Vehicle Does Not Decelerate By Engine Brake

SYMPTOM: 

Vehicle does not decelerate by engine brake when shifting from D3 to L2. 

1. CHECK PARK/NEUTRAL POSITION (PNP) SWITCH CIRCUIT 

   With CONSULT-II 

   Does "DATA MONITOR" show damage to park/neutral position (PNP) switch circuit?

   Without CONSULT-II 

   Does self-diagnosis show damage to park/neutral position (PNP) switch circuit?

   Yes or No

   • Yes: Check park/neutral position (PNP) switch. Refer to "DTC P0705 PARK/NEUTRAL POSITION SWITCH ".
   • No: GO TO 2.
     Fig 1: Checking Park/Neutral Position (PNP) Switch Circuit

     Courtesy of NISSAN MOTOR CO., U.S.A.
2. ADJUST CONTROL CABLE 

   Check control cable. Refer to "CONTROL CABLE ADJUSTMENT "

   OK or NG

   • OK: GO TO 3.
   • NG: Adjust control cable. Refer to "CONTROL CABLE ADJUSTMENT ".
     Fig 2: Adjusting Control Cable

     Courtesy of NISSAN MOTOR CO., U.S.A.
3. CHECK VEHICLE SPEED SENSOR A/T AND VEHICLE SPEED Sensor MTR CIRCUIT 

   Check vehicle speed Sensor A/T (revolution sensor) and vehicle speed Sensor MTR circuit. Refer to "DTC P0720 VEHICLE SPEED SENSOR A/T (REVOLUTION SENSOR) " and "DTC VEHICLE SPEED SENSOR MTR ".

   OK or NG

   • OK: GO TO 4.
   • NG: Repair or replace vehicle speed Sensor A/T (revolution sensor) and vehicle speed Sensor MTR circuits.
4. CHECK A/T FLUID CONDITION 
   1. Remove oil pan.
   2. Check A/T fluid condition.
      Fig 3: Checking A/T Fluid Condition

      Courtesy of NISSAN MOTOR CO., U.S.A.

   OK or NG

   • OK: GO TO 6.
   • NG: GO TO 5.
5. DETECT MALFUNCTIONING ITEM 
   1. Remove control valve assembly. Refer to "CONTROL VALVE ASSEMBLY AND ACCUMULATORS ".
   2. Check the following items:
      • Shift valve A
      • Overrun clutch solenoid valve
   3. Disassemble A/T.
   4. Check the following items:
      • Overrun clutch assembly
      • Low & reverse brake assembly

   OK or NG

   • OK: GO TO 6.
   • NG: Repair or replace damaged parts.
6. CHECK SYMPTOM 

   Check again.

   OK or NG

   • OK: INSPECTION END 
   • NG: GO TO 7.
     Fig 4: Moving Selector Lever (D3 To L2)

     Courtesy of NISSAN MOTOR CO., U.S.A.
7. CHECK TCM INSPECTION 
   1. Perform TCM input/output signal inspection. Refer to "TCM TERMINALS AND REFERENCE VALUE ".
   2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

   OK or NG

   • OK: INSPECTION END 
   • NG: Repair or replace damaged parts.