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Acura RSX Honda Integra. Manual - part 243

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YES

14-97

PCM CONNECTOR A (31P)

VCC1 (YEL/RED)

LG1 (BRN/YEL)

NC (BLU)

A (31P)

C (22P)

PCM CONNECTORS

21. Turn the ignition switch OFF.

22. Disconnect PCM connector A (31P).

23. Check for continuity between PCM connector

terminal A21 and body ground.

Repair short to ground in the wire between

PCM connector terminal A21 and the output shaft
(countershaft) speed sensor connector.

NOTE: A short to ground on this circuit damages
the PCM.

Update the PCM if it does not have the latest

software, or substitute a known-good PCM
(see page 14-7), then recheck. If the symptom/
indication goes away with a known-good PCM,
replace the original PCM.

24. Measure the voltage between PCM connector

terminals C15 and A24.

Repair open in the wire between PCM

connector terminal C15 and the output shaft
(countershaft) speed sensor connector.

Update the PCM if it does not have the latest

software, or substitute a known-good PCM
(see page 14-7), then recheck. If the symptom/
indication goes away with a known-good PCM,
replace the original PCM.

Wire side of female terminals

Is ther e continuity?

Is ther e about 5 V ?

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DTC P0730:

2002-2004 Models

YES

14-98

Automatic Transmission

DTC Troubleshooting (cont’d)

Problem in Shift Control System

NOTE:

• Record all freeze data and review General

Troubleshooting Information (see page 14-3) before
you troubleshoot.

• Keep replacement solenoid valves on hand;

– A/T clutch pressure control solenoid valves B and C
– Shift solenoid valves A, B, C, D, and E

1. Check whether the scan tool or the HDS indicates

another code.

Perform the troubleshooting for the indicated

code(s). Recheck for code P0730 after
troubleshooting.

Go to step 2.

NOTE: Do not continue with this troubleshooting
until the causes of any other DTCs have been
corrected.

2. Drain the ATF (see page 14-272) through a strainer.

Inspect the strainer for metal debris or excessive
clutch material.

Replace the transmission.

Replace the ATF (see page 14-272), then go to

step 3.

3. Measure the 1st, 2nd, 3rd, 4th, and 5th clutch

pressure (see page 14-254).

Go to step 4.

Repair the hydraulic system as necessary or

replace the transmission.

4. Replace the shift solenoid valves A, B, C, D, and E

(see page 14-260).

5. Replace the A/T clutch pressure control solenoid

valves B and C (see page 14-265).

6. Reset the PCM memory by removing the No. 6 ECU

(15 A) fuse in the under-hood fuse/relay box for
more than 10 seconds (see page 14-6).

7. Using the scan tool or the HDS, check to be sure

that the engine coolant temperature is 176 °F
(80 °C) or above. If the coolant temperature is low,
warm up the engine to normal operating
temperature (the radiator fan comes on).

8. Drive the vehicle at speeds over 12 mph (20 km/h)

in 1st, 2nd, 3rd, 4th, and 5th gears in D position for
more than 30 seconds.

9. Recheck for code P0730.

Replace the transmission.

The system is OK at this time.

Does the scan tool or the HDS indicate another
code?

Does the str ainer contain metal debr is or
excessive clutch mater ial?

Is each clutch pr essur e within the ser vice limit?

Does the scan tool or the HDS indicate code
P07 30?

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DTC P0740:

2002-2004 Models

YES

14-99

Problem in Lock-up Control

System

NOTE:

• Record all freeze data and review General

Troubleshooting Information (see page 14-3) before
you troubleshoot.

• Keep replacement solenoid valves on hand;

– A/T clutch pressure control solenoid valves A
– Shift solenoid valves E

1. Check whether the scan tool or the HDS indicates

another code.

Perform the troubleshooting for the indicated

code(s). Recheck for code P0740 after
troubleshooting.

Go to step 2.

NOTE: Do not continue with this troubleshooting
until the causes of any other DTCs have been
corrected.

2. Drain the ATF (see page 14-272) through a strainer.

Inspect the strainer for metal debris or excessive
clutch material.

Replace the transmission.

Replace the ATF (see page 14-272), then go to

step 3.

3. Measure the line pressure (see page 14-254).

Go to step 4.

Repair the hydraulic system as necessary or

replace the transmission.

4. Replace the shift solenoid valve E (see page 14-260).

5. Replace the A/T clutch pressure control solenoid

valve A (see page 14-263).

6. Reset the PCM memory by removing the No. 6

(15 A) ECU fuse in the under-hood fuse/relay box
for more than 10 seconds (see page 14-6).

7. Using the scan tool or the HDS, check to be sure

that the engine coolant temperature is 176 °F
(80 °C) or above. If the coolant temperature is low,
warm up the engine to normal operating
temperature (the radiator fan comes on).

8. Drive the vehicle at the freeze data speed or at

55 mph (88 km/h) in 5th gear for more than
1 minute.

9. Recheck for code P0740.

Replace the transmission and torque

converter.

The system is OK at this time.

Does the scan tool or the HDS indicate another
code?

Does the str ainer contain metal debr is or
excessive clutch mater ial?

Is the line pr essur e within the ser vice limit?

Does the scan tool or the HDS indicate code
P07 40?

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DTC P0745:

2002-2004 Models

YES

14-100

Automatic Transmission

DTC Troubleshooting (cont’d)

Problem in Hydraulic Control

System of A/T Clutch Pressure Control
Solenoid Valve A Circuit

NOTE: Record all freeze data and review General
Troubleshooting Information (see page 14-3) before
you troubleshoot.

1. Check whether the scan tool or the HDS indicates

another code.

Perform the troubleshooting for the indicated

code(s). Turn the ignition switch OFF, and go to
step 4 after troubleshooting.

Go to step 2.

2. Drain the ATF (see page 14-272) through a strainer.

Inspect the strainer for metal debris or excessive
clutch material.

Replace the transmission.

Replace the ATF (see page 14-272), then go to

step 3.

3. Turn the ignition switch OFF.

4. Replace the A/T clutch pressure control solenoid

valve A (see page 14-263).

5. Reset the PCM memory by removing the No. 6 ECU

(15 A) fuse in the under-hood fuse/relay box for
more than 10 seconds (see page 14-6).

6. Start the engine, and shift to M position. Start the

vehicle off in 1st, drive at 19 mph (30 km/h) for
10 seconds, shift to 2nd gear, drive at 19 mph
(30 km/h) for 10 seconds, then decelerate to a stop.

7. Repeat step 6 to test-drive the vehicle.

8. Recheck for DTC P0745.

Replace the transmission assembly.

The problem has been corrected.

Does the scan tool or the HDS indicate another
code?

Does the str ainer contain metal debr is or
excessive clutch mater ial?

Does the scan tool or the HDS indicate code
P07 45?

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