6529513

Terminal and Connector Inspection

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 Vehicle Repair" procedure

Go to "W/Harness Inspection" procedure.

Power Supply Circuit Inspection

1. Check for open in harness

Ignition "OFF"

Disconnect SMARTRA.

Ignition "ON" & Engine "OFF"

Measure voltage value between terminal "5" of SMARTRA and chassis ground.

Specification : 9~16V

Is the measured voltage within specifications ?

YES

Go to "Signal Circuit Inspection" procedure.

Check for open or short in harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Signal Circuit Inspection

1. Check for open in harness

Ignition "OFF"

Disconnect SMARTRA.

Measure resistance between terminal "5" of SMARTRA and terminal "18" of ECM/PCM

Specification : 1 Ω or less

Is the measured voltage within specifications ?

YES

Go to "Check for open in harness" as below

Check for open in harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

2. Check for short in harness

Ignition "OFF"

Disconnect SMARTRA.

Ignition "ON" & Engine "OFF"

Measure voltage value between terminal "5" of SMARTRA and chassis ground.

Specification :Approx. 5.48V

Is the measured resistance within specifications ?

YES

Go to "Signal circuit Inspection" procedure

Check for short in harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Ground Circuit inspection

1. Check for open in ground harness

Ignition "OFF"

Disconnect SMARTRA.

Measure resistance between terminal "3" of SMARTRA and chassis ground.

Specification : 1 Ω or less

Is the measured resistance within specifications ?

YES

Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.

Check for open in harness. Repair as necessary and go to "Verification of Vehicle Repair" procedure.