Honda Element. Manual — part 67

Driving Pattern

1. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator

fan comes on.

2. Let the engine idle for at least 92 seconds.

3. Turn off the ignition for at least 10 seconds.

Diagnosis Details

Conditions for illuminating the MIL

When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the ECM/PCM
memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and the
freeze frame data are stored.

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, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear
command or by disconnecting the battery.

DTC P1549 (34): ADVANCED DIAGNOSTICS

DTC P1549: CHARGING SYSTEM HIGH VOLTAGE

2007 Honda Element EX

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

Fig. 197: Charging System Circuit Diagram

General Description

The alternator is driven by the engine, and it generates electricity to supply the necessary power to the electrical
system and to charge the battery. The alternator voltage target values of 14.5 V and 12.5 V are achieved by
switching the alternator control mode (controlled by the engine control module (ECM)/powertrain control
module (PCM)). The alternator output signal is sent to the ECM/PCM, and it varies according to the battery's
state of charge, the electrical load, and the engine speed.

2007 Honda Element EX

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

When the IGP terminal voltage of the ECM/PCM is a set value or more for a set time, a malfunction is detected
and a DTC is stored.

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

MONITOR DESCRIPTION

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The IGP terminal voltage is 16.0 V or more for at least 60 seconds.

Diagnosis Details

Conditions for illuminating the indicator

When a malfunction is detected, the DTC and the freeze frame data are stored in the ECM/PCM memory. The
MIL does not come on.

Conditions for clearing the DTC

The DTC and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting
the battery.

DTC P1683 (40): ADVANCED DIAGNOSTICS

DTC P1683: THROTTLE VALVE DEFAULT POSITION SPRING PERFORMANCE PROBLEM

Execution

Continuous

Sequence

None

Duration

60 seconds or more

DTC Type

One drive cycle, MIL OFF

OBD Status

N/A

Condition

Minimum

Maximum

Engine speed

500 rpm

-

2007 Honda Element EX

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

Fig. 198: Throttle Valve Default Position - Graph

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 throttle valve default position spring is attached to the
throttle valve gear. It opens the throttle valve to improve starting performance in cold conditions, or to retain
minimum running performance in case of an electronic throttle control system failure.

If the throttle valve does not return to the default position when the throttle actuator control module moves the
throttle actuator to the default position from the fully closed position, 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 valve default position
spring, and a DTC is stored.

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

MONITOR DESCRIPTION

Enable Conditions

ENABLE CONDITIONS

Execution

Once per driving cycle

Sequence

None

Duration

2.5 seconds or more

DTC Type

One drive cycle, MIL ON

OBD Status

N/A

Condition

Minimum

Maximum

Battery voltage

6.0 V

-

Engine coolant temperature

158 °F (70 °C)

-

Ignition switch

OFF

2007 Honda Element EX

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element