Honda Element. Manual - part 74

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. 

The throttle actuator control module compares the throttle valve target opening angle and the actual throttle 
valve opening angle from TP sensor A, and when the difference exceeds the specification, the throttle actuator 
control module 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 the malfunction of the 
throttle actuator system and a DTC is stored. 

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

MONITOR DESCRIPTION 

Enable Conditions 

ENABLE CONDITIONS 

Malfunction Threshold 

One of the conditions in this table must be met for at least 0.25 seconds* (0.5 seconds**). 

MALFUNCTION THRESHOLD CONDITIONS 

Execution

Continuous

Sequence

None

Duration

0.25 seconds or more

(1)

, 0.5 seconds or more

(2)

DTC Type

One drive cycle, MIL ON

OBD Status

N/A

(1)

Throttle valve closed direction

(2)

Throttle valve open direction

Condition

Minimum

Maximum

Battery voltage

6.0 V

-

Ignition switch

ON

No active DTCs

P2108, P2118, P2135, P2176, U0107

Throttle valve target 
position

Difference between the throttle valve target position and the actual 
throttle valve position

2 °

4 ° or more

 

2007 Honda Element EX 

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

  

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 P2108 (40): ADVANCED DIAGNOSTICS 

DTC P2108: THROTTLE ACTUATOR CONTROL MODULE PROBLEM 

Fig. 214: Communication Diagram Between Throttle Actuator Control Module And ECM/PCM 

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 

6 °

5.4 ° or more

10 °

5.7 ° or more

15 °

6 ° or more

90 °

6 ° or more

 

2007 Honda Element EX 

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

  

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. 

The CPU in the throttle actuator control module performs self-diagnosis for the ROM, the RAM, and the A/D 
converter. If internal data is found to be abnormal, a malfunction is detected and the malfunction data is 
transmitted to the ECM/PCM. 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 module and stores a DTC. 
When the ECM/PCM monitors the serial signal between the ECM/PCM and the throttle actuator control module 
and finds disagreement on these signals, 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 0.2 seconds. 



Data read from the ROM is abnormal.  



Data read from the RAM is abnormal.  



The A/D converter standard voltage is not a specified value.  



The serial signals between the ECM/PCM and the throttle actuator control module don't agree.  

Diagnosis Details 

Execution

Continuous

Sequence

None

Duration

0.2 seconds or more

DTC Type

One drive cycle, MIL ON

OBD Status

N/A

Condition

Minimum

Maximum

Battery voltage

8.0 V

-

Ignition switch

ON

No active DTCs

P2101, P2118, P2135, P2176, U0107

 

2007 Honda Element EX 

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

  

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 P2118 (40): ADVANCED DIAGNOSTICS 

DTC P2118: THROTTLE ACTUATOR CURRENT RANGE/PERFORMANCE PROBLEM 

 

2007 Honda Element EX 

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element