Acura RL. Instruction — page 103

abnormal for more than 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

Either condition mentioned below must be met for at least 0.25 seconds.

No serial signals from the throttle actuator control module are detected.

The serial signals from the throttle actuator control module are abnormal.

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 U0114 (30): ADVANCED DIAGNOSTICS

DTC U0114: FCAN MALFUNCTION (SH-AWD CONTROL UNIT-PCM)

Execution

Continuous

Sequence

None

Duration

0.25 seconds or more

DTC Type

One drive cycle, MIL ON

OBD Status

N/A

Condition

Minimum

Maximum

Battery voltage

8.0 V

Elapsed time after starting throttle actuator control module

1 second

No active DTCs

P2101, P2108, P2118, P2135, P2176

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

me

Friday, June 05, 2009 2:32:09 PM

Page 409 © 2005 Mitchell Repair Information Company, LLC.

Fig. 320: FCAN Malfunction (SH-AWD Control Unit-PCM) — Circuit Diagram

General Description

The controller area network (CAN) transmits/receives pulsing signals to/from the control modules
simultaneously by using two signal lines (CANH and CANL).

When the powertrain control module (PCM) does not receive the signals via the CAN lines for more than 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

No signals via the CAN lines are received for at least 1 second.

Execution

Continuous

Sequence

None

Duration

1 second or more

DTC Type

One drive cycle, MIL OFF

OBD Status

N/A

Condition

Minimum

Maximum

Battery voltage

10.0 V

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

me

Friday, June 05, 2009 2:32:09 PM

Page 410 © 2005 Mitchell Repair Information Company, LLC.

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 U0122 (126): ADVANCED DIAGNOSTICS (V6 ENGINE A/T)

DTC U0122: F-CAN MALFUNCTION (VSA MODULATOR-CONTROL UNIT-PCM)

Fig. 321: F-CAN Malfunction (VSA Modulator-Control Unit-PCM) — Circuit Diagram

General Description

The controller area network (CAN) transmits/receives pulsing signals to/from the control modules
simultaneously by using two signal lines (CANH and CANL).

When the powertrain control module (PCM) does not receive the signals via the CAN lines for more than a
set time, the PCM detects a malfunction and a DTC is stored.

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

MONITOR DESCRIPTION CHART

Execution

Continuous

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

me

Friday, June 05, 2009 2:32:09 PM

Page 411 © 2005 Mitchell Repair Information Company, LLC.

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The PCM does not receive any signals for at least 1 second.

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 U0155 (126): ADVANCED DIAGNOSTICS (L4 ENGINE A/T)

DTC U0155: F-CAN MALFUNCTION (GAUGE CONTROL MODULE-PCM)

Fig. 322: F-CAN Malfunction (Gauge Control Module-PCM) — Circuit Diagram

General Description

Sequence

None

Duration

1 second or more

DTC Type

One drive cycle, MIL OFF

OBD Status

N/A

Condition

Minimum

Maximum

Battery voltage

10.0 V

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

me

Friday, June 05, 2009 2:32:09 PM

Page 412 © 2005 Mitchell Repair Information Company, LLC.

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