Contents Wiring diagrams Section: Advanced Diagnostics All sections

Driving Pattern Honda S2000 AP2 facelift

Advanced Diagnostics 34 illustrations ~5341 words

Driving Pattern

  1. Turn the ignition off, and wait at least 6 hours.
  2. Start the engine, and let it idle for at least 10 seconds.

When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the ECM memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and the freeze frame data are stored.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Intake Air Temperature (IAT) Sensor Circuit - Wiring Diagram. Scheme 167

Scheme 167: Intake Air Temperature (IAT) Sensor Circuit - Wiring Diagram

Intake Air Temperature (IAT) Sensor Output Voltage - Graph. Scheme 168

Scheme 168: Intake Air Temperature (IAT) Sensor Output Voltage - Graph

The IAT sensor output voltage is 0.08 V or less for at least 2 seconds.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

The IAT sensor output voltage is 4.92 V or more for at least 2 seconds.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Engine Coolant Temperature (ECT) Sensor 1 Circuit Range/ Performance Problem - Graph. Scheme 169

Scheme 169: Engine Coolant Temperature (ECT) Sensor 1 Circuit Range/ Performance Problem - Graph

Malfunction determination 1

With a completely cooled engine (one that has been off for at least 6 hours)

When the change in coolant temperature after 10 minutes or more of running time is 50°F (10°C) or less, a malfunction is detected.

Malfunction determination 2: With a partially cooled engine (one that has been off for less than 6 hours)

When the difference between the coolant temperature after 10 minutes or more of running time minus the coolant temperature

after the engine has been off for 180 minutes and then run for 10 seconds is 50°F (10°C) or less, a malfunction is detected.

  1. With a completely cooled engine (one that has been off for at least 6 hours).
  1. Start the engine, and let it idle for at least 10 minutes.
  2. Turn off the ignition for 10 seconds, then restart the engine and let it idle for at least 10 seconds.
  1. With a partially cooled engine (one that has been off for less than 6 hours).
  1. Start the engine, and let it idle for at least 10 minutes.
  2. Turn off the ignition for 180 minutes, then restart the engine and let it idle for at least 10 seconds.

When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the ECM memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and the freeze frame data are stored.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Engine Coolant Temperature (ECT) Sensor 1 Circuit - Wiring Diagram. Scheme 170

Scheme 170: Engine Coolant Temperature (ECT) Sensor 1 Circuit - Wiring Diagram

Engine Coolant Temperature (ECT) Sensor 1 Output Voltage - Graph. Scheme 171

Scheme 171: Engine Coolant Temperature (ECT) Sensor 1 Output Voltage - Graph

The ECT sensor 1 output voltage is 0.08 V or less for at least 2 seconds.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

The ECT sensor 1 output voltage is 4.92 V or more for at least 2 seconds.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Throttle Position (TP) Sensor A Circuit - Wiring Diagram. Scheme 172

Scheme 172: Throttle Position (TP) Sensor A Circuit - Wiring Diagram

The TP sensor A output voltage is 0.3 V or less for at least 0.2 second.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

The TP sensor A output voltage is 4.8 V or more for at least 0.2 second.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Engine Coolant Temperature (ECT) Sensor 1 Malfunction/Slow Response - Graph. Scheme 173

Scheme 173: Engine Coolant Temperature (ECT) Sensor 1 Malfunction/Slow Response - Graph

The engine running time before the engine coolant temperature reaches 98°F (36°C), based on the initial engine coolant temperatures, is as follows.

Initial engine coolant temperature54°F (-48°C)35°F (-37°C)0°F (-18°C)
Engine running time300 seconds or more60 seconds or more

TEMPERATURE CHART

  1. Start the engine at an engine coolant temperature as specified under Enable Conditions.
  2. Let the engine idle for at least 20 minutes.

When a malfunction is detected during the first drive cycle with the ECT and IAT at engine start-up within the specified temperature range, a Temporary DTC is stored in the ECM memory. If the malfunction recurs during the next (second) drive cycle with the ECT and IAT at engine start-up within the specified temperature range, the MIL comes on and the DTC and the freeze frame data are stored.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Cooling System Malfunction - Graph. Scheme 174

Scheme 174: Cooling System Malfunction - Graph

Malfunction determination 1

If the difference between the current measured coolant temperature at the radiator (ECT 2) and the initial coolant temperature at the radiator (ECT 2) is at least 46°F (8°C) when the estimated coolant temperature at the engine (ECT 1) reaches 164°F (74°C), a malfunction is detected (thermostat stuck open); or if the coolant temperature at the radiator (ECT 2) only reaches 72°F (22°C), a malfunction is detected (thermostat malfunction).

