Honda Element. Manual — part 8

an actual throttle valve position signal.

If the signal from TP sensor A is a fixed value or more for a set time, the throttle actuator control module
detects a malfunction and sends 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 TP sensor A malfunction
and stores a DTC.

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

MONITOR DESCRIPTION

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The TP sensor A output voltage is 4.8 V 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.

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 P0125 (86): ADVANCED DIAGNOSTICS

DTC P0125: ENGINE COOLANT TEMPERATURE (ECT) SENSOR 1 MALFUNCTION/SLOW
RESPONSE

Execution

Continuous

Sequence

None

Duration

0.2 second or more

DTC Type

One drive cycle, MIL ON

OBD Status

N/A

Condition

State of the engine

Running

No active DTCs

P0122, P2101, P2108, P2118, P2135, P2176, U0107

2007 Honda Element EX

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

Fig. 24: Engine Coolant Temperature (ECT) Sensor - Graph

General Description

The engine control module (ECM)/powertrain control module (PCM) supplies voltage to the engine coolant
temperature (ECT) signal circuit (about 5 V) through a pull-up resistor. As the engine coolant cools, the ECT
sensor 1 resistance increases, and the ECM/PCM detects a high signal voltage. As the engine coolant warms,
the ECT sensor 1 resistance decreases, and the ECM/PCM detects a low signal voltage.

If the ECT sensor 1 output voltage does not reach a specified temperature at which closed-loop control for
stoichiometric air/fuel ratio starts within a set time, depending on the initial coolant temperature after starting
the engine, 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

Execution

Once per driving cycle

Sequence

None

Duration

20 minutes or less

DTC Type

Two drive cycles, MIL ON

OBD Status

PASSED/FAILED/NOT COMPLETED (STILL TESTING)

Condition

Minimum

Maximum

Initial engine
coolant
temperature

-

0 °F (-18 °C)

Fuel feedback

Other than during fuel cut-off operation

No active DTCs

P0010, P0011, P0101, P0102, P0103, P0107, P0108, P0111, P0112, P0113, P0117,
P0118, P0134, P0135, P0171, P0172, P0300, P0301, P0302, P0303, P0304, P0335,
P0339, P0340, P0341, P0344, P0443, P0496, P0497, P0506, P0507, P1009, P1128,

2007 Honda Element EX

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

Malfunction Threshold

The engine running time before the engine coolant temperature reaches 98°F (36°C), based on the initial engine
coolant temperatures, is as follows.

INITIAL ENGINE COOLANT TEMPERATURES

Driving Pattern

1. Start the engine at an engine coolant temperature as specified under Enable Conditions.

2. Let the engine idle for at least 20 minutes.

Diagnosis Details

Conditions for illuminating the MIL

When a malfunction is detected during the first drive cycle with the ECT and IAT at engine start-up within the
specified temperature range, a Temporary DTC is stored in the ECM/PCM memory. If the malfunction recurs
during the next (second) drive cycle with the ECT and IAT at engine start-up within the specified temperature
range, 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 P0128 (87): ADVANCED DIAGNOSTICS

DTC P0128: COOLING SYSTEM MALFUNCTION

P1129, P1157, P1172, P145C, P2195, P2227, P2228, P2229, P2238, P2252, P2646,
P2647, P2648, P2649

Initial engine coolant temperature

-54 °F (-48 °C)

-35 °F (-37 °C)

0 °F (-18 °C)

Engine running time

300 seconds or more

60 seconds or more

2007 Honda Element EX

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

Fig. 25: Engine Coolant Temperature Of Engine Block (ECT 1) And Radiator (ECT 2)

General Description

The thermostat is closed when the engine coolant temperature is low, and it stops the circulation of engine
coolant to speed engine warm up. When the engine coolant temperature increases, the thermostat opens and
circulates engine coolant to control its temperature. When the engine coolant temperature decreases, the
opening area of the thermostat is reduced to regulate the engine coolant temperature. If the thermostat sticks
open, engine warm up is delayed, and exhaust emissions are adversely affected. The engine control module
(ECM)/powertrain control module (PCM) measures the rise in the coolant temperature after the engine starts at
the engine block and at the radiator, and it estimates the characteristics of the engine coolant temperature by
calculations based on those two temperatures and the driving conditions. When ECT 2 immediately increases
from the starting value, it is defined as the thermostat stuck open. When ECT 2 does not increase to the
specified value, it is defined as a thermostat malfunction.

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

MONITOR DESCRIPTION

Execution

Once per driving cycle

2007 Honda Element EX

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element