Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
Thoroughly check all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
Has a problem been found?
![]() | ▶ Repair as necessary and go to "Verification of vehicle Repair" procedure. |
![]() | ▶ Go to "ETC Motor Circuit Inspection" procedure. |
Ignition "OFF".
Refer to "Shop Manual" and disconnect Throttle Body connector.
Ignition "ON".
Measure voltage between Pin No. 5 (Motor +) terminal of Throttle Body Sensor harness connector and chassis ground.
Specification : Approx. 1.9 V
Is the measured value within specification?
![]() | ▶ Go to next procedure. |
![]() | ▶ Repair open or short in ETC Motor(+) circuit between Throttle Body and PCM and then go to "Verification of vehicle Repair" procedure. |
Ignition "OFF".
Disconnect Battery (-) terminal.
Refer to "Shop Manual" and disconnect Throttle Body and PCM connector.
Measure voltage between Pin No. 5 (Motor -) terminal of Throttle Body Sensor harness connector and Pin No. 6 (Motor -) terminal of PCM harness connector.
Specification : Approx. below 1 Ω
Is the measured value within specification?
![]() | ▶ Go to "Component Inspection" procedure. |
![]() | ▶ Repair open or short in ETC Motor(-) circuit between Throttle Body and PCM and then go to "Verification of vehicle Repair" procedure. |