3.
Has a problem been found?
YES
a.
Repair as necessary and go to "Verification of vehicle Repair" procedure
NO
a.
Go to "Signal 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 "Signal Circuit inspection" procedure.
Signal circuit voltage check
Ignition "OFF"
Disconnect CA sensor connector
Ignition "ON" & Engine "OFF"
Measure voltage between terminal "3" of sensor harness connector and chassis ground
Specification : Approx. 5V
Is the measured voltage within specifications ?
YES
Go to "Check for short in harness" as bleow
NO
Check for open or short to battery in signal harness. Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
Check for short in harness
Ignition "OFF"
Disconnect CS sensor connector and ECM connector
Measure resistance between terminal "1" and "3"of the sensor harness connector
Specification : infinite
Is the measured resistance within specifications ?
YES
Go to "Ground circuit inspection" procedure
NO
Check for short to power in signal harness. Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
Ignition "OFF"
Disconnect CA sensor connector
Measure voltage between terminal 1 of harness connector and chassis ground.
Measure voltage between terminal 1 and 2 of harness connector.
Specification : "A" - "B" = Below 200mV
Is the measured resistance within specifications ?
YES
Go to "Component inspection" procedure
NO
Check for open in ground harness. Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
