Acura RL. Manual - part 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

  

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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.