Honda Element. Manual — part 78

General Description

Accelerator pedal position (APP) sensor A and accelerator pedal position (APP) sensor B are potentiometers,
and they are installed in the engine compartment.

The APP sensors A and B are 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 APP
sensors A and B and transmitted to the engine control module (ECM)/powertrain control module (PCM) to
compute the target position. The target position signal is then transmitted to the throttle actuator control module.

APP sensor A is for the primary control, and APP sensor B is a back-up of APP sensor A in case it
malfunctions. Both sensors compare their output voltage to each other for malfunction detection.

When the voltage difference of APP sensor B is out of a fixed range for a set period of time, the ECM/PCM
detects a malfunction, and a DTC is stored.

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

MONITOR DESCRIPTION

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

One of these conditions must be met for at least 0.3 seconds.



If the APP sensor B voltage exceeds the range from 0 V or less to 0.361 V or more when the APP sensor
A voltage is 0.361 V.



If the APP sensor B voltage exceeds the range from 2.319 V or less to 2.681 V or more when the APP
sensor A voltage is 4.995 V.

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

Execution

Continuous

Sequence

None

Duration

0.3 seconds or more

DTC Type

One drive cycle, MIL ON

OBD Status

N/A

Condition

Ignition switch

ON

No active DTCs

P2122, P2123, P2127, P2128

2007 Honda Element EX

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

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 P2176 (40): ADVANCED DIAGNOSTICS

DTC P2176: THROTTLE ACTUATOR CONTROL SYSTEM IDLE POSITION NOT LEARNED

Fig. 224: Identifying Throttle Actuator Positions

General Description

The electronic throttle control system 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). 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.

2007 Honda Element EX

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

The throttle actuator control module transmits a signal to the throttle actuator and moves the throttle valve to the
fully closed position to register the throttle valve fully closed position after the ignition switch is turned ON.

The throttle actuator control module detects the malfunction of the throttle actuator control system, and it
transmits a malfunction signal to the ECM/PCM when the registration of the throttle valve fully closed position
is not completed within a predetermined time or the registered value is out of predetermined range after the
ignition switch is turned ON. When the ECM/PCM receives the malfunction data from the throttle actuator
control module, the ECM/PCM detects a malfunction in the throttle actuator control system and stores a DTC.

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

MONITOR DESCRIPTION

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

Either condition must be met for at least 0.7 seconds.



The registration of the throttle valve fully closed position is not completed within a predetermined time
after the ignition switch is turned ON.



The registered value of the throttle valve fully closed position is 0.74 V

*1

, 1.61 V

*2

, or more, or 0.49

V

*1

, 1.37 V

*2

, or less.

*1

: TP sensor A

*2

: TP sensor B

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

Execution

Once per driving cycle

Sequence

None

Duration

0.7 seconds 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

P0122, P0123, P0222, P0223, P2101, P2108, P2118, P2135, U0107

Other

Engine is stopped and ignition switch is not in the ON position

2007 Honda Element EX

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

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 P2183 (192): ADVANCED DIAGNOSTICS

DTC P2183: ENGINE COOLANT TEMPERATURE (ECT) SENSOR 2 RANGE/PERFORMANCE
PROBLEM

Fig. 225: Intake Air Temperature (IAT) Sensor Circuit Range/Performance - Graph

General Description

Two engine coolant temperature sensors and one intake air temperature sensor are used by the engine control
module (ECM)/powertrain control module (PCM).

When the engine is stopped and enough time has passed, the temperature of the engine will equal the ambient

2007 Honda Element EX

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element