3.
Has a problem been found ?
 | ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
 | ▶ 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 ?
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
| ▶ Go to "Power Circuit Inspection" procedure. |
IG "OFF" and disconnect CMPS(B2-Intake) connector.
IG "ON".
Measure voltage between power terminal of CMPS(B2-Intake) harness connector and chassis ground.
Specification : Approx. 5V
Is the measured voltage within specification ?
| ▶ Go to "Signal Circuit Inspection" procedure. |
| ▶ Repair open or short to ground inharness, and go to "Verification of Vehicle Repair" procedure. |
IG "OFF" and disconnect CMPS(B2-Intake) connector.
IG "ON".
Measure voltage between signal terminal of CMPS(B2-Intake) harness connector and chassis ground.
Specification : Approx. 5V
Is the measured voltage within specification ?
| ▶ Go to "Check short in harness" as follows. |
| ▶ Go to "Check open in harness" as follows. |
IG "OFF" and disconnect CMPS(B2-Intake) connector and ECM connector.
Measure resistance between signal and power terminals of CMPS(B2-Intake) harness connector.
Specification : Infinite
Is the measured resistance within specification ?
| ▶ Go to "Check short to ground in harness" as follows. |
| ▶ Repair short in harness, and go to "Verification of Vehicle Repair" procedure. |
IG "OFF" and disconnect CMPS(B2-Intake) connector and ECM connector.
Measure resistance between signal terminal of CMPS(B2-Intake) harness connector and chassis ground.
Specification : Infinite
Is the measured resistance within specification ?
| ▶ Go to "Component Inspection" procedure. |
| ▶ Repair short to ground in harness, and go to "Verification of Vehicle Repair" procedure. |
IG "OFF" and disconnect CMPS(B2-Intake) connector and ECM connector.
Measure resistance between signal terminal of CMPS(B2-Intake) harness connector and CMPS(B2-Intake) signal terminal of ECM harness connector.
Specification : Below 1Ω
Is the measured resistance within specification ?
| ▶ Go to "Ground Circuit Inspection" procedure. |
| ▶ Repair open in harness, and go to "Verification of Vehicle Repair" procedure. |
IG "OFF" and disconnect CMPS(B2-Intake) connector and then IG "ON".
Measure voltage between signal terminal of CMPS(B2-Intake) harness connector and chassis ground.(Measurement "A")
Measure voltage between signal and ground terminals of CMPS(B2-Intake) harness connector.(Measurement "B")
Specification : Voltage difference between measurement "A" and "B" is below 200mV.
Is the measured voltage within specification ?
| ▶ Go to "Component Inspection" procedure. |
| ▶ Repair contact resistance or open in harness and go to "Verification of Vehicle Repair" procedure. |
