DTC Troubleshooting: P0977
DTC P0977: Shift Solenoid Valve B (Open)
NOTE:
Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information.
This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
If DTC P0977 is stored in the PCM, the transmission does not shift to any gear other than 1st, 2nd, or 5th gear because of the fail-safe function.

DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P0977 Shift Solenoid Valve B (Open)
      

1.
Problem verification:

Problem verification
?1.
Press the engine start/stop button to select the ON mode.

?2.
Clear the DTC with the HDS.


?3.
Start the engine in P, and wait for at least 1 second.

?4.
Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P0977 Shift Solenoid Valve B (Open)
      

Is DTC P0977 indicated?

     
YES
     
     
     
The failure is duplicated. Go to step 2.
     
NO
     
     
     
Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between shift solenoid valve B and the PCM.?
2.
Determine possible failure area (shift solenoid valve B, others):

Determine possible failure area (shift solenoid valve B, others)
?1.
Press the engine start/stop button to select the OFF mode.

?2.
Disconnect the following connector.

?3.
Connect terminals A and B with a jumper wire.
Terminal A
Shift solenoid valve B 2P connector No. 1 (PNK)
Terminal B
Body ground


?4.
Press the engine start/stop button to select the ON mode.

?5.
Clear the DTC with the HDS.


?6.
Start the engine.

?7.
With the brake pedal pressed, shift to D, and wait for at least 3 seconds, then move the shift lever back into P.

?8.
Check for Pending or Confirmed DTCs with the HDS.
DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
P0976 Shift Solenoid Valve B (Short)
      

Is DTC P0976 indicated?

     
YES
     
     
     
Go to step 3.
     
NO
     
     
     
Go to step 4.
3.
Shift solenoid valve B check:

Shift solenoid valve B check
?1.
Press the engine start/stop button to select the OFF mode.

?2.
Remove the jumper wire.

?3.
Check for continuity between test points 1 and 2.
Test condition
OFF mode
 
Shift solenoid valve B 2P connector: disconnected
Test circuit
PG
Test point 1
Shift solenoid valve B 2P connector No. 2 (BLK)
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
     
NO
     
     
     
Shift solenoid valve B is OK. Repair an open in the PG wire between the PCM and body ground (G101) or repair poor body ground (G101).?
4.
Open wire check (SHB line):

Open wire check (SHB line)
?1.
Press the engine start/stop button to select the OFF mode.

?2.
Remove the jumper wire.

?3.
Jump the SCS line with the HDS.


?4.
Disconnect the following connector.

?5.
Check for continuity between test points 1 and 2.
Test condition
OFF mode
 
Shift solenoid valve B 2P connector: disconnected
 
PCM connector B (51P): disconnected
Test circuit
SHB
Test point 1
Shift solenoid valve B 2P connector No. 1 (PNK)
Test point 2
PCM connector B (51P) No. 4 (PNK)


Is there continuity?

     
YES
     
     
     
The SHB wire is OK. Replace the PCM.?
     
NO
     
     
     
Repair an open in the SHB wire between shift solenoid valve B and the PCM.?