Question about 1999 Chevrolet Malibu
These vehicles are different depending on the motor.I looked up the 4.3 because the 5.3 does not show a t.p.s.cause it has electronic throttle controls.You did not specify the motor.The connectors on the pcm are c1 and c2.C1 is blue and c2 is green.The gray wire from the pcm to the tps is the reference wire and is in slot 8 of the c2 connector.The dark blue wire is the signal wire and is also in the c2 connector in slot 24 of the connector.The black wire is in the c1 connector and is the low reference signal and is in slot 60 of the c1 connector.Check the connectors on the pcm very carefully being that they are out on the front of the left fender they tend to get a lot of dirt and grime on them.If you do get a new one or used one you will have to get it programmed to your vehicle.Let me know if you need more help and what size engine is in your vehicle.I checked for any service bulletins and did not find any.Hope this helps.Good luck.
Posted on Feb 04, 2010
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Posted on Jan 02, 2017
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Oct 01, 2011 | Cars & Trucks
TPS not mounted securely.
TPS circuit short to ground or another wire.
Damaged computer (PCM).
to fix this code you can try this:
Carefully check the throttle position sensor (TPS), wiring connector, and wiring for breaks, etc. Repair or replace as necessary
Check the voltage at the TPS (refer to a service manual for your vehicle for specific information). If the voltage is too low that is indicative of a problem. Replace if necessary.
If recently replaced the TPS may need to be adjusted. On some vehicles the installation instructions call for the TPS to be properly aligned or adjusted, consult a repair manual for specifics.
If there are no symptoms at all, the problem may be intermittent and clearing the code may resolve the issue temporarily. If this is the case then you should definitely check the wiring to be sure it's not rubbing on anything, grounding, etc. The code may come back.
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