How to Set Readiness Codes
How to Set Readiness CodesCatalytic Converter
NOTE:
- Do not turn the ignition switch off.
- When the battery negative cable is disconnected, all readiness codes are cleared.
Required condition ('96-97 models):
- Ambient temperature between 32-92 degrees F (0-35 degrees C).
- Altitude below 2,400 m (7,874 ft.)
Required condition ('98-01 models):
- Ambient temperature between 20-95 degrees F (-7-35 degrees C).
1. Connect the scan tool to the vehicle's data link connector (DLC).
2. Start the engine. Hold it at 3,000 rpm with no load (in Park or Neutral) until the radiator fan/s come on.
3. Drive for about 10 minutes without stopping on a highway or freeway. Your speed can vary.
4. '96-97 models:
With the transmission in D4 position, drive at a steady speed between 33-37 mph (53-59 km/h) for 30 seconds.
'98-01 models:
With the transmission in D4 position, drive at a steady speed between 52-62 mph (80-100 km/h) for 30 seconds.
5. Do step 4 three times. Between each repetition, close the throttle completely for 1-2 seconds. If the engine is stopped during this part of the procedure, go to step 3 and do the procedure again.
6. Check for the readiness code with the scan tool.
EGR Monitor and Readiness Code
NOTE:
- Do not turn the ignition switch off during the procedure.
- When the battery negative cable is disconnected, all readiness codes are cleared.
Required condition ('96-97 models):
- Altitude below 2,400 m (7,874 ft.)
1. Connect the scan tool to the vehicle's data link connector (DLC).
2. Start the engine. Hold it at 3,000 rpm with no load (in Park or Neutral) until the radiator fan/s come on.
3. Drive at a steady speed with the A/T in D4 position, between 50 - 62 mph (80 - 100 km/h) for more than 10 seconds.
4. With the A/T in D4 position decelerate from 62 mph (100 km/h) by completely releasing the throttle for at least 5 seconds. If the engine is stopped during this procedure, go to step 3 and do the procedure again.
5. Check for the readiness code with the scan tool.
Evaporative Emissions (EVAP) Leak Monitor
NOTE:
- When the battery negative cable is disconnected, all readiness codes are cleared.
- If the engine is stopped while doing the procedure between steps 6 and 16, do this procedure from step 1 again.
1. Make sure the gasoline level is 60-90% of tank capacity (not full).
2. Turn the ignition switch OFF.
3. Let the vehicle sit more than 8 hours.
4. '96-97 models:
Make sure the ambient temperature is 32-92 degrees F (0-35 degrees C).
'98-01 models:
Make sure the ambient temperature is 20-95 degrees F (-7-35 degrees C).
5. Connect the scan tool to the Data Link Connector (DLC).
6. Start the engine and drive for about 15 minutes.
7. '96-97 models:
Keep the vehicle at a steady speed between 50-62 mph (80-100km/h), without moving the accelerator pedal, for about 1 minute.
'98-01 models:
Keep the vehicle at a steady speed between 50-70 mph (80-114km/h), without moving the accelerator pedal, for about 1 minute.
8. Stop the vehicle (do not stop the engine).
9. Repeat steps 7 and 8 two more times.
10. Check for the readiness code with the scan tool. If the readiness code does not set, go to step 11.
11. When ambient temperature is less than 32 degrees F (0 degrees C), hold the engine at 3,000 rpm with no load (in Park or Neutral) until the radiator fan comes on.
12. When ambient temperature is more than 86 degrees F (30 degrees C), remove the fuel fill cap, then install the fuel fill cap.
13. After step 12, drive for about 20 minutes on a freeway.
14. '96-97 models:
Keep the vehicle at a steady speed between 50-62 mph (80-100km/h), without moving the accelerator pedal, for about 1 minute.
'98-01 models:
Keep the vehicle at a steady speed between 50-70 mph (80-114km/h), without moving the accelerator pedal, for about 1 minute.
15. Stop the vehicle (do not stop the engine).
16. Repeat steps 14 and 15 two more times.
17. Check for readiness code with scan tool.
HO2S Monitor
Note:
- Do not turn the ignition switch OFF.
- When the battery negative cable is diconnected, all readiness codes are cleared.
Required condition ('96-97 models):
- Ambient temperature between 32-92 degrees F (0-35 degrees C).
- Altitude below 2,400 m (7,874 ft.)
Required condition ('98-01 models):
- Ambient temperature between 20-95 degrees F (-7-35 degrees C).
1. Connect the scan tool to the Data Link Connector (DLC).
2. Start the engine, and hold it at 3,000 rpm with no load (in Park or Neutral) until the radiator fan comes on.
3. Let the engine idle for 5 seconds.
4. Drive at a steady speed between 50-62 mph (80-100 km/h) for about 2 minutes.
5. With the A/T in D4 position, decelerate from 62 mph (100 km/h) by completely releasing the throttle for at least 5 seconds. If the engine is stopped during this procedure, go to step 4 and do the procedure again.
6. Check for readiness code with the scan tool.
HO2S Heater Monitor
Note:
- When the battery negative cable is diconnected, all readiness codes are cleared.
1. Connect the scan tool to the Data Link Connector (DLC).
2. Start the engine, and let the engine idle for 10 minutes.
3. Check for readiness code with the scan tool.