Monitor Description

Function Explanation (DTC Detection Outline) (200 Pin Type) 

• If the ECM detects an open circuit in the wiring harness between A/F sensor terminal C6-5 and ECM terminal C27-81 (COM wiring harness), it stores a DTC. In addition, when there is an open circuit in the wiring harness between A/F sensor terminal C6-5 and ECM terminal C27-81 (COM wiring harness), the A/F sensor terminal C6-6 (B+ terminal) becomes unstable. At this time, the ECM determines an open circuit in the wiring harness (COM wiring harness) between A/F sensor terminal C6-5 and ECM terminal C27-81 and stores a DTC.
• If the A/F sensor does not activate, monitoring cannot occur because the A/F sensor element has an insulation property which keeps it at a specific temperature range or less.

Function Explanation (DTC Detection Outline) (186 Pin Type) 

• If the ECM detects an open circuit in the wiring harness between A/F sensor terminal C35-5 and ECM terminal C28-4 (COM wiring harness), it stores a DTC. In addition, when there is an open circuit in the wiring harness between A/F sensor terminal C35-5 and ECM terminal C28-4 (COM wiring harness), the A/F sensor terminal C35-6 (B+ terminal) becomes unstable. At this time, the ECM determines an open circuit in the wiring harness (COM wiring harness) between A/F sensor terminal C35-5 and ECM terminal C28-4 and stores a DTC.
• If the A/F sensor does not activate, monitoring cannot occur because the A/F sensor element has an insulation property which keeps it at a specific temperature range or less.