3.
Has a problem been found?
YES
a.
Repair as necessary and go to "Verification of vehicle Repair" procedure
NO
a.
Go to "Power Circuit Inspection" procedure.
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 connectors for looseness, poor connection, bending, corrosion, contamination,deterioration, or damage.
Has a problem been found?
YES
Repair as necessary and go to "Verification of vehicle Repair" procedure
NO
Go to "Power Circuit Inspection" procedure.
Key "ON" & ENG "OFF".
Measure voltage between terminal 2 of the Vehicle speed sensor harness connector and chassis ground. (Connect wheel speed sensor connector)
Specification : Approx. B+
Is the measured voltage within specification ?
YES
Go to "Signal Circuit Inspection" procedure.
NO
Repair open or short to ground in harness, and go to "Verification of Vehicle Repair" procedure.
Check short to ground in harness.
Key "OFF".
Disconnect PCM connector.
Disconnect wheel speed sensor connector.
Measure resistance between terminal 3 of the vehicle speed sensor harness connector and chassis ground.
Specification : Infinite
Is the measured resistance within specifications?
YES
Go to "Check open in harness" as follows.
NO
Repair short to ground in harness, and go to "Verification of Vehicle Repair" procedure.
Check open in harness
Key "OFF".
Disconnect PCM connector.
Disconnect wheel speed sensor connector.
Measure resistance between terminal 59 of PCM/ECM harness connector and terminal 3 harness cnnector.
Specification : Approx. below 1Ω
Is the measured resistance within specifications?
YES
Go to "Component inspection" procedure.
NO
Repair Open circuit and then, go to "Verification of Vehicle Repair" procedure.
Key "OFF".
Disconnect VSS connector.
Key "ON" & ENG "OFF".
Measure the voltage between terminal 3 of VSS harness connector and chassis ground.(A)
Measure the voltage between terminal 3 and 1 of VSS harness connector.(B)
Specification : "A" - "B" = Below 200mV
Is the measured voltage within specification ?
YES
Go to "Component Inspection" procedure.
NO
Repair Open in signal circuit and then, go to "Verification of Vehicle Repair" procedure.
