Monitors, Trips, Drive Cycles and Readiness Codes

OBD-II DRIVE CYCLE
All kinds of diagnostic trouble codes (DTC's) can be monitored by carrying out a short drive in accordance with the following six drive cycle patterns. In other words, doing such a drive regenerates any kind of trouble which involves illuminating the Service Engine Soon/Malfunction Indicator Lamp and verifies the repair procedure has eliminated the trouble (the Service Engine Soon/Malfunction Indicator Lamp is no longer illuminated).

1. Catalytic converter monitor (P0421, P0431).
Test conditions and main points to note:
1. Conduct test drives in a manner that will ensure all the following conditions are met.
1. Outside air temperature: -10 °C (14 °F) or higher.
2. Selector lever position: D range.
3. A/C switch: OFF.

Drive Cycle Pattern:

2. The following drive pattern (from start up to where the ignition is turned off) completes one trip monitor. (Time required is approximately 20 minutes)

<>1: Start the engine and accelerate quickly until speed reaches 72 km/h (45 mph) or more.
<>2: Monitoring preparatory period: Drive for 300 seconds or more while maintaining speed within 72 to 97 km/h (45 - 60 mph). It is permissible to brake (for a few seconds) during this period.
<>3: Decelerate until speed falls to between 56 and 64 km/h (35 - 40 mph).
*4: Monitoring period: Keep throttle open at a uniform level (minimize throttle variation) and drive for 90 seconds or more at 56 to 64 km/h (35 - 40 mph).
<>5: Fully close the throttle and decelerate (it is permissible to brake during this period). After maintaining deceleration for 10 seconds, accelerate quickly until speed reaches 56 to 64 km/h (35 - 40 mph). Subsequently, repeat steps *4 and <>5 six times. (Ensure that steps *4 and <>5 have been fully completed a total of six times.)
<>6: Decelerate and stop the vehicle. After stopping the vehicle, turn off the ignition.

2. Heated oxygen sensor monitor (P0132, P0133, P0134, P0137, P0138, P0139, P0152, P0153, P0154, P0157, P0158, P0159)
Test conditions and main points to note:

1. Conduct test drives in a manner that will ensure all the following conditions are met:
1. Engine coolant temperature: 80 °C (176 °F) or higher (with the engine fully warmed up).
2. Outside air temperature: -10 °C (14 °F) or higher.
3. Selector lever position: D range.

Drive Cycle Pattern:

2. The following drive pattern (from start up to when the ignition is turned off) completes one trip monitor (Time required is approximately 5 minutes.)

<>1: After the engine is completely warmed up, turn off the ignition.
<>2: Start the engine and accelerate quickly until speed reaches 56 - 64 km/h (35 - 40mph).
*3: Monitoring period: Keep throttle open at a uniform level (minimize throttle variation) and drive for 120 seconds or more at 56 - 64 km/h (35 - 40 mph). Drive steadily during this period, without sudden turning of the steering wheel.
<>4: Decelerate and stop the vehicle. After stopping the vehicle, turn off the ignition.

3. Exhaust gas recirculation (EGR) system monitor (P0401)
Test conditions and main points to note:

1. Conduct test drives in a manner that will ensure all the following conditions are met:

1. Engine coolant temperature: 80 °C (176 °F) or higher (with the engine fully warmed up).
2. Outside air temperature: 5 °C (41 °F) or higher.
3. Selector lever position: D range. (4) A/C switch: OFF.

Drive Cycle Pattern:

2. The following drive pattern (from start up to when the ignition is turned off) completes one trip monitor (Time required is approximately 10 minutes.)

<>1: After the engine is completely warmed up, turn off the ignition.
<>2: Start the engine and accelerate quickly until speed reaches 56 - 64 km/h (35 - 40mph).
*3: Monitoring period: When engine speed is between 2,000 and 3,000 rpm, fully close the throttle and decelerate until the engine speed reaches approximately 900 rpm without braking. Do not manipulate the steering wheel or switch any lights on or off during this period.
<>4: Accelerate to between 56 - 64 km/h (35 - 40mph) and drive for 20 seconds or more. (An interval of 20 seconds or more is required between one monitoring (ending with deceleration) and the next monitoring (ending with deceleration). Ensure that steps 3 and 4 have been fully completed a total of 8 times..
<>5: Decelerate and stop the vehicle. After stopping the vehicle, turn off the ignition.