Malfunction determination 2

When the estimated engine coolant temperature (ECT 1) reaches 159°F (71°C) before the measured engine coolant temperature (ECT 1) reaches 159°F (71°C), a malfunction is detected.

  1. Start the engine under the conditions specified under Enable Conditions.
  2. Drive the vehicle at a speed between 15 - 75 mph (24 - 120 km/h) for at least 10 minutes.
  1. Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

When a malfunction is detected during the first drive cycle with the ECT and IAT at engine start-up within the specified temperature range, a Temporary DTC is stored in the ECM memory. If the malfunction recurs during the next (second) drive cycle with the ECT and IAT at engine start-up within the specified temperature range, the MIL comes on and the DTC and the freeze frame data are stored.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Air/Fuel Ratio (A/F) Sensor (Sensor 1) Slow Response - Graph. Scheme 175

Scheme 175: Air/Fuel Ratio (A/F) Sensor (Sensor 1) Slow Response - Graph

The average of the A/F sensor inversion cycle 27 periods or less is at least 8 seconds.

Driving Pattern - Graph. Scheme 176

Scheme 176: Driving Pattern - Graph
  1. Start the engine. Hold the engine speed at 3,000 rpm without load (in neutral) until the radiator fan comes on.
  2. Drive the vehicle at a steady speed up to 25 mph (40 km/h), for at least 5 minutes.
  3. Then, drive immediately at a steady speed between 26 - 81 mph (41 - 130 km/h) for at least 8 seconds.
  1. If the EVAP monitor runs instead of the HO2S monitor, turn the engine off, then restart it, and the HO2S monitor will restart.
  2. Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the ECM memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and the freeze frame data are stored.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Air/Fuel Ratio (A/F) Sensor (Sensor 1) Heater System Malfunction. Scheme 177

Scheme 177: Air/Fuel Ratio (A/F) Sensor (Sensor 1) Heater System Malfunction

Malfunction determination 1

The A/F sensor internal resistance value is 50 ohms or more for at least 40 seconds right after the engine starts.

Malfunction determination 2

  1. The A/F sensor internal resistance value is 50 ohms or more for at least 15 seconds.
  2. The A/F sensor internal resistance value is 80 ohms or more for at least 1 second.

Start the engine, then let it idle for at least 2 minutes.

When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the ECM memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and the freeze frame data are stored.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Air/Fuel Ratio (A/F) Sensor (Sensor 1) Heater Malfunction - Circuit Diagram. Scheme 178

Scheme 178: Air/Fuel Ratio (A/F) Sensor (Sensor 1) Heater Malfunction - Circuit Diagram

One of these conditions must be met.

  1. The heater current is 0.8 A or less for at least 4 seconds while the heater is activated, and the heater current is 0.8 A or more for at least 4 seconds while the heater is not activated.
  2. The heater current is 15.2 A or more for at least 0.6 seconds.

Start the engine. Hold the engine speed at 3,000 rpm without load (in neutral) until the radiator fan comes on, then let it idle.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) - Circuit Diagram. Scheme 179

Scheme 179: Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) - Circuit Diagram

Secondary Heated Oxygen Sensor Output Voltage - Graph. Scheme 180

Scheme 180: Secondary Heated Oxygen Sensor Output Voltage - Graph

The secondary HO2S output voltage is 0.293 V or less for at least 30 seconds.

  1. Start the engine. Let it idle until the radiator fan comes on.
  2. Then, drive immediately at a steady engine speed between 1,500 - 3,000 rpm for at least 1 minute.
  1. Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Secondary Heated Oxygen Sensor Output Voltage - Graph. Scheme 181

Scheme 181: Secondary Heated Oxygen Sensor Output Voltage - Graph

The secondary HO2S output voltage is 1.270 V or more for at least 5 seconds.

