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?

   Fig 1: Checking Park/Neutral Position (PNP) Switch Circuit

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

   Yes or No 

   1. Yes: Check park/neutral position (PNP) switch. Refer to "DTC P0705 PARK/NEUTRAL POSITION SWITCH ".
   2. No: GO TO 2.
2. ADJUST CONTROL CABLE 

   Check control cable. Refer to "CONTROL CABLE ADJUSTMENT "

   Fig 2: Adjusting Control Cable

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

   OK or NG 

   1. OK: GO TO 3.
   2. NG: Adjust control cable. Refer to "CONTROL CABLE ADJUSTMENT ".
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 

   1. OK: GO TO 4.
   2. 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.
      Fig 3: Checking A/T Fluid Condition

      Courtesy of NISSAN MOTOR CO., U.S.A.
   2. Check A/T fluid condition.

   OK or NG 

   1. OK: GO TO  6.
   2. 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 

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

   Check again.

   Fig 4: Moving Selector Lever From D To L Position

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

   OK or NG 

   1. OK: INSPECTION END 
   2. NG: GO TO 7.
7. CHECK TCM SECTION 
   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 

   1. OK: INSPECTION END 
   2. NG: Repair or replace damaged parts.