4. Fuel trim monitor (P0171, P0172, P0174, P0175)
Test conditions and main points to note:

1. Conduct test drives in a manner that will ensure all the following conditions are met:
1. Engine coolant temperature: 80-97 °C (176-207 °F) or higher (with the engine fully warmed up).
2. Outside air temperature: -10 °C (14 °F) or higher.
3 Selector lever position: D range.

Drive Cycle Pattern:

2. The following drive pattern (from start up to when the ignition is turned off) completes one trip monitor (Time required is approximately 35 minutes.)

<>1: After the engine is completely warmed up, turn off the ignition.
<>2: Start the engine and accelerate quickly until speed reaches 89 - 97 km/h (55 - 60 mph).
*3: Monitoring period: Drive for 30 seconds or more while maintaining speed between 89 - 97 km/h (55 - 60 mph). Then drive steadily and continuously for 120 seconds or more. (Accelerate and decelerate slightly during the 120 second period. Braking is permissible, but avoid sudden acceleration or deceleration.)
<>4: Decelerate and stop the vehicle. After stopping the vehicle, turn off the ignition.

5. Evaporative Emission Control System Leak Monitor (P0442, P0451,P0452, P0453, P0455)
Test conditions and main points to note:

1. Conduct test drives in a manner that will ensure all the following conditions are met:
1. Engine coolant temperature: 45 °C (113 °F) or less (The engine is stopped before the test drive is started).
2. Atmospheric temperature: 5 °C (41 °F) or more, 45 °C (113 °F) or less.
3. Selector lever position: D range

Drive Cycle Pattern:

2. One trip monitor will be completed by driving according to the steps below (from start to ignition switch "OFF"). (Time required is approximately eight minutes.)
1. Confirm that the engine coolant temperature and atmospheric temperature both satisfy the conditions given in item 1 above. (Engine stopped.)
2. Start the engine and accelerate to 89 - 97 km/h (55 - 60mph).
3. Monitor preparation period: Drive for200 seconds or more while maintaining vehicle speed between 89 - 97 km/h (55 - 60 mph).
4. Drive on a flat area for 150 seconds or more while maintaining the vehicle speed between 89 -97 km/h (55 - 60 mph).During this time, continue driving while keeping the throttle opening angle constant (while keeping the throttle fluctuation amount as small as possible.) Monitor the scan tool display of vehicle speed and throttle opening angle in this state.
5. Return the vehicle to the workshop, then turn the ignition OFF.

6. Other monitors
- Misfire (P0300, P0301, P0302, P0303, P0304, P0305, P0306)
- Evaporative emission control system (P0443, P0446)
- Idle air control system (P0506, P0507)
- Manifold differential pressure sensor (P1400)
- Excessive time to enter closed loop fuel control (P0125, P0128)
- Throttle position sensor (P0121, P0122, P0123)
- Barometric pressure sensor (P0106, P0107, P0108)
- Intake air temperature sensor (P0111, P0112, P0113)
- Crankshaft position sensor (P0335)
- Camshaft position sensor (P0340)
- Battery backup battery circuit malfunction (P1603)
- Volume air flow sensor (P0101, P0102)
- Engine coolant temperature sensor (P0116, P0117, P0118)
- Closed throttle position switch (P0510)
- Power steering pressure sensor circuit range/performance (P0551)
- O2 sensor circuit (P0132, P0133, P0134, P0137, P0138, P0139, P0152, P0153, P0154, P0157, P0158, P0159)
- O2 sensor heater circuit (P0135, P0141, P0155, P0161)
- EGR solenoid (P0401, P0403)
- Evaporative emission purge solenoid (P0441, P0443)
- Evaporative emission ventilation solenoid (P0446)
- Injector circuit (P0201, P0202, P0203, P0204, P0205, P0206)

Test conditions and main points to note:
1. Conduct test drives in a manner that will ensure all the following conditions are met:
1. Engine coolant temperature: 80 °C (176 °F) or higher (with the engine fully warmed up).
2. Outside air temperature: 5 °C (41 °F) or higher.
3. Selector lever position: D range.