  1. Start the engine. Let it idle until the radiator fan comes on.
  2. Then, drive immediately at a steady engine speed between 1,500 - 3,000 rpm for at least 1 minute.
  1. Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Secondary Heated Oxygen Sensor Output Voltage - Graph. Scheme 182

Scheme 182: Secondary Heated Oxygen Sensor Output Voltage - Graph
  1. When the secondary HO2S output drops to the response deterioration judgment threshold value and the response characteristics measurement is finished. MALFUNCTION THRESHOLD CHART MIN 0.57 second MAX 1 second
  2. The voltage does not drop to the response deterioration judgment threshold value after a predetermined time (1 second) has elapsed.
  1. Start the engine. Let it idle until the radiator fan comes on.
  2. Then, drive immediately at a steady speed of 35 mph (57 km/h) or more for at least 14.1 seconds.
  1. Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the ECM memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and the freeze frame data are stored.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Heater Circuit Wiring Diagram. Scheme 183

Scheme 183: Secondary Heated Oxygen Sensor (Secondary HO2S (Sensor 2)) Heater Circuit Wiring Diagram

The current is 0.38 A or less, or 3.33 A or more, for at least 5 seconds when the heater is on.

Start the engine. Let it idle until the radiator fan comes on.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Fuel System - Graph. Scheme 184

Scheme 184: Fuel System - Graph

Long term fuel trim is higher than 1.25 (+25 %).

  1. Start the engine. Hold the engine speed at 3,000 rpm without load (in neutral) until the radiator fan comes on.
  2. Then, drive at a steady speed between 15 - 75 mph (24 - 120 km/h) for at least 15 minutes, and watch the long term fuel trim. If the long term fuel trim stays at about 1.0, the vehicle is OK or it is a very minor problem. If a significant fault is still present, the long term fuel trim will move up or down while driving.
  1. When freeze frame data is stored, drive the vehicle under those conditions instead of Driving Pattern 2.
  2. If the EVAP monitor runs instead of the HO2S monitor, turn the engine off, then restart it, and the HO2S monitor will restart.
  3. After clearing the DTC by disconnecting the battery or using the scan tool, extend Driving Pattern 2 to 40 minutes or longer to allow time for long term fuel trim to recover.
  4. Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the ECM memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and the freeze frame data are stored.

The MIL will be cleared if the malfunction does not recur during three consecutive drive cycles in which the engine conditions are similar to the first time the malfunction was detected.

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Fuel System - Graph. Scheme 185

Scheme 185: Fuel System - Graph

Long term fuel trim is lower than 0.80 (-20 %).

  1. Start the engine. Hold the engine speed at 3,000 rpm without load (in neutral) until the radiator fan comes on.
  2. Then, drive at a steady speed between 15 - 75 mph (24 - 120 km/h) for at least 15 minutes, and watch the long term fuel trim. If the long term fuel trim stays at about 1.0, the vehicle is OK or it is a very minor problem. If a significant fault is still present, the long term fuel trim will move up or down while driving.
  1. When freeze frame data is stored, drive the vehicle under those conditions instead of Driving Pattern 2.
  2. If the EVAP monitor runs instead of the HO2S monitor, turn the engine off, then restart it, and the HO2S monitor will restart.
  3. After clearing the DTC by disconnecting the battery or using the scan tool, extend Driving Pattern 2 to 40 minutes or longer to allow time for long term fuel trim to recover.
  4. Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the ECM memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and the freeze frame data are stored.

The MIL will be cleared if the malfunction does not recur during three consecutive drive cycles in which the engine conditions are similar to the first time the malfunction was detected.

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

The TP sensor B output voltage is 0.3 V or less for at least 0.2 second.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

The TP sensor B output voltage is 4.8 V or more for at least 0.2 second.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Crankshaft Position Sensor Pulse Data - Graph. Scheme 186

Scheme 186: Crankshaft Position Sensor Pulse Data - Graph

The number of misfires versus engine revolutions is equal to or greater than the values in the table.

Misfire TypeThe number of engine revolutionsThe number of misfires
Misfire Type 1 (Severe)Per 200 revolutions19 - 89 times (1)
Misfire Type 2 (Light)Per 1,000 revolutions39 times
(1) Depending on engine speed and load.
(1)Depending on engine speed and load.

