Acura RL. Instruction — page 43

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 3rd gear ratio, it is detected as a malfunction of the
hydraulic circuit or the 3rd clutch, and a DTC is stored.

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

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The actual gear ratio must match one of these conditions for at least 12 seconds with the 3rd gear command.

Actual gear ratio is greater than the 3rd gear ratio by a factor of 1.2.

Actual gear ratio is less than the 3rd 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 3rd gear.

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

Diagnosis Details

Conditions for illuminating the MIL

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
position

D

No active
DTCs

P0116, P0117, P0118, P0122, P0123, P0705, P0706, P0716, P0717, P0718, P0721,
P0722, P0723, P0731, P0732, 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

me

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

Page 169 © 2005 Mitchell Repair Information Company, LLC.

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 P0734 (64): ADVANCED DIAGNOSTICS

DTC P0734: PROBLEM IN 4TH CLUTCH AND 4TH CLUTCH HYDRAULIC CIRCUIT

Fig. 126: 4th Clutch And 4th Clutch Hydraulic Work Flow

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

me

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

Page 170 © 2005 Mitchell Repair Information Company, LLC.

Fig. 127: Gear Ratio VS Shift Status Graph

General Description

To engage 4th gear, line pressure is supplied to the 4th clutch piston, engaging the 4th clutch, and the input
shaft (mainshaft) and the input shaft (mainshaft) 4th gear are connected and revolve together. Hydraulic
pressure is supplied to the 4th clutch through the ATF strainer —> the ATF pump —> the regulator valve —>
the manual valve —> the shift valves —> the feed pipe —> 4th 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 4th gear ratio, it is detected as a malfunction of the hydraulic
circuit or the 4th 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

me

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

Page 171 © 2005 Mitchell Repair Information Company, LLC.

Malfunction Threshold

The actual gear ratio must match one of these conditions for at least 12 seconds with the 4th gear command.

Actual gear ratio is greater than the 4th gear ratio by a factor of 1.2.

Actual gear ratio is less than the 4th 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 4th gear.

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 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 P0735 (64): ADVANCED DIAGNOSTICS

DTC P0735: PROBLEM IN 5TH CLUTCH AND 5TH CLUTCH HYDRAULIC CIRCUIT

position

D

No active
DTCs

P0116, P0117, P0118, P0122, P0123, P0705, P0706, P0716, P0717, P0718, P0721,
P0722, P0723, P0731, P0732, P0733, 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

me

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

Page 172 © 2005 Mitchell Repair Information Company, LLC.

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