OBD-II Drive Mode

OBD-II DRIVE MODE

- Performing the Drive Mode inspects the OBD-II system for proper operation and must be performed to ensure that no additional DTCs are present.
- During the Drive Mode, the following systems are inspected:
- HO2S heater
- HO2S
- TWC
- Fuel system, Misfire and EVAP system

CAUTION:
- While performing the Drive Mode, always operate the vehicle in a safe and lawful manner.
- When the WDS or equivalent is used to observe monitor system status while driving, be sure have another technician with you, or record the data in the WDS or equivalent using the PID/DATA MONITOR AND RECORD function and inspect later.

NOTE:
- Vehicle speed and engine speed detected by the PCM may differ from that indicated by the speedometer and tachometer. Use the WDS or equivalent to monitor vehicle speed.
- If the OBD-II system inspection is not completed during the Drive Mode, the following causes are considered:
- The OBD-II system detected a malfunction.
- The Drive Mode procedure was not completed correctly.

- Disconnecting the battery will reset the memory. Do not disconnect the battery during and after the 1 Mode.
- The WDS or equivalent can be used at anytime through the course of the Drive Mode to monitor the completion status. Monitoring can be done by viewing the ON BOARD SYSTEM READINESS menu.

Mode 1 (PCM Adaptive Memory Produce Drive Mode)
1. Start the engine and warm it up completely.
2. Verify the following conditions and correct if necessary:
- All accessory loads (A/C, headlights, blower fan, rear window defroster) are off.
- Initial ignition timing and idle speed are within specification.

3. Perform no load racing at the engine speed of 2,500-3,500 rpm for more than 15 s.
4. Continuously perform no load racing at the engine speed of 4,500-5,000 rpm for more than 15 s
5. Idle the engine for more than 60 s after the cooling fan stopped.
6. Turn the ignition switch off.

Mode 3 (HO2S heater, HO2S, and TWC Repair Verification Drive Mode)
1. Perform the Mode 1 first.
2. Verify that all accessory loads (A/C, headlights, blower fan, rear window defroster) are off.




3. Drive the vehicle as shown in the graph. The driving condition before driving at constant speed is not specified.
4. Stop the vehicle and access the ON BOARD SYSTEM READINESS to inspect the Drive Mode completion status.
- If completed, RFC changes from No to Yes.
- If not completed, turn the ignition switch off, then go back to Step 3.

5. Access the DIAGNOSTIC MONITORING TEST RESULTS to inspect the monitor results.
- If MEAS are not within specification, repair has not been completed.

6. Verify that no DTCs are available.

Mode 6 (EVAP System Repair Verification Drive Mode)

NOTE: If the Mode 6 cannot be performed (you cannot drive the vehicle under the Mode 6 condition), perform the "Evaporative System Test" as an alternative.

1. Verify that all of the following PIDs are within the stated specifications. All PIDs must be within specifications before the engine is started to initiate the evaporative system test.
- BARO: More than 72.3 kPa {542 mmHg, 21.3 inHg} - IAT:5 - 35 °C {41 - 95 °F}
- FLI: 15 - 85%
- B+: 10.9 - 14.6 V

2. Clear the DTC from the PCM memory using the WDS or equivalent.
3. Start the engine and idle it for more than 10s, then turn the ignition switch off.
4. Leave the vehicle is this condition for more than 5 hours.
5. Start the engine and idle it for more than 15 min.
6. Drive the vehicle at the engine speed of 65 - 80 km/h {40 - 50 mph} for more than 5 min.
7. Stop the vehicle and turn the ignition switch off.
8. Leave the vehicle in this condition for more than 10 min.
9. Start the engine.
10. Access the ON BOARD SYSTEM READINESS to inspect the Drive Mode completion status.
- If completed, RFC changes from No to Yes.
- If not completed, turn the ignition switch off, then go back to Step 1.

11. Access the DIAGNOSTIC MONITORING TEST RESULTS to inspect the monitor results.
- If MEAS are not within specification, repair has not been completed.

12. Verify that no DTCs are available.