
Re: A7, TCC pin has voltage??
Yep, I got that ok. I was getting that voltage from the ECM. Figured it had to be wrong so I took the ecm apart. Fried chip on the board. No codes so it must be isolated to the TCC. My next pondering is why did it fry to begin with? Is something bad with the solenoid? Hate to have it happen right away again.
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