Monitors, Trips, Drive Cycles and Readiness Codes
OBD-II DRIVE CYCLESAll kinds of diagnostic trouble codes can be monitored by carrying out a short drive in accordance with the following 6 drive cycle patterns. In other words, doing such a drive allows to regenerate any kind of trouble which involves illuminating the Malfunction Indicator Lamp and to check the repair procedure has eliminated the trouble (the Malfunction Indicator Lamp is no longer illuminated).
CAUTION: Two mechanics should always be in the vehicle when carrying out a drive test.
CATALYTIC CONVERTER MONITOR DRIVE CYCLE
(DTCs P0420, P0421)
1. All of the following requirements should be met when carrying out a drive test.
(1) Atmospheric temperature: -10°C (14°F) or more
(2) Condition of A/T:
- Selector lever position: D range
- Overdrive switch: ON
(3) A/C switch: OFF
2. One trip monitor will be completed by driving according to the steps below (from start to switch on). It will take 20 minutes.
*1: Start the engine and accelerate gradually to 72 km/h (45 mph) or more
*2: Preparation period; continue driving between 72 and 97 km/h (45 and 60 mph) for 300 seconds. Brake may be applied for this period if it continues for only a few seconds.
*3: Decelerate to 56-64 km/h (35-40 mph).
*4: Drive between 56 and 64 km/h (35 and 40 mph) at a constant throttle angle (by not moving the throttle pedal as much as possible) for 90 seconds or more during monitor.
*5: Decelerate with the throttle valve fully closed (Brake may be applied for this period). After the vehicle is being decelerated for ten seconds, accelerate gradually to 56-64 km/h (35-40 mph).
*6: Decelerate and stop the vehicle. Then turn oft the ignition switch.
EVAPORATIVE SYSTEM LEAK MONITOR DRIVE CYCLE
(DTCs P0442, P0450, P0455)
All of the following requirements should be met when carrying out a drive test.
(1) Engine coolant temperature: 45°C (113°F) or less (before starting drive test, engine stopped)
(2) Atmospheric temperature: 5°C (41°F) or more, 45°C (113°F) or less
(3) Condition of A/T
- Selector lever position: D range
- Overdrive switch: ON
2. One trip monitor will be completed by driving according to the steps below (from start to switch on). (It takes approx. 8 minutes.)
*1: Check that both engine coolant temperature and air intake temperature satisfy requirement 1 (engine stopped).
*2: Monitor preparation period; Start the engine and accelerate to 89 - 97 km/h (55 - 60 mph). For this period, acceleration, deceleration, or braking may be carried out.
Continue driving between 89 and 97 km/h (55 and 60 mph) for 200 seconds or more. For this period, braking or throttle operation may be carried Out if vehicle speed is within the specified value.
<>3: Drive between 89 and 97 km/h (55 and 60 mph) at a constant throttle angle (by not moving the throttle pedal as much as possible) for 150 seconds or more during monitor. Moreover, do not turn the steering wheel suddenly.
*4: Decelerate and stop the vehicle. After stop, turn off the ignition switch.
HEATED OXYGEN SENSOR MONITOR DRIVE CYCLE
(DTCs P0130, P0136)
1. Test requirements/procedure
(1) Engine coolant temperature: 80°C (176°F) or more (Engine fully warmed up)
(2) Atmospheric temperature: -10°C (14°F) or more
(3) Condition of A/T:
Selector lever position: D range
- Overdrive switch: ON
2. One trip monitor will be completed by driving according to the steps below (from start to switch off). It will take 5 minutes.
*1: After warming up the engine, turn off the ignition switch.
*2: Start the engine and accelerate to 56-64 km/h (35-40 mph).
<>3: Drive between 56 and 64 km/h (35 and 40 mph) at a constant throttle angle (by not moving the throttle pedal as much as possible) for 120 seconds or more during monitor. Moreover, do not turn the steering wheel suddenly.
*4: Decelerate and stop the vehicle. Then turn off the ignition switch.
EGR SYSTEM MONITOR DRIVE CYCLE
(DTC P0400)
1. All of the following requirements should be met when carrying out a drive test.
(1) Engine coolant temperature: 80°C (176°F) or more (Engine fully warmed up)
(2) Atmospheric temperature: 5°C (41°F) or more
(3) Condition of A/T
- Selector lever position: D range
- Overdrive switch: ON
(4) A/C switch: OFF
2. One trip monitor will be completed by driving according to the steps below (from start to switch off). It will take approx. 10 minutes.
*1: After warming up, turn off the ignition switch.
