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?
 | ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
 | ▶ 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. |
IG KEY OFF.
Disconnect ETC Connector.
Measure resistance between ETC Output 1 terminal of ETC harness connector and chassis ground.
Specification : Infinite
Is resistance within specification?
| ▶ Go to next procedure. |
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
IG KEY OFF.
Disconnect ETC connector.
IG KEY ON.
Measure voltage between ETC Output 1 terminal of ETC harness connector and chassis ground.
Specification : Approx. 0 V
Is voltage within specification?
| ▶ Go to next procedure. |
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
IG KEY OFF.
Disconnect ETC harness connector and PCM harness connector.
Measure resistance between both ends of ETC Output 1 line.
Specification : Below 1Ω.
Is resistance within specification?
| ▶ Go to next procedure. |
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
IG KEY OFF.
Disconnect PCM and ETC Connector.
Measure resistance between ETC Output 2 terminal of ETC harness connector and chassis ground.
Specification : Infinite
Is resistance within specification?
| ▶ Go to next procedure. |
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
IG KEY OFF.
Disconnect ETC connector.
IG KEY ON.
Measure voltage between ETC Output 2 terminal of ETC harness connector and chassis ground.
Specification : Approx. 0 V
Is voltage within specification?
| ▶ Go to next procedure. |
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
IG KEY OFF.
Disconnect ETC harness connector and PCM harness connector.
Measure resistance between both ends of ETC Output 2 line.
Specification : Below 1Ω.
Is resistance within specification?
| ▶ Go to next procedure. |
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
