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Acura CSX. Manual - part 231

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How to Troubleshoot Circuits at the PCM
Connectors

14-5

NOTE: The PCM overwrites data and monitors the EVAP
system for about 30 minutes after the ignition switch is
turned to LOCK (0) or ACC (I). Jumping the SCS line
after turning the ignition switch to LOCK (0) or ACC (I)
cancels this function. Disconnecting the PCM during
this function, without jumping the SCS line first, can
damage the PCM.

1. Make sure the ignition switch is turned to LOCK (0),

then jump the SCS line with the HDS.

2. Remove the cover (A).

3. Lift up the under-hood fuse/relay box (D).

4. Remove the coolant reservoir (E). Disconnect PCM

connectors A, B, and C, and probe the terminals
from the terminal side of the connectors.

NOTE: PCM connectors A, B, and C have symbols
(A=

, B=

, C=

) embossed on them for

identification.

5. When diagnosis/troubleshooting is done at the

PCM connector, use the terminal test port (A) above
the terminal you need to check.

6. Connect one side of the patch cord’s terminals (A)

to a commercially available digital multimeter (B),
and connect the other side cord’s terminals (C) to a
commercially available banana jack (Pomona
Electronics Tool No. 3563 or equivalent) (D).

7. Gently contact the pin probe (male) at the terminal

test port from the terminal side. Do not force the
tips into the terminals.

• For accurate results, always use the pin

probe (male).

• To prevent damage to the connector

terminals, do not insert test equipment
probes, paper clips, or other substitutes as
they can damage the terminals. Damaged
terminals cause a poor connection and an
incorrect measurement.

• Do not puncture the insulation on a wire.

Punctures can cause poor or intermittent
electrical connections.

08/08/21 14:37:07 61SNR030_140_0007

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Clear A/T DTCs Procedure

OBD Status

How to End a Troubleshooting Session
(required after any troubleshooting)

Failure Reproduction Technique

14-6

Automatic Transmission

1. Connect the HDS to the DLC (A) located under the

driver’s side of the dashboard.

2. Turn the ignition switch to ON (II).

3. Make sure the HDS communicates with the PCM. If

it does not, go to the DLC circuit troubleshooting
(see page 11-204).

4. Clear the DTC(s) on the HDS screen.

The OBD status shows the current system status of
each DTC and all of the parameters. This function is
used to see if the technician’s repair was successfully
completed. The results of diagnostic tests for the DTC
are displayed as:

• PASSED: The on-board diagnosis is successfully

completed.

• FAILED: The on-board diagnosis has finished but

failed.

• NOT COMPLETED: The on-board diagnosis was

running but is out of the enable conditions of the DTC.

NOTE: Reset the PCM with the HDS while the engine is
stopped.

1. Turn the ignition switch to LOCK (0).

2. Turn the ignition switch to ON (II), and wait for

30 seconds.

3. Turn the ignition switch to LOCK (0), and

disconnect the HDS from the DLC.

4. Do the PCM idle learn procedure (see page 11-310).

5. Start the engine with the shift lever in P or N, and

warm it up to normal operating temperature (the
radiator fan comes on).

6. To verify that the problem is repaired, test-drive the

vehicle for several minutes at speeds over 50 km/h
(31 mph) or under the same conditions as those
indicated by the freeze data.

Make sure to follow these points while the vehicle is
raised on a lift for the test-drive.

• Disable the VSA by pressing the VSA OFF switch.
• VSA DTC’s may come on when test-driving on a lift. If

the VSA DTC(s) come on, clear the DTC(s) with the
HDS.

08/08/21 14:37:07 61SNR030_140_0008

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DTC

MIL

Detection Item

Page

(1)

Two Drive

Cycle

Detection

Indicator

14-7

DTC Troubleshooting Index

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review General
Troubleshooting Information (see page 14-3).

P0107 (12)

Blinks

ON or

OFF

Manifold Absolute Pressure (MAP) Sensor
Circuit Low Voltage

(see page 14-80)

P0108 (12)

Blinks

ON or

OFF

Manifold Absolute Pressure (MAP) Sensor
Circuit High Voltage

(see page 14-80)

P0335 (88)

Blinks

ON or

OFF

Crankshaft Position (CKP) Sensor No
Signal

(see page 14-81)

P0339 (88)

Blinks

ON or

OFF

Crankshaft Position (CKP) Sensor
Intermittent Interruption

(see page 14-81)

P0365 (89)

Blinks

ON or

OFF

Camshaft Position (CMP) Sensor B No
Signal

(see page 14-82)