MALFUNCTION THRESHOLD

Driving Pattern - Graph. Scheme 187

Scheme 187: Driving Pattern - Graph
  1. Start the engine. Hold the engine speed at 3,000 rpm without load (in neutral) until the radiator fan comes on.
  2. Drive the vehicle at a speed between 15 - 75 mph (24 - 120 km/h) for at least 3 minutes.
  3. Stop the vehicle, and let the engine idle for at least 3 minutes.
  1. When freeze frame data is stored, drive the vehicle under those conditions instead of Driving Patterns 2 or 3.
  2. When you have difficulty duplicating the DTC because of road conditions and traffic situations, repeat the driving pattern several times.
  3. Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

Misfire Type 1: Under high rpm or high load conditions: The MIL blinks once per second if a type 1 misfire (catalyst damaging) occurs, and a Temporary DTC is stored. If the type 1 misfire ceases, the MIL goes off. If a type 1 misfire occurs during the next (second) drive cycle, the MIL blinks at the first misfire occurrence, and the DTC and the freeze frame data are stored. The MIL remains on steady if the type 1 misfire ceases.

Under normal driving conditions: The MIL blinks once per second if a type 1 misfire occurs a third time, and a Temporary DTC is stored. If a type 1 misfire occurs during the next (second) drive cycle, the MIL blinks during the third type 1 misfire occurrence, and the DTC and the freeze frame data are stored. If the type 1 misfire ceases, the MIL remains on steady.

Misfire Type 2: When a type 2 misfire (emission-related but not severe enough to immediately damage the TWC) occurs within the first 1,000 engine revolutions after engine start-up, a Temporary DTC is stored.

If a type 2 misfire occurs after the first 1,000 engine revolutions after engine start-up, a Temporary DTC is stored during the fourth type 2 misfire occurrence.

If a type 2 misfire occurs during the next (second) drive cycle, the MIL comes on, and the DTC and the freeze frame data are stored.

The MIL will be cleared if the malfunction does not recur during three consecutive drive cycles in which the engine conditions are similar to the first time the malfunction was detected.

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

The number of misfires versus engine revolutions is equal to or greater than the values in the table.

Misfire TypeThe number of engine revolutionsThe number of misfires
Misfire Type 1 (Severe)Per 200 revolutions19 - 89 times (1)
Misfire Type 2 (Light)Per 1,000 revolutions39 times
(1) Depending on engine speed and load.
(1)Depending on engine speed and load.

MALFUNCTION THRESHOLD CHART

  1. Start the engine. Hold the engine speed at 3,000 rpm without load (in neutral) until the radiator fan comes on.
  2. Drive the vehicle at a speed between 15 - 75 mph (24 - 120 km/h) for at least 3 minutes.
  3. Stop the vehicle, and let the engine idle for at least 3 minutes.
  1. When freeze frame data is stored, drive the vehicle under those conditions instead of Driving Patterns 2 or 3.
  2. When you have difficulty duplicating the DTC because of road conditions and traffic situations, repeat the driving pattern several times.
  3. Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

Misfire Type 1: Under high rpm or high load conditions: The MIL blinks once per second if a type 1 misfire (catalyst damaging) occurs, and a Temporary DTC is stored. If the type 1 misfire ceases, the MIL goes off. If a type 1 misfire occurs during the next (second) drive cycle, the MIL blinks at the first misfire occurrence, and the DTC and the freeze frame data are stored. The MIL remains on steady if the type 1 misfire ceases.

Under normal driving conditions: The MIL blinks once per second if a type 1 misfire occurs a third time, and a Temporary DTC is stored. If a type 1 misfire occurs during the next (second) drive cycle, the MIL blinks during the third type 1 misfire occurrence, and the DTC and the freeze frame data are stored. If the type 1 misfire ceases, the MIL remains on steady.

Misfire Type 2: When a type 2 misfire (emission-related but not severe enough to immediately damage the TWC) occurs within the first 1,000 engine revolutions after engine start-up, a Temporary DTC is stored.

If a type 2 misfire occurs after the first 1,000 engine revolutions after engine start-up, a Temporary DTC is stored during the fourth type 2 misfire occurrence.

If a type 2 misfire occurs during the next (second) drive cycle, the MIL comes on, and the DTC and the freeze frame data are stored.

