Acura RL. Manual - part 61

Fig. 198: A/T Clutch Pressure Control Solenoid Valve B Current Graph

General Description

A/T clutch pressure control solenoid valve B is used for clutch pressure control. A spool in A/T clutch
pressure control solenoid valve B pushes a valve according to the duty cycle that is controlled by the
powertrain control module (PCM) so the hydraulic pressure is proportional to the current. The PCM
measures the current flowing through A/T clutch pressure control solenoid valve B and uses feedback
control to compensate for the difference between the actual current and the commanded one. If the measured
current for the PCM output duty cycle is not within a specified range (open or short), 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 measured current for the PCM's command value is as specified here for at least 1 second.

MALFUNCTION THRESHOLD

Execution

Continuous

Sequence

None

Duration

1 second or more

DTC Type

One drive cycle, MIL ON, D indicator blinks

OBD Status

PASSED/FAILED/NOT COMPLETED (STILL TESTING)

Condition

Minimum

Maximum

Battery voltage

11.0 V

No active DTCs

P0962, P0963, P0967, P0970, P0971

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

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

Driving Pattern

Start the engine, and wait for at least 1 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
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 P0967 (23): ADVANCED DIAGNOSTICS

DTC P0967: PROBLEM IN A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE B

Fig. 199: A/T Clutch Pressure Control Solenoid Valve B Circuit Diagram

Duty (%)

Current (A)

Failure mode

57 - 89

Less than 0.2

Low Input

More than 89

Less than 0.4

Low Input

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

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

Fig. 200: A/T Clutch Pressure Control Solenoid Valve B Current Graph

General Description

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

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The measured current for the PCM's command value is as specified here for at least 1 second.

MALFUNCTION THRESHOLD

Execution

Continuous

Sequence

None

Duration

1 second or more

DTC Type

One drive cycle, MIL ON, D indicator blinks

OBD Status

PASSED/FAILED/NOT COMPLETED (STILL TESTING)

Condition

Minimum

Maximum

Battery voltage

11.0 V

No active DTCs

P0962, P0963, P0966, P0970, P0971

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

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

Driving Pattern

Start the engine, and wait for at least 1 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
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 P0970 (29): ADVANCED DIAGNOSTICS

DTC P0970: PROBLEM IN A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C
CIRCUIT

Fig. 201: A/T Clutch Pressure Control Solenoid Valve C Circuit Diagram

Duty (%)

Current (A)

Failure mode

Less than 13

More than 0.6

High Input

13 - 27

More than 0.9

High Input

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

Friday, June 05, 2009 2:32:06 PM

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