*2: Start the engine and accelerate to 56-64 km/h (35-40 mph).
*3: Close the throttle fully from 2000 3000 r/min with the clutch engaged
*4: Accelerate to 56-64 km/h (35-40 mph) and continue driving for 20 seconds. (After 1st monitor (deceleration), wait for 20 seconds or more until the next monitor (deceleration) starts). Then repeat steps *3 and *4 eight times.
*5: Decelerate and stop. Then turn off the ignition switch.
FUEL TRIM MONITOR DRIVE CYCLE
(DTC P0170)
1. All of the following requirements should be met when carrying out a drive test.
(1) Engine coolant temperature: 80°C-97°C (176-207°F) (Engine fully warmed up)
(2) Atmospheric temperature: -10°C (14°F) or more, 60°C (140°F) or less
(3) Condition of A/T:
- Selector lever position: D range
- Overdrive switch: ON
2. One trip monitor will be completed by driving according to the steps below (from start to switch off).
It will take 35 minutes.
*1: After warming up the engine, turn off the ignition switch.
*2: Start the engine and accelerate to 89-97 km/h (55-60 mph).
*3: Drive between 89 and 97 km/h (55 and 60 mph) for 30 minutes or more during monitor. Moreover, do not drive the vehicle at the constant speed range for 120 seconds or more. (Accelerate or decelerate lightly within the 120 seconds. Brake may be applied, but avoid decelerating or accelerating suddenly).
*4: Decelerate and stop the vehicle. Then turn off the ignition switch.
OTHER MONITORS
- Misfire (DTCs P0300, P0301, P0302, P0303, P0304)
- Evaporative emission control system (DTC P0440)
- Idle air control system (DTC P0505)
- Manifold differential pressure sensor (DTC P1400)
- Excessive time to enter closed loop fuel control (DTC P0125)
- Throttle position sensor (DTC P0120)
- Barometric pressure sensor (DTC P0105)
- Intake air temperature sensor (DTC P0110)
- Crankshaft position sensor (DTC P0335)
- Camshaft position sensor (DTC P0340)
- Volume air flow sensor (DTC P0100)
- Engine coolant temperature sensor (DTC P0115)
- Closed throttle position switch (DTC P0510)
- Generator FR terminal circuit (DTC P1500)
- Heated oxygen sensor circuit (DTCs P0130, P0136)
- Heated oxygen sensor heater circuit (DTCs P0135, P0141)
- EGR solenoid (DTC P0403)
- Evaporative emission purge solenoid (DTC P0443)
- Evaporative emission purge ventilation solenoid (DTC P0446)
- Injector circuit (DTCs P0201, P0202, P0203, P0204)
- Power steering pressure sensor circuit range/performance (DTC P0551)
- Serial communication link (DTC P1600)
TEST REQUIREMENTS, DRIVE CYCLE
1. All of the following requirements should be met when carrying out a drive test.
(1) Engine coolant temperature: 80°C (176°F) or more (Engine fully warmed up)
(2) Atmospheric temperature: 5°C (41°F) or more
(3) Condition of A/T:
- Selector lever position: D range
- Overdrive switch: ON
2. One trip monitor will be completed by driving according to the steps below (from start to switch off). It will take approx. 10 minutes.
*1: After warming up, turn off the ignition switch.
*2: Start the engine, accelerate to 56 - 64 km/h (35 - 40 mph), continue driving for 300 seconds or more at that speed range and stop. Moreover, brake or throttle may be applied for this period.
*3: After stopping the vehicle, continue idling for 300 seconds or more and then turn off the ignition switch. Moreover, the vehicle should be set to the following conditions for idling.
- A/C switch: OFF
- Lights, electric cooling fan and all accessories: OFF
- Transaxle: Neutral (A/T for P range)
- Steering wheel: Straight-forward position
NOTE: Drive according to the graph above.
READINESS TEST STATUS
The ECM records whether a good or bad judgment has been made about the main diagnostic items given below after the completion of a previous monitoring operation.
This record can be read using the scan tool. (When using the scan tool, the word "Complete" appears on the display if the judgment operation has been completed.) Furthermore, this record is reset if the battery terminals are disconnected or if the DTC is erased.
If a readiness test status has been reset, you will need to drive the vehicle once or twice according to the OBD-II Drive Cycle for the relevant diagnostic item in order to set the status back to "Complete".
- Catalyst: P0420, P0421
- Evaporative system: P0442, P0455
- Heated oxygen sensor: P0130, P0136
- Heated oxygen sensor heater: P0135, P0141
- EGR system; P0400