Acura RL. Instruction — page 32

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

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The return signal is «ON» for at least 5 seconds when the PCM outputs the «Low» signal to the EVAP
canister vent shut valve.

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
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 P0506 (14): ADVANCED DIAGNOSTICS

DTC P0506: IDLE CONTROL SYSTEM RPM LOWER THAN EXPECTED

Execution

Continuous

Sequence

None

Duration

5 seconds or more

DTC Type

One drive cycle, MIL ON

OBD Status

N/A

Condition

Minimum

Maximum

Battery voltage

10.1 V

State of the engine

Running

No active DTCs

P0498

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

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Page 125 © 2005 Mitchell Repair Information Company, LLC.

Fig. 90: Idle Control System Diagram — RPM Lower Than Expected

Fig. 91: Idle Control System Normal Operation And System Failure Graph

General Description

A target idle speed that meets the engine operating conditions (coolant temperature, A/C ON or OFF, etc.) is
stored in the powertrain control module (PCM). The PCM monitors and controls the idle speed so that the
actual idle speed is equal to the target idle speed. If the actual idle speed varies beyond a specified value
from the target speed over a certain period of time, the PCM detects a malfunction in the idle speed control
system and a DTC is stored.

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

MONITOR DESCRIPTION CHART

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

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Friday, June 05, 2009 2:32:04 PM

Page 126 © 2005 Mitchell Repair Information Company, LLC.

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The actual idle speed is at least 100 rpm less than the target idle speed for at least 20 seconds.

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 20 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 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

Execution

Once per driving cycle

Sequence

None

Duration

20 seconds or more

DTC Type

Two drive cycles, MIL ON

OBD Status

PASSED/FAILED/EXECUTING/OUT OF (TEST) CONDITION

Condition

Minimum

Maximum

Engine coolant temperature

156°F (69°C)

Intake air temperature

32°F (0°C)

Battery voltage

10.5 V

Fuel trim

0.73

1.47

Fuel feedback

Closed loop

Throttle position

Fully closed

No active DTCs

P0107, P0108, P0112, P0113, P0117, P0118, P0122, P0123,
P0171, P0172, P0174, P0175, P0222, P0223, P0300, P0301,
P0302, P0303, P0304, P0305, P0306, P0401, P0404, P0627,
P1109, P1128, P1129, P2101, P2108, P2118, P2122, P2123,
P2127, P2128, P2135, P2138, P2176, P2227, P2228, P2229,
P2413, P2646, P2647, P2648, P2649, U0107

Other

The engine is under no load

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

me

Friday, June 05, 2009 2:32:04 PM

Page 127 © 2005 Mitchell Repair Information Company, LLC.

Clear command or by disconnecting the battery.

DTC P0507 (14): ADVANCED DIAGNOSTICS

DTC P0507: IDLE CONTROL SYSTEM RPM HIGHER THAN EXPECTED

Fig. 92: Idle Control System Diagram — RPM Higher Than Expected

Fig. 93: Idle Control System Normal Operation And System Failure Graph

General Description

A target idle speed that meets the engine operating conditions (coolant temperature, A/C ON or OFF, etc.) is
stored in the powertrain control module (PCM). The PCM monitors and controls the idle speed so that the

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

me

Friday, June 05, 2009 2:32:04 PM

Page 128 © 2005 Mitchell Repair Information Company, LLC.

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