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Acura RL. Manual - part 53

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The engine speed flares during 2nd - 3rd and 3rd - 4th upshifts for at least 0.5 second.

Driving Pattern

Start the engine, and accelerate the vehicle until the transmission shifts into 5th gear in the D position.



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 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.

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

Execution

Continuous

Sequence

None

Duration

Depending on the driving pattern

DTC Type

Two drive cycles, MIL ON, D indicator blinks

OBD Status

PASSED/FAILED/NOT COMPLETED (STILL TESTING)

Condition

Minimum

Maximum

Battery voltage

11.0 V

Engine coolant temperature

50°F (10°C)

ATF temperature

-4°F (-20°C)

Vehicle speed

5 mph (8 km/h)

Accelerator pedal position
variation

6 %/20 milliseconds

Shift lever position

No active DTCs

P0122, P0123, P0705, P0716, P0717, P0718, P0721, P0722,
P0723, P0746, P0747, P0751, P0752, P0756, P0757, P0761,
P0762, P0766, P0767, P0776, P0796, P0797, P0842, P0843,
P0847, P0848, P0962, P0963, P0966, P0967, P0970, P0971,
P0973, P0974, P0976, P0977, P0979, P0980, P0982, P0983,
P1743, P1744, P1745, P1780

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

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

Clear command or by disconnecting the battery.

DTC P0796 (78): ADVANCED DIAGNOSTICS

DTC P0796: A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C STUCK OFF

Fig. 167: A/T Clutch Pressure Control Solenoid Valve C - Operation Diagram

Hydraulic pressure supply to the clutch by shift solenoid valve output (D position)

Fig. 168: Shift Solenoid Valve Output (D Position)

General Description

A/T clutch pressure control solenoid valve C is installed in the transmission housing. A/T clutch pressure
control solenoid A is operated by the powertrain control module (PCM) and converts the modulated

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

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

pressure to A/T clutch pressure control solenoid A pressure, which operates CPC valve A. Line pressure is
modulated to clutch pressure control A pressure (CPC A pressure) by CPC valve A and the CPC valve A
spring. A signal from the PCM is output to the proper gear clutch, determined by the gear schedule, to
supply the proper CPC pressure according to the driving conditions. When the current from the PCM is high
(ON), A/T clutch pressure control solenoid valve C operates and the CPC valve A pressure increases. When
the current from the PCM is low (OFF), A/T clutch pressure control solenoid valve C turns off and CPC
valve A pressure decreases. The PCM monitors the input shaft (mainshaft) speed and the output shaft
(countershaft) speed at the gear change determined by the shift schedule. When an improper gear ratio is
output compared to the predetermined gear ratio, an A/T clutch pressure control solenoid valve C OFF
failure is detected and a DTC is stored.

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

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

One of these symptom combinations occurs.



Symptom 1 occurs.



Symptom 2 occurs after symptom 1 occurs during the same drive cycle.



Drive in the R position after symptom 2 occurred. (Symptom 3)

MALFUNCTION THRESHOLD SYMPTOM 1

MALFUNCTION THRESHOLD SYMPTOM 2

Execution

Continuous

Sequence

None

Duration

3 seconds (symptom 1, 2, 3)

DTC Type

Two drive cycles, MIL ON, D indicator blinks

OBD Status

PASSED/FAILED/NOT COMPLETED (STILL TESTING)

Condition

Minimum

Maximum

Battery
voltage

11.0 V

Vehicle
speed

6 mph (9 km/h)

Shift lever
position

D, D3, R

No active
DTCs

P0122, P0123, P0716, P0717, P0718, P0721, P0722, P0723, P0746, P0747, P0751,
P0752, P0756, P0757, P0761, P0762, P0766, P0767, P0776, P0777, P0797, P0842,
P0843, P0847, P0848, P0962, P0963, P0966, P0967, P0970, P0971, P0973, P0974,
P0976, P0977, P0979, P0980, P0982, P0983, P1743, P1744, P1745, P1780

Symptom

Gear position commanded by the PCM

Actual gear position

1st gear in-gear

Neutral

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

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

Driving Pattern

Start the engine and put the vehicle in 1st gear. Then drive in the R position.



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

Diagnosis Details

Conditions for illuminating the MIL

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 P0797 (78): ADVANCED DIAGNOSTICS

DTC P0797: A/T CLUTCH PRESSURE CONTROL SOLENOID VALVE C STUCK ON

Symptom

Gear position commanded by the PCM

Actual gear position

Reverse gear in-gear

Neutral

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

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

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