Honda Civic manuals

Subaru Legacy Service Manual: Dtc p0965 pressure control solenoid "b" control circuit range/performance

DTC DETECTING CONDITION:

Immediately at fault recognition

TROUBLE SYMPTOM:

Engine speed increases abruptly, and can not accelerate.

Excessive slippage is felt.

1. ENGINE TYPE FB

WIRING DIAGRAM:

CVT control system CVT Control System > WIRING DIAGRAM

STEPCHECKYESNO

1.CHECK DTC.

Read the DTC using Subaru Select Monitor.

Besides DTC P0965, is any of the DTC P0717, P0966, P0967 or P2747 displayed-

Perform the diagnosis according to DTCs other than P0965.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0965 PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT RANGE/PERFORMANCE

2.CHECK F&R SOLENOID (ACTIVE TEST).

1) Turn the ignition switch to ON.

2) Using the Subaru Select Monitor, perform forced operation of the F&R solenoid. Active Test

Does the indication change as 300 > 500 > 700 mA during forced operation, and does «F&R Linear Solenoid Actual Current» synchronize with «F&R Linear Solenoid Set Current»-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0965 PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT RANGE/PERFORMANCE

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0965 PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT RANGE/PERFORMANCE

3.CHECK FOR POOR CONTACT.

Check for poor contact of harness and connector between TCM and F&R solenoid.

Is there poor contact-

Repair the poor contact of harness and connector.

Recheck the poor contact of harness and connector. Replace the TCM if no fault is found. Transmission Control Module (TCM)

4.CHECK F&R SOLENOID.

1) Turn the ignition switch to OFF.

2) Disconnect the TCM connector.

3) Measure the resistance between TCM connector and transmission body.

Connector & terminal

(T10) No. 16 — Transmission body:

Is the resistance approx. 4 — 6 -- (when cold)

Replace the control valve body. Control Valve Body

Repair or replace the harness.

2. ENGINE TYPE EZ

WIRING DIAGRAM:

CVT control system CVT Control System > WIRING DIAGRAM

STEPCHECKYESNO

1.CHECK DTC.

Read the DTC using Subaru Select Monitor.

Besides DTC P0965, is any of the DTCs P0720, P0966, P0967, P1706 and P2751 displayed-

Perform the diagnosis according to DTCs other than P0965.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0965 PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT RANGE/PERFORMANCE

2.CHECK F&R SOLENOID (ACTIVE TEST).

1) Turn the ignition switch to ON.

2) Using the Subaru Select Monitor, perform forced operation of the F&R solenoid. Active Test

Does the indication change as 300 > 500 > 700 mA during forced operation, and does «F&R Linear Solenoid Actual Current» synchronize with «F&R Linear Solenoid Set Current»-

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0965 PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT RANGE/PERFORMANCE

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0965 PRESSURE CONTROL SOLENOID "B" CONTROL CIRCUIT RANGE/PERFORMANCE

3.CHECK FOR POOR CONTACT.

Check for poor contact of harness and connector between TCM and F&R solenoid.

Is there poor contact-

Repair the poor contact of harness and connector.

Recheck the poor contact of harness and connector. Replace the TCM if no fault is found. Transmission Control Module (TCM)

4.CHECK F&R SOLENOID.

1) Turn the ignition switch to OFF.

2) Disconnect the transmission connector.

3) Measure the resistance between transmission connector and transmission body.

Connector & terminal

(T4) No. 9 — Transmission body:

Is the resistance approx. 4 — 6 -- (when cold)

Replace the control valve body. Control Valve Body

Repair or replace the harness.

3. OUTLINE OF DIAGNOSIS

Diagnosis 1

Detect the malfunction of transmission forward/reverse clutch pressure solenoid drive circuit characteristics.

Judge as NG when the deviation between set current and actual current of the transmission forward/reverse clutch pressure solenoid drive circuit becomes equal to or larger than the predetermined value.

Diagnosis 2

Detect the malfunction of transmission forward/reverse clutch pressure solenoid drive circuit characteristics.

Judge as NG when the transmission forward/reverse clutch pressure solenoid drive current is within the predetermined value.

4. EXECUTION CONDITION

Secondary Parameters

Execution condition

Diagnosis 1

12 V battery system voltage

≥ 9 V

Diagnosis 2

12 V battery system voltage

≥ 9 V

5. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment Value

Malfunction Criteria

Threshold Value

Diagnosis 1

|Target forward & reverse clutch pressure control solenoid current − Measured forward & reverse clutch pressure control solenoid circuit|

> 0.2 A

Diagnosis 2

Measured forward & reverse clutch pressure control solenoid current

> 1.08 A

and

≤ 1.6 A

Time Needed for Diagnosis: 5 seconds

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

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