Acura RL. Manual - part 63

Fig. 206: Shift Solenoid Valve Driving Signal Combination Table

General Description

When shift solenoid valves A and D are turned ON, the hydraulic pressure circuit opens. When shift
solenoid valves B and C are turned OFF, the hydraulic pressure circuit opens. The hydraulic pressure circuit
supplies/discharges hydraulic pressure to/from each clutch according to the combination of the ON/OFF
status of those valves and the shift valves. The powertrain control module (PCM) commands the driver
circuit to turn on the shift solenoid valve. The circuit diagnoses malfunctions such as a circuit short or open,
and sends back a return signal during the PCM's command. A malfunction is detected when the return signal
does not match the PCM command to turn ON the shift solenoid valve, and a DTC is stored.

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

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The return signal does not match the command to turn ON shift solenoid valve A for at least 1 second.

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

P0974, P0982, P0983

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

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

Driving Pattern

Start the engine, shift to the R position, and wait for at least 1 second.



Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.

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 P0974 (7): ADVANCED DIAGNOSTICS

DTC P0974: OPEN IN SHIFT SOLENOID VALVE A CIRCUIT

Fig. 207: Shift Solenoid Valve A Circuit Diagram

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

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

Fig. 208: Shift Solenoid Valve Driving Signal Combination Table

General Description

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

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The return signal does not match the command to turn OFF shift solenoid valve A for at least 1 second.

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

P0973, P0982, P0983

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

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

Driving Pattern

Start the engine, shift to the P position, 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 P0976 (8): ADVANCED DIAGNOSTICS

DTC P0976: SHORT IN SHIFT SOLENOID VALVE B CIRCUIT

Fig. 209: Shift Solenoid Valve B Circuit Diagram

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

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

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