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 or replace if necessary and go to "Verification of Vehicle Repair" procedure

NO

▶ Go to "Power Circuit Inspection" procedure.

IG "OFF"

Disconnect MAPS connector

IG "ON"

Measure the voltage between terminal 2 of MAPS harness connector and ground.

a.

Specification : Approx. 5V

Is the measured voltage within specification ?

YES

▶ Go to "Signal Circuit Inspection" of MAPS.

NO

▶ After repairing open or short in circuits and go to "Verification of Vehicle Repair"

IG "OFF"

Disconnect MAPS connector.

IG "ON"

Measure the voltage between terminal 1 of MAPS harness connector and ground.

Is the measured resistance within specification ?

YES

▶ Go to "Ground Circuit Inspection" of MAPS.

NO

▶ After repairing open or short in circuits and go to "Verification of Vehicle Repair"

IG "OFF".

Disconnect MAPS connector.

IG "ON" & ENG "OFF"

Measure the voltage between terminal 2 of MAPS harness connector and chassis ground.

Measure the voltage between terminal 2 and 4 of MAPS harness connector.

a.

Specification : "A" - "B" = : Approx. below 200mV

Is the measured voltage within specification ?

YES

▶ Go to "Component Inspection" procedure.

NO

▶ Repair contact reistance or open in harness and then go to "Verification of Vehicle Repair" procedure.