2001 Acura CL Need Free Help Please

BOSS188

MEMBER
2001 ACURA CL
6 CYL
FWD
AUTOMATIC
174,402 MILES

I have a 2001 Acura CL type S with the 3.2l V6 with 174402 miles and the only modifications I have made are Cold Air Intake, Remote Start no security with this one, and touch screen CD player. The problem I am having is I had there OBD code P0740 pop up when I noticed my check engine light come on along with the VSA (A traction control system) and I had the transmission rebuilt and got the same code 3 additional times right after having the transmission rebuilt it was rebuilt with the updated 2nd clutch and this solenoid keeps going out. Have you seen this problem before and if so whats wrong, and if not what are some steps that I can take to troubleshoot. I will Donate After I have a good answer.

1 Reply

KHLOW2008

MECHANIC
41,815 POSTS

Hi boss188,

Welcome to 2carpros. Here are the diagnostic procedures. Hope it is helpful.

DTC P0740/40: LOCK-UP CONTROL SYSTEM

NOTE:
DO NOT perform this DTC test until all other DTCs have been repaired first.

1. Using scan tool, retrieve A/T freeze data. Clear DTCs and road test vehicle under same conditions freeze data was recorded. If DTC returns, go to next step. If DTC does not return, problem is intermittent. Check transaxle and PCM connections.

2. Using scan tool, check for any other DTCs. If any other DTCs are present, repair those DTCs first and recheck for DTC P0740/40. If no other DTCs are present, go to next step.

3. Measure clutch pressure at each clutch pressure tap on transaxle. If all clutch pressures are within specification, go to next step. If any clutch pressure is not within specification, repair hydraulic system as necessary.

4. Replace lock-up control solenoid assembly and A/T clutch pressure control solenoid valve "C". Turn ignition off and clear codes. Ensure engine coolant temperature is greater than 176 °F (80 °C). Road test vehicle at 55 MPH for more than one minute. Recheck DTCs. If DTC P0740/40 returns, replace transaxle and torque converter. If DTC P0740/40 does not return, system is okay.