Acura RL. Manual - part 33

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

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The actual idle speed is at least 200 rpm greater 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.

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

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

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 P0562 (34): ADVANCED DIAGNOSTICS

DTC P0562: CHARGING SYSTEM LOW VOLTAGE

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

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

Fig. 94: Charging System (Low Voltage) - Circuit Diagram

General Description

The alternator is driven by the engine and 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 powertrain control module (PCM)).
The alternator output signal is sent to the PCM, and it varies according to the battery's state of charge, the
electrical load, and engine rpm.

When the IGP (power source) terminal voltage is a set value or less and this condition continues for a set
time, the PCM detects a malfunction and a DTC is stored.

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

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The IGP terminal voltage is 11.0 V or less 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 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 P0563 (34): ADVANCED DIAGNOSTICS

DTC P0563: POWERTRAIN CONTROL MODULE (PCM) POWER SOURCE CIRCUIT
UNEXPECTED VOLTAGE

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 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

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

Fig. 95: Powertrain Control Module Power Source - Circuit Diagram

General Description

If there is a short to ground in the harness between the powertrain control module (PCM) and the PGM-FI
main relay 1, the PGM-FI main relay 1 stays ON even though the ignition switch is OFF, and the PCM
remains active. However, the engine is not running because the power for the gauges, the ignition, and the
fuel pump is turned OFF by the ignition switch.

When the PCM operates for a set time after the ignition switch is turned OFF, a malfunction is detected and
a DTC is stored.

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

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The PCM operates for at least 5 seconds after the ignition switch is turned OFF.

Diagnosis Details

Conditions for illuminating the indicator

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

Execution

Continuous

Sequence

None

Duration

5 seconds or more

DTC Type

One drive cycle, MIL OFF

OBD Status

N/A

Condition

Minimum

Maximum

Battery voltage
(IGP terminal of PCM)

10.1 V

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

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

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