4.
Verify TPS voltage to change while raising or lowering simulation voltage with scan tool within 0.5~3.5 V
a.
Specification: If the data is changeable as simulation voltage changes,it’s OK
Turn ignition switch to OFF and connect ECM and TPS harness connector.
Start engine and warm up to operating temperature.
Probe(+) : TPS harness connector NO1.
Probe(-) : Chassis ground.
Verify TPS voltage to change while raising or lowering simulation voltage with scan tool within 0.5~3.5 V
Specification: If the data is changeable as simulation voltage changes,it’s OK
Is TPS data changeable Specification?
YES
Temporarily install a known good TPS and check for proper operation
If problem is corrected, replace TPS
NO
ECM internal faulty
Repair as necessary and go to "Verification of Vehicle Repair" procedure
