P0976

TX6A AUTOMATIC TRANSMISSION / TRANSAXLE: AUTOMATIC TRANSMISSION SYSTEM: P0976, P0977; Shift Solenoid "B" Control Circuit Low (Shift Solenoid Valve S2); 2013 MY FR-S [03/2012 -]
P0976 - Shift Solenoid "B" Control Circuit Low (Shift Solenoid Valve S2)
P0977 - Shift Solenoid "B" Control Circuit High (Shift Solenoid Valve S2)

DESCRIPTION

Based upon a signal from the TCM, the combination of shift solenoid valve (S1, S2, S3, S4, SR, SL1, SL2) changes the gear position from 1st to 6th. As a fail-safe function if the solenoid valve system is open or shorted, the TCM cuts power to all solenoids, leaving just the mechanical hydraulic circuit, requiring manual shifting.





MONITOR DESCRIPTION

These DTCs indicate an open or short in the shift solenoid valve S2 circuit. When there is an open or short circuit in any shift solenoid valve circuit, the TCM detects the problem and illuminates the MIL and stores the DTC.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS

P0976: Shift Solenoid2 (GND Short)





P0977: Shift Solenoid2 (Open/Battery Short)





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
Perform the universal trip to clear permanent DTCs Reading and Clearing Diagnostic Trouble Codes.

HINT
* The shift solenoid valve S2 is turned on/off normally when the shift lever is in the D position:






PROCEDURE

1. INSPECT TRANSMISSION WIRE (S2)

(a) Disconnect the A18 TCM connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard voltage:





(c) Measure the resistance according to the value(s) in the table below.

Standard resistance:





(d) Connect the A18 TCM connector.

NG -- CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM)
OK -- Continue to next step.

2. REPLACE TCM

(a) Replace the TCM Removal.

NEXT -- PERFORM THE RESET MEMORY Programming and Relearning

3. CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - TCM)

(a) Disconnect the A18 TCM connector.

(b) Disconnect the L4 transmission wire connector.

(c) Measure the voltage according to the value(s) in the table below.

Standard voltage:





(d) Measure the resistance according to the value(s) in the table below.

Standard resistance:





(e) Connect the A18 TCM connector.

(f) Connect the L4 transmission wire connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. INSPECT SHIFT SOLENOID VALVE S2

(a) Remove the shift solenoid valve S2 Removal.

(b) Perform inspection of the shift solenoid valve S2 Testing and Inspection.

NG -- REPLACE SHIFT SOLENOID VALVE S2 Removal

OK -- REPAIR OR REPLACE TRANSMISSION WIRE Removal