Acura RL. Manual - part 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

  

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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

  

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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

  

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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.