Aldl....which ports are for torque converter lockup??
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salvageV6
Daily Driver
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- May 25, 2001
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Yup.
A is top right GND
F is top left solenoid coil
A is top right GND
F is top left solenoid coil
Thanks Allan....thought so. I've made a switch from a 3A 125V push on/push off button with 2 leads...one lead goes to TL and one to TR. My DVM shows the switch makes and opens the leads....yet the TCC will not come on.
Neither in 3rd gear nor 4th...
It locks up normally with the street chip...but I can't make it lock with the switch with either street or race chips (made by Jim Testa)
????
Thanks,
Bob
Neither in 3rd gear nor 4th...
It locks up normally with the street chip...but I can't make it lock with the switch with either street or race chips (made by Jim Testa)
????
Thanks,
Bob
salvageV6
Daily Driver
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- May 25, 2001
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One connector and one splice between the ALDL pin F port and the ECM connection.
You could try your ground from Pin A to the ECM direct at the tan/blk wire found on connector A7 at the ECM and see if it locks up then.
Or an easier place perhaps would be Pin D of the TCC solenoid connector Tan/Blk wire at the transmission itself. Ground that and it should lock up via your switch.
One test possibly would be an ohmmeter between the Pin F terminal in the ALDL port and the ECM A7 Tan/Blk wire or the same Tan/Blk wire on the TCC solenoid Pin D of the connector.
You should read a short from those ports.
Key off no power of course when doing those resistance checks.
You could try your ground from Pin A to the ECM direct at the tan/blk wire found on connector A7 at the ECM and see if it locks up then.
Or an easier place perhaps would be Pin D of the TCC solenoid connector Tan/Blk wire at the transmission itself. Ground that and it should lock up via your switch.
One test possibly would be an ohmmeter between the Pin F terminal in the ALDL port and the ECM A7 Tan/Blk wire or the same Tan/Blk wire on the TCC solenoid Pin D of the connector.
You should read a short from those ports.
Key off no power of course when doing those resistance checks.
Can a switch be connected between the 2 ports on the ALDL and switched on when I'm on the highway, or will it fry something?
I replaced my solenoid and the pressure switches and it still won't lockup on the highway. I have checked the brake switch adjustment on the brake pedal too.
I'd like to fix it since I'm selling my 87 GN but don't want to pour $ into it.
salvageV6
Daily Driver
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- May 25, 2001
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Yes it provides the same ground the ECM should to engage the lockup solenoid.
The brake switch interrupts the +12 volt line to the solenoid the ECM and lockup switches interrupt the ground path.
If you suspect any wiring just put a meter on the tranny 4 pin plug on the purple and TAN/BLK wires on Pins A and D of that plug.
Key ON engine OFF when you throw the new switch you should read +12 between the two pins connector UNPLUGGED from the tranny.
Or use a small dash lamp type bulb to test it on those two pins.
The brake switch interrupts the +12 volt line to the solenoid the ECM and lockup switches interrupt the ground path.
If you suspect any wiring just put a meter on the tranny 4 pin plug on the purple and TAN/BLK wires on Pins A and D of that plug.
Key ON engine OFF when you throw the new switch you should read +12 between the two pins connector UNPLUGGED from the tranny.
Or use a small dash lamp type bulb to test it on those two pins.
Turbo Loyd
Member
- Joined
- May 26, 2001
- Messages
- 343
This may come in handy
I have a FAST Classic ECM in the GN and use a switch between terminals F to A all the time for manual lockup
I have used an Light Emitting Diode between the F to A terminals, that is a good way to know the circuit feeding power to the torque convertor solenoid, the connections to the torque convertor engage solenoid and the ground to engage circuit is continuous.
I have a FAST Classic ECM in the GN and use a switch between terminals F to A all the time for manual lockup
I have used an Light Emitting Diode between the F to A terminals, that is a good way to know the circuit feeding power to the torque convertor solenoid, the connections to the torque convertor engage solenoid and the ground to engage circuit is continuous.
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