2.
Measure voltage between terminal 2 of the valve harness connector and chassis ground.
Specification : Approx. B+
Many malfunctions in the electrical system are caused by poor harness(es) 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.
Ignition "ON" & Engine "OFF".
Measure voltage between terminal 2 of the valve harness connector and chassis ground.
Specification : Approx. B+
Is voltage within the specification?
YES
▶ Go to "Signal Circuit Inspection" procedure.
NO
▶ Check for an open or short to ground in the power supply circuit between the ICA valve and main relay. Repair as necessary and go to "Verification of Vehicle Repair" procedure.
Check for open in signal harness.
Ignition "OFF".
Disconnect PCM connector.
Measure resistance between terminals 1 of the valve harness connector and 80 of the PCM harness connector.
Specification : Approx. 0Ω
Is resistance within the specification?
YES
▶ Go to next step as below.
NO
▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.
Check for short to ground in signal harness.
Measure resistance between terminal 1 of valve harness connector and chassis ground.
Specification : Infinite
Is resistance within the specification?
YES
▶ Check for poor connection between PCM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "Verification of Vehicle Repair" procedure.
NO
▶ Repair open or short in harness and go to "Verification of Vehicle Repair" procedure.
