Acura RL. Instruction — page 16

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

Long term fuel trim is lower than 0.84 (-16%).

Driving Pattern

1. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or 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.

When freeze frame data is stored, drive the vehicle under those conditions instead of Driving Pattern
2.

If the EVAP monitor runs instead of the HO2S monitor, turn the engine off, then restart it, and the
HO2S monitor will restart.

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.

Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

Diagnosis Details

Conditions for illuminating the MIL

Duration

Every 7 seconds

DTC Type

Two drive cycles, MIL ON

OBD Status

N/A

(1)

The malfunction judgment is cleared when it is judged as normal under the same driving
conditions in which the malfunction was detected.

Condition

Minimum

Maximum

Engine coolant temperature

156°F (69°C)

Intake air temperature

32°F (0°C)

Engine speed

580 rpm

4,000 rpm

MAP value

22 kPa (6.3 in.Hg, 160 mmHg)

Fuel feedback

Closed loop

Monitoring priority

P0420, P0430, P0456, P0457

No active DTCs

P0107, P0108, P0112, P0113, P0117, P0118, P0154, P0155,
P0157, P0158, P0300, P0301, P0302, P0303, P0304, P0305,
P0306, P0335, P0339, P0401, P0404, P0443, P0496, P0627,
P1077, P1078, P1109, P1128, P1129, P1174, P2197, P2227,
P2228, P2229, P2240, P2241, P2247, P2249, P2254, P2255,
P2272, P2273, P2413, P2630, P2631, P2646, P2647, P2648, P2649

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

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When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the PCM
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.

Conditions for clearing the MIL

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.

DTC P0222 (7): ADVANCED DIAGNOSTICS

DTC P0222: THROTTLE POSITION (TP) SENSOR B CIRCUIT LOW VOLTAGE

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

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© 2005 Mitchell Repair Information Company, LLC.

Fig. 45: Throttle Position (TP) Sensor B (Low Voltage) — Circuit Diagram

General Description

Throttle position (TP) sensor B is a semiconductor type, and it is attached to the throttle body and shaft to determine throttle
valve position.

The throttle valve position signal from TP sensor B is transmitted to the throttle actuator control module for
target position feedback control, then to the powertrain control module (PCM) as an actual throttle valve
position signal.

If the signal from TP sensor B is less than the fixed value for a set time, the throttle actuator control module

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

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© 2005 Mitchell Repair Information Company, LLC.

detects a malfunction and sends the malfunction data to the PCM. When the PCM receives the malfunction
data from the throttle actuator control module, the PCM detects a TP sensor B malfunction and stores a
DTC.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

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

Diagnosis Details

Conditions for illuminating the MIL

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

Conditions for clearing the MIL

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.

DTC P0223 (7): ADVANCED DIAGNOSTICS

DTC P0223: THROTTLE POSITION (TP) SENSOR B CIRCUIT HIGH VOLTAGE

Execution

Continuous

Sequence

None

Duration

0.2 seconds or more

DTC Type

One drive cycle, MIL ON

OBD Status

N/A

Condition

State of the engine

Running

No active DTCs

P0223, P2101, P2108, P2118, P2135, P2176, U0107

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

me

Friday, June 05, 2009 2:32:03 PM

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© 2005 Mitchell Repair Information Company, LLC.

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