YH4
GRAND
VITARA
1. Fluid pressure check hole
2. Oil pan
1. Oil pan
2. Exhaust pipe
7B1-54 AUTOMATIC TRANSMISSION (4 A/T)
LINE PRESSURE TEST
Purpose of this test is to check operating conditions of each part by
measuring fluid pressure in fluid pressure line. Line pressure test
requires following conditions.
D Automatic fluid is at normal operating temperature (70 to 80_C /
158 – 176_F).
D Fluid is filled to proper level (between FULL HOT and LOW HOT
on dipstick).
1) Apply parking brake securely and place checks against wheels.
2) Attach oil pressure gauge to fluid pressure check hole in trans-
mission case.
Special Tool
(A): 09925-37810
CAUTION:
After attaching oil pressure gauge, check that not fluid
leakage exists.
3) Depress foot brake fully, run engine at idle and stall and then
check fluid pressure in “D” or “R” range.
CAUTION:
Do not continue running engine at stall speed longer than
5 seconds.
G16 Engine
Engine running
Line pressure
mode
“D” range “R” range
At idle speed
3.9 – 4.4 kg/cm
2
55 – 63 psi
5.1 – 5.7 kg/cm
2
73 – 81 psi
At stall speed
11.7 – 13.2 kg/cm
2
166 – 188 psi
14.2 – 16.7 kg/cm
2
202 – 237 psi
J20 Engine
Engine running
Line pressure
mode
“D” range “R” range
At idle speed
3.8 – 4.3 kg/cm
2
54 – 61 psi
5.3 – 5.9 kg/cm
2
75 – 84 psi
At stall speed
9.7 – 11.2 kg/cm
2
138 – 159 psi
12.9 – 15.5 kg/cm
2
183 – 220 psi
H25 Engine
Engine running
Line pressure
mode
“D” range “R” range
At idle speed
3.9 – 4.4 kg/cm
2
55 – 63 psi
6.6 – 7.2 kg/cm
2
94 – 102 psi
At stall speed
11.3 – 12.7 kg/cm
2
161 – 181 psi
14.7 – 22.7 kg/cm
2
209 – 323 psi
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