4.
Is the measured voltage within specification?
YES
a.
Go to "Component Inspection" as follows.
NO
a.
Go to "Check open in harness" as follows.
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.
■ Check voltage
IG "OFF" and disconnect CMPS(B1) connector.
IG "ON" and ENG "OFF"
Measure voltage between power terminal of CMPS(B1) harness connector and chassis ground.
Specification : Approx. 5V
Is the measured voltage within specification?
YES
▶ Go to "Signal Circuit Inspection" procedure.
NO
▶ Repair open in harness, and go to "Verification of Vehicle Repair" procedure.
■ Check voltage
IG "OFF" and disconnect CMPS(B1) connector.
IG "ON" and ENG "OFF"
Measure voltage between signal terminal of CMPS(B1) harness connector and chassis ground.
Specification : Approx. 5V
Is the measured voltage within specification?
YES
Go to "Component Inspection" as follows.
NO
Go to "Check open in harness" as follows.
■ Check open in harness
IG "OFF" and disconnect CMPS(B1) connector and PCM connector.
Measure resistance between signal terminal of CMPS(B1) harness connector and CMPS(B1) signal terminal of PCM harness connector.
Specification : Below 1Ω
Is the measured resistance within specification?
YES
Go to "Ground Circuit Inspection" procedure.
NO
Repair open in harness, and go to "Verification of Vehicle Repair" procedure.
■ Check open in harness
IG "OFF" and disconnect CMPS(B1) connector and then IG "ON".
Measure voltage between signal terminal of CMPS(B1) harness connector and chassis ground.(Measurement "A")
Measure voltage between signal and ground terminals of CMPS(B1) harness connector.(Measurement "B")
Specification : Measurement "A" - Measurement "B" = Approx. below 200mV
Is the measured voltage within specification?
YES
▶ Go to "Component Inspection" procedure.
NO
▶ Repair open or contact resistance in harness, and go to "Verification of Vehicle Repair" procedure.
