Acura RL. Instruction — page 80

Fig. 258: Accelerator Pedal Position Sensor A — Circuit Diagram

General Description

Accelerator pedal position (APP) sensor A is a part of the electronic throttle control system, and it is used to
convert the position of the accelerator pedal into electrical signals. Based on these signals, the powertrain
control module (PCM) controls the throttle actuator so that the throttle position agrees with the accelerator
pedal position. If the signal voltage from APP sensor A is a set value or less, the PCM detects a malfunction
and stores a DTC.

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

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The APP sensor A output voltage is 0.1 V or less for at least 0.2 seconds.

Diagnosis Details

Conditions for illuminating the MIL

Execution

Continuous

Sequence

None

Duration

0.2 seconds or more

DTC Type

One drive cycle, MIL ON

OBD Status

N/A

Condition

Ignition switch

ON

No active DTCs

P2123

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

me

Friday, June 05, 2009 2:32:07 PM

Page 317 © 2005 Mitchell Repair Information Company, LLC.

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 P2123 (37): ADVANCED DIAGNOSTICS

DTC P2123: ACCELERATOR PEDAL POSITION (APP) SENSOR A (THROTTLE POSITION
SENSOR D) CIRCUIT HIGH VOLTAGE

Fig. 259: Accelerator Pedal Position Sensor A — Circuit Diagram

General Description

Accelerator pedal position (APP) sensor A is a part of the electronic throttle control system, and it is used to
convert the position of the accelerator pedal into electrical signals. Based on these signals, the powertrain
control module (PCM) controls the throttle actuator so that the throttle position agrees with the accelerator
pedal position. If the signal voltage from APP sensor A is a set value or more, the PCM detects a
malfunction and stores a DTC.

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

MONITOR DESCRIPTION CHART

Execution

Continuous

Sequence

None

Duration

0.2 seconds or more

DTC Type

One drive cycle, MIL ON

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

me

Friday, June 05, 2009 2:32:07 PM

Page 318 © 2005 Mitchell Repair Information Company, LLC.

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The APP sensor A output voltage is 4.85 V or more 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 P2127 (37): ADVANCED DIAGNOSTICS

DTC P2127: ACCELERATOR PEDAL POSITION (APP) SENSOR B (THROTTLE POSITION
SENSOR E) CIRCUIT LOW VOLTAGE

OBD Status

N/A

Condition

Ignition switch

ON

No active DTCs

P2122

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

me

Friday, June 05, 2009 2:32:07 PM

Page 319 © 2005 Mitchell Repair Information Company, LLC.

Fig. 260: Accelerator Pedal Position Sensor B — Circuit Diagram

General Description

Accelerator pedal position (APP) sensor B is a part of the electronic throttle control system, and it is used to
convert the position of the accelerator pedal into electrical signals. Based on these signals, the powertrain
control module (PCM) controls the throttle actuator so that the throttle position agrees with the accelerator
pedal position. If the signal voltage from APP sensor B is a set value or less, the PCM detects a malfunction
and stores a DTC.

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

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The APP sensor B output voltage is 0.1 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 P2128 (37): ADVANCED DIAGNOSTICS

DTC P2128: ACCELERATOR PEDAL POSITION (APP) SENSOR B (THROTTLE POSITION
SENSOR E) 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

Ignition switch

ON

No active DTCs

P2128

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

me

Friday, June 05, 2009 2:32:07 PM

Page 320 © 2005 Mitchell Repair Information Company, LLC.

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