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 PCM and APS harness connector.
IG KEY ON.
Measure resistance between APS1 power terminal of APS 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 APS harness connector.
IG KEY ON.
Measure voltage between APS1 power terminal of APS harness connector and chassis ground.
Specification : Approx. 5V
Is voltage within specification?
| ▶ Go to next procedure. |
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
IG KEY OFF.
Disconnect PCM and APS harness connector.
IG KEY ON.
Measure resistance between APS1 signal terminal of APS 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 APS harness connector and PCM harness connector.
Measure resistance between both ends of APS1 signal line.
Specification : Below 1Ω.
Is resistance within specification?
| ▶ Go to next procedure. |
| ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure. |
