1998 NISSAN GT-R lock

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Page 56 of 230

NISSAN GT-R 1998  Service Manual 
TROUBLE DIAGNOSES 
Fail-safe Function (Contd) 
SHIFT SOLENOID A, B 
When a  malfunctioning  signal of solenoid  is input  to TCM and ECM-TCM, the gear is shifted as  follows. 
Normal Abnormal  solen

Page 58 of 230

NISSAN GT-R 1998  Service Manual 
TROUBLE DIAGNOSES 
Clutch and Band Chart 
U0.C 
(Low  one- 
way 
clutchl  L&R/B 
(Low and 
reverse 
brake) 
F/O C 
(Forward 
clutch) 
. 
Remarks 
PARK  POSI- 
TION 
REVERSE POSITION 
O/C 
(Overrun 
c

Page 62 of 230

NISSAN GT-R 1998  Service Manual 
TROUBLE DIAGNOSES 
Control Unit Input/Output  Signal Specifications 
Refer  to EC section ("ECM.TCM or ECM Input/Output Signal 
Reference Value"). 
USING CONSULT - 
Monitor  item  Indication value  O

Page 64 of 230

NISSAN GT-R 1998  Service Manual 
TROUBLE DIAGNOSES 
Control Unit InputlOutput Signal Specifications 
(Contd) 
Terminal 
No.  Operation 
or  measurement  condition 
Specifications 
Total  control signal 
(multiple communication) 
(

Page 67 of 230

NISSAN GT-R 1998  Service Manual 
TROUBLE DIAGNOSES 
Shift Schedule 
VEHICLE SPEED WHEN SHIFTING GEARS 
RB20DE engine (4AX03 model) 
I 1 Vehicle  meed  km/h 
Throttle  opening 
Full  throttle 
RB25DE  engine (4AX01 model) 
Shift patt

Page 68 of 230

NISSAN GT-R 1998  Service Manual 
TROUBLE DIAGNOSES 
n t 
\-Test port for "D", "2", and "1" positions 
I Test  port for "I?" position I 
Line  pressure  specification 
Basic Inspection 
Arr FLUlD 
Check A/T fluid for leakage  and fl

Page 69 of 230

NISSAN GT-R 1998  Service Manual 
TROUBLE DIAGNOSES 
Line Pressure Test (Contd) 
JUDGEMENT OF LINE PRESSURE TEST 
At idle 
speed 
At  stall 
speed  Judgement 
Line  pressure  is low  in all 
positions. 
Line pressure  is low  in par

Page 71 of 230

NISSAN GT-R 1998  Service Manual 
TROUBLE DIAGNOSES 
DESCRIPTION 
CONSULT indicates operation timing  of each  solenoid  such as electrical  shift timing  and lock-up  timing. 
Therefore,  when  there  is a definite  difference betwe
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