PGM-FI - OBD
Overview
The on-board diagnostic detects failures in the emission control system. If any of the failure items in the table is detected by it, the failure is notified to the driver via the MIL in the gauge control module.
For details of the failure items, refer to the DTC troubleshooting index.
Two Drive Cycle Detection Method
When a malfunction occurs in the signal from a sensor or from another control unit in the first drive cycle, the powertrain control module (PCM) stores a pending DTC. The MIL does not come on at this time. If the failure continues in the second drive cycle, the PCM stores a confirmed DTC and turns on the MIL.
HDS (Honda Diagnostic System)
The data link connector (DLC) is under the driver's side of the dashboard. The DLC is used to connect the HDS or other scan tool to the vehicle for system diagnosis and troubleshooting.
| Terminal No. | Terminal name | Purpose |
|---|---|---|
| 4 | GND | HDS Ground Circuit |
| 5 | GND | HDS Communication Signal Ground Circuit |
| 6 | DIAG-CAN_H | DIAG-CAN Communication Circuit (PGM-FI System Communication) |
| 7 | K LINE | Except PGM-FI System Communication Circuit |
| 9 | SCS | SCS Short Circuit |
| 14 | DIAG-CAN_L | DIAG-CAN Communication Circuit (PGM-FI System Communication) |
| 15 | L-LINE | Except PGM-FI System Communication Circuit |
| 16 | +B BACK UP | HDS Power Circuit |