Honda Element. Manual — part 75

Fig. 215: Throttle Position (TP) Sensor Circuit Diagram

General Description

The electronic throttle control system (ETCS) controls the throttle valve opening. The system is composed of
the throttle actuator, the throttle valve, throttle position (TP) sensors A and B, the throttle actuator control
module, the throttle actuator control module relay, the accelerator pedal position (APP) sensor, and the engine
control module (ECM)/powertrain control module (PCM).

2007 Honda Element EX

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

The APP sensor is operated via the throttle cable to determine the accelerator opening value when the driver
presses the accelerator pedal. The accelerator pedal opening value is converted to a signal in the APP sensor and
transmitted to the ECM/PCM to compute the target position. The target position signal is then transmitted to the
throttle actuator control module.

The throttle actuator control module determines the throttle valve target position according to the signal
received and operates the throttle actuator to move the throttle valve to the target position. The actual throttle
valve position is determined by TP sensor A installed in the throttle body.

When the output voltage to the throttle actuator exceeds the specification for a set time, the throttle actuator
control module detects a malfunction and transmits the malfunction data to the ECM/PCM. When the
ECM/PCM receives the malfunction data from the throttle actuator control module, the ECM/PCM detects a
malfunction of the throttle actuator system and stores a DTC.

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

MONITOR DESCRIPTION

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The current flow to the throttle actuator is 16 A or more for at least 0.2 second.

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
ECM/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.

Execution

Continuous

Sequence

None

Duration

0.2 second or more

DTC Type

One drive cycle, MIL ON

OBD Status

N/A

Condition

Minimum

Maximum

Battery voltage

6.0 V

-

Ignition switch

ON

No active DTCs

P2101, P2108, P2135, P2176, U0107

2007 Honda Element EX

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

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 P2122 (37): ADVANCED DIAGNOSTICS

DTC P2122: ACCELERATOR PEDAL POSITION (APP) SENSOR A (THROTTLE POSITION
SENSOR D) CIRCUIT LOW VOLTAGE

Fig. 216: Accelerator Pedal Position Sensor - 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 engine control
module (ECM)/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
ECM/PCM detects a malfunction and stores a DTC.

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

MONITOR DESCRIPTION

Enable Conditions

ENABLE CONDITIONS

Execution

Continuous

Sequence

None

Duration

0.2 seconds or more

DTC Type

One drive cycle, MIL ON

OBD Status

N/A

2007 Honda Element EX

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

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

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the
ECM/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. 217: Accelerator Pedal Position Sensor - Circuit Diagram

Condition

Ignition switch

ON

No active DTCs

P2123

2007 Honda Element EX

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element