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 all connectors(and connections) for looseness, bending, corrosion, contamination, deterioration, and/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".
Disconnect AVH Switch connector.
IG "ON" & ENG "OFF".
Measure voltage between power terminal of AVH Switch harness connector and chassis ground.
Specification : B+
Is the measured value within specifications ?
| ▶ Go to "Signal Circuit Inspection" procedure. |
| ▶ Repair open or short in power circuit between HECU and AVH Switch harness connector and then go to "Verification of vehicle Repair" procedure. |
Ignition "OFF".
Disconnect AVH Switch connector.
Ignition "ON".
Back probe and measure voltage between signal terminal of AVH Switch harness connector and chassis ground.
Specification : Approx. 0V
Connect AVH Switch connector.
Measure voltage between signal terminal of AVH Switch harness connector and chassis ground.
Specification : AVH Switch Operated B+ / AVH Switch Not Operated Approx. 0V
Is measured value within specification?
| ▶ Go to "Component Inspection" procedure. |
| ▶ Repair open or short in signal circuit between HECU and AVH Switch harness connector and then go to "Verification of vehicle Repair" procedure. |