P0369 (89)

Blinks

ON or

OFF

Camshaft Position (CMP) Sensor B
Intermittent Interruption

(see page 14-82)

P0705 (5)

Blinks

Short in Transmission Range Switch
Circuit (Multiple Shift-position Input)

(see page 14-83)

P0706 (6)

OFF

Open in Transmission Range Switch
Circuit

(see page 14-92)

P0711 (28)

Blinks

OFF

Problem in ATF Temperature Sensor
Circuit

(see page 14-96)

P0712 (28)

Blinks

OFF

Short in ATF Temperature Sensor Circuit

(see page 14-98)

P0713 (28)

Blinks

OFF

Open in ATF Temperature Sensor Circuit

(see page 14-100)

P0716 (15)

Blinks

Problem in Input Shaft (Mainshaft) Speed
Sensor Circuit

(see page 14-103)

P0717 (15)

Blinks

Problem in Input Shaft (Mainshaft) Speed
Sensor Circuit (No Signal Input)

(see page 14-103)

P0718 (15)

Blinks

Input Shaft (Mainshaft) Speed Sensor
Intermittent Failure

(see page 14-107)

P0721 (9)

Blinks

Problem in Output Shaft (Countershaft)
Speed Sensor Circuit

(see page 14-111)

P0722 (9)

Blinks

Problem in Output Shaft (Countershaft)
Speed Sensor Circuit (No Signal Input)

(see page 14-111)

P0723 (9)

Blinks

Output Shaft (Countershaft) Speed Sensor
Intermittent Failure

(see page 14-116)

NOTE:

(1): The DTC in parentheses is the flash code the D indicator indicates when the data link connector (DLC) is

connected to the HDS, and in the SCS mode.

(2): This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the

transmission.

(3): The MIL comes on when the PGM-FI system detects the same failure.

(3)

(2)

08/08/21 14:37:07 61SNR030_140_0009

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DTC

MIL

Detection Item

Page

(1)

Two Drive

Cycle

Detection

Indicator

14-8

Automatic Transmission

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review General
Troubleshooting Information (see page 14-3).

P0731 (64)

Blinks

OFF

Problem in 1st Clutch and 1st Clutch
Hydraulic Circuit (1st Gear Incorrect Ratio)

(see page 14-120)

P0732 (64)

Blinks

OFF

Problem in 2nd Clutch and 2nd Clutch
Hydraulic Circuit (2nd Gear Incorrect Ratio)

(see page 14-122)

P0733 (64)

Blinks

OFF

Problem in 3rd Clutch and 3rd Clutch
Hydraulic Circuit (3rd Gear Incorrect Ratio)

(see page 14-123)

P0734 (64)

Blinks

OFF

Problem in 4th Clutch and 4th Clutch
Hydraulic Circuit (4th Gear Incorrect Ratio)

(see page 14-125)

P0735 (64)

Blinks

OFF

Problem in 5th Clutch and 5th Clutch
Hydraulic Circuit (5th Gear Incorrect Ratio)

(see page 14-126)

P0741 (40)

Blinks

OFF

Torque Converter Clutch Hydraulic Circuit
Stuck OFF

(see page 14-128)

P0747 (76)

Blinks

A/T Clutch Pressure Control Solenoid
Valve A Stuck ON

(see page 14-129)

P0752 (70)

Blinks

Shift Solenoid Valve A Stuck ON

(see page 14-130)

P0756 (71)

Blinks

Shift Solenoid Valve B Stuck OFF

(see page 14-132)

P0757 (71)

Blinks

Shift Solenoid Valve B Stuck ON

(see page 14-132)

P0761 (72)

Blinks

Shift Solenoid Valve C Stuck OFF

(see page 14-133)

P0771 (74)

Blinks

Shift Solenoid Valve E Stuck OFF

(see page 14-135)

P0776 (77)

Blinks

A/T Clutch Pressure Control Solenoid
Valve B Stuck OFF

(see page 14-136)

P0777 (77)

Blinks

A/T Clutch Pressure Control Solenoid
Valve B Stuck ON

(see page 14-136)

P0780 (45)

Blinks

Shift Control System

(see page 14-138)

P0796 (78)

Blinks

A/T Clutch Pressure Control Solenoid
Valve C Stuck OFF

(see page 14-139)

P0797 (78)

Blinks

A/T Clutch Pressure Control Solenoid
Valve C Stuck ON

(see page 14-139)

08/08/21 14:37:07 61SNR030_140_0010

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