Acura RL. Manual - part 42

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 DTC and the freeze frame data
are stored. The MIL does not come on.

Conditions for clearing 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 P0732 (64): ADVANCED DIAGNOSTICS

DTC P0732: PROBLEM IN 2ND CLUTCH AND 2ND CLUTCH HYDRAULIC CIRCUIT

Fig. 122: 2nd Clutch And 2nd Clutch Hydraulic Diagnosis Work Flow

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

Friday, June 05, 2009 2:32:04 PM

Fig. 123: Gear Ratio VS Shift Status Graph

General Description

To engage 2nd gear, line pressure is supplied to the 2nd clutch piston, engaging the 2nd clutch, and the
secondary shaft and the secondary shaft 2nd gear are connected and revolve together. Hydraulic pressure is
supplied to the 2nd clutch through the ATF strainer --> the ATF pump --> the regulator valve --> the manual
valve --> the shift valves --> the feed pipe --> 2nd clutch piston. (A shift valve failure in the supply route
above is detected by the malfunction detection of each shift solenoid valve.) The powertrain control module
(PCM) computes the ratio of the input shaft (mainshaft) speed to the output shaft (countershaft) speed.
When the ratio is not the 2nd gear ratio, it is detected as a malfunction of the hydraulic circuit or the 2nd
clutch, and a DTC is stored.

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

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Execution

Continuous

Sequence

None

Duration

12 seconds or more

DTC Type

Two drive cycles, MIL OFF, D indicator blinks

OBD Status

PASSED/FAILED/NOT COMPLETED (STILL TESTING)

Condition

Minimum

Maximum

Battery
voltage

11.0 V

Engine
speed

1,000 rpm

Vehicle
speed

8 mph (12 km/h)

Shift lever

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

Friday, June 05, 2009 2:32:04 PM

Malfunction Threshold

The actual gear ratio must match one of these conditions for at least 12 seconds with the 2nd gear command.



Actual gear ratio is greater than the 2nd gear ratio by a factor of 1.2.



Actual gear ratio is less than the 2nd gear ratio by a factor of 0.75.

Driving Pattern

Start the engine, shift to the D position, and drive the vehicle at a speed of 8 mph (12 km/h) or more for at
least 12 seconds in 2nd gear.



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 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 P0733 (64): ADVANCED DIAGNOSTICS

DTC P0733: PROBLEM IN 3RD CLUTCH AND 3RD CLUTCH HYDRAULIC CIRCUIT

position

No active
DTCs

P0116, P0117, P0118, P0122, P0123, P0705, P0706, P0716, P0717, P0718, P0721,
P0722, P0723, P0731, P0733, P0734, P0735, P0746, P0747, P0751, P0752, P0756,
P0757, P0761, P0762, P0776, P0777, P0796, P0797, 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 2:32:04 PM

Fig. 124: 3rd Clutch And 3rd Clutch Hydraulic Work Flow

Fig. 125: Gear Ratio VS Shift Status Graph

General Description

To engage 3rd gear, line pressure is supplied to the 3rd clutch piston, the 3rd clutch is engaged, and the
output shaft (countershaft) and the output shaft (countershaft) 3rd gear are connected and revolve together.
Hydraulic pressure is supplied to the 3rd clutch through the ATF strainer --> the ATF pump --> the
regulator valve --> the manual valve --> the shift valves --> the feed pipe --> 3rd clutch piston. (The shift

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics - RL

Friday, June 05, 2009 2:32:04 PM

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