87 wiring diagram from the tps going in to the ecm
10-22-2014, 11:10 PM
#1
Racer
Thread Starter
87 wiring diagram from the tps going in to the ecm
Trying to track a possible short in wires. 87 wiring diagram from the tps going in to the ecm Looking for diagram. Looking for my shop manual. It is here some place.
Unable to set TPS
Thanks Steve
Unable to set TPS
Thanks Steve
10-24-2014, 11:36 PM
#4
Racer
Thread Starter
Still no signal at TPS.
The new ECM for some reason turns on cooling fan as soon as key is turned . Suspect this PepBoys ECM is crap.
Datamaster showed missing ecm
The new ECM for some reason turns on cooling fan as soon as key is turned . Suspect this PepBoys ECM is crap.
Datamaster showed missing ecm
10-25-2014, 02:40 AM
#5
Race Director
Check for the 5 volt reference voltage on pin C of the TPS connector (gray wire). That voltage comes from the ECM. The ECM compares the TPS output on pin B to that voltage to determine the throttle position.
I would think that the only way you could get the "no PCM" error is if there is no data coming out on ALDL pin E.
Does your SES light work? It's controlled by the ECM so if it's working the ECM must be at least partially functional.
I would think that the only way you could get the "no PCM" error is if there is no data coming out on ALDL pin E.
Does your SES light work? It's controlled by the ECM so if it's working the ECM must be at least partially functional.
Last edited by Cliff Harris; 10-25-2014 at 02:44 AM.
10-25-2014, 05:08 PM
#6
Racer
Thread Starter
Check for the 5 volt reference voltage on pin C of the TPS connector (gray wire). That voltage comes from the ECM. The ECM compares the TPS output on pin B to that voltage to determine the throttle position.
I would think that the only way you could get the "no PCM" error is if there is no data coming out on ALDL pin E.
Does your SES light work? It's controlled by the ECM so if it's working the ECM must be at least partially functional.
I would think that the only way you could get the "no PCM" error is if there is no data coming out on ALDL pin E.
Does your SES light work? It's controlled by the ECM so if it's working the ECM must be at least partially functional.
checked wires from tps through loom in fuel injector wires on passenger side . Seam good.
sure it is something simple still searching.
last emc kep cooling fan on have a replacement in an hour.
10-25-2014, 06:50 PM
#7
Racer
Thread Starter
New ecm in got signal from wire. Set tps .54. Fan did not come on and stay on happy. Did not want to fire. Taking a break will recheck everything in an hour.
Last edited by AJ123; 10-25-2014 at 07:33 PM.
10-26-2014, 02:50 PM
#8
Racer
Thread Starter