3.
Has a problem been found?
 | ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. |
 | ▶ Go to "Power Circuit Inspection" procedure. |
Many malfunctions in the electrical system are caused by poor harness(es) and terminal condition. 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 then go to "Verification of Vehicle Repair" procedure. |
| ▶ Go to "Power Circuit Inspection" procedure. |
IG "ON"
Measure voltage between the battery terminal(+) and power terminal of the TPMS ECU harness connector.
Specification : Approx. below 0.2V
Is the measured value within specifications?
| ▶ Go to "Ground Circuit Inspection" procedure. |
| ▶ Check for open or blown fuse referring to "Circuit Diagram". ▶ Repair open or short in power circuit between battery and TPMS ECU harness connector and then go to "Verification of vehicle Repair" procedure. |
IG "OFF".
Disconnect TPMS ECU connector.
Measure resistance between ground terminal of the TPMS ECU harness connector and chassis ground.
Specification : Approx. below 1Ω
Is the measured value within specifications?
| ▶ Substitute with a known-good TPMS ECU and check for proper operation. If problem is corrected, replace TPMS ECU and then go to "Verification of Vehicle Repair" procedure. |
| ▶ Repair open or short in ground circuit between TPMS ECU harness connector and chassis ground, and then go to "Verification of vehicle Repair" procedure. |