The MIL will be cleared if the malfunction does not recur during three consecutive drive cycles in which the engine conditions are similar to the first time the malfunction was detected.

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Knock Sensor Malfunction - Circuit Diagram. Scheme 188

Scheme 188: Knock Sensor Malfunction - Circuit Diagram

No signals from the knock sensor are detected for at least 5 seconds.

  1. Start the engine. Hold the engine speed at 3,000 rpm without load (in neutral) until the radiator fan comes on.
  2. Hold the engine speed at 3,000 - 4,000 rpm for at least 10 seconds.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Crankshaft Position (CKP) Sensor No Signal - Circuit Diagram. Scheme 189

Scheme 189: Crankshaft Position (CKP) Sensor No Signal - Circuit Diagram

No signals from the CKP sensor are input at least 50 times.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Abnormal signals from the CKP sensor are input at least 30 times.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Camshaft Position (CMP) Sensor No Signal - Circuit Diagram. Scheme 190

Scheme 190: Camshaft Position (CMP) Sensor No Signal - Circuit Diagram

No CMP sensor pulsing signals are detected at least 50 times.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Abnormal CMP sensor pulsing signals are detected at least 30 times.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Catalyst System Efficiency Voltage And Time - Graph. Scheme 191

Scheme 191: Catalyst System Efficiency Voltage And Time - Graph

The number of detections is 272 (CTAGLT67) or more.

Driving Pattern - Graph. Scheme 192

Scheme 192: Driving Pattern - Graph
  1. Start the engine. Hold the engine speed at 3,000 rpm without load (in neutral) until the radiator fan comes on.
  2. Drive the vehicle at a speed between 45 - 75 mph (73 - 120 km/h) for at least 5 minutes, to warm up the TWC.
  3. Set a vehicle speed of 55 mph (88 km/h) on the cruise control, and drive for at least 1 minute.
  1. Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the ECM memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and the freeze frame data are stored.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Evaporative Emission (EVAP) Canister Purge Valve Malfunction - Circuit Diagram. Scheme 193

Scheme 193: Evaporative Emission (EVAP) Canister Purge Valve Malfunction - Circuit Diagram

The return signal does not change according to the EVAP canister purge valve output for at least 5 seconds.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Fuel Tank Pressure (FTP) Sensor Range/Performance Problem - Circuit Diagram. Scheme 194

Scheme 194: Fuel Tank Pressure (FTP) Sensor Range/Performance Problem - Circuit Diagram

Fuel Tank Pressure (FTP) Sensor Voltage - Graph. Scheme 195

Scheme 195: Fuel Tank Pressure (FTP) Sensor Voltage - Graph

Fuel Tank Pressure - Graph. Scheme 196

Scheme 196: Fuel Tank Pressure - Graph

The FTP sensor output fluctuates by 0.3 kPa (0.1 in.Hg, 2 mmHg) or more at least five times within 3 seconds.

Start the engine in a cold condition, and let it idle for at least 20 seconds.

When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the ECM memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and the freeze frame data are stored.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Fuel Tank Pressure Operation - Graph. Scheme 197

Scheme 197: Fuel Tank Pressure Operation - Graph

The output from the fuel tank pressure sensor is less than -7 kPa (-2.1 in.Hg, -55 mmHg) for at least 3 seconds.

Start the engine in a cold condition, and let it idle until the radiator fan comes on.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Fuel Tank Pressure Operation - Graph. Scheme 198

Scheme 198: Fuel Tank Pressure Operation - Graph

The output from the fuel tank pressure sensor is more than 8 kPa (2.2 in.Hg, 55 mmHg) for at least 3 seconds.

Start the engine in a cold condition, and let it idle until the radiator fan comes on.

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the ECM memory.

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.

Evaporative Emission (EVAP) System Large Leak Detected - Diagram. Scheme 199

Scheme 199: Evaporative Emission (EVAP) System Large Leak Detected - Diagram

Evaporative Emission (EVAP) System - Diagnosis Execution. Scheme 200

Scheme 200: Evaporative Emission (EVAP) System - Diagnosis Execution

The variation of pressure inside the fuel tank is -2 kPa (-0.5 in.Hg, -11 mmHg) or more.