Suzuki Grand Vitara JB416 / JB420. Service manual - part 116

1D-132 Engine Mechanical: For J20 Engine

09944–36011
Steering wheel remover
)

Engine Lubrication System: For M16A Engine with VVT 1E-1

Engine

Engine Lubrication System

For M16A Engine with VVT

General Description

Engine Lubrication Description

S5JB0A1511001

The oil pump is of a trochoid type, and mounted on the crankshaft. Oil is drawn up through the oil pump strainer and 
passed through the pump to the oil filter.
The filtered oil flows into two paths in cylinder block.
In one path, oil reaches the crankshaft journal bearings. Oil from the crankshaft journal bearings is supplied to the 
connecting rod bearings by means of intersecting passages drilled in the crankshaft, and then injected from the big 
end of connecting rod to lubricate piston, rings and cylinder wall.
In the other path oil goes up to the cylinder head and lubricates valves and camshafts, etc., after passing through the 
internal oilway of camshafts.
An oil relief valve is provided on the oil pump. This valve starts relieving oil pressure when the pressure exceeds 
specified pressure.

1E-2 Engine Lubrication System: For M16A Engine with VVT

I3RH0B150001-01

Engine Lubrication System: For M16A Engine with VVT 1E-3

Diagnostic Information and Procedures

Oil Pressure Check

S5JB0A1514001

NOTE
Prior to checking oil pressure, check the 
following.
• Oil level in oil pan

If oil level is low, add oil up to Full level 
mark (hole) (1) on oil level gauge referring 
to “Engine Oil and Filter Change in Section 
0B”.

• Oil quality

If oil is discolored or deteriorated, change 
it. For particular oil to be used, refer to 
“Engine Oil and Filter Change in Section 
0B”.

• Oil leaks

If leak is found, repair it.

 

1) Disconnect oil pressure switch coupler (1).
2) Remove oil pressure switch (2) from cylinder block.

3) Install special tools (oil pressure gauge) to vacated 

threaded hole of oil pressure switch.

Special tool
(A):  09915–77310
(B):  09915–78211

4) Start engine and warm engine up to normal 

operating temperature.

NOTE
Be sure to shift transaxle gear shift lever in 
“Neutral”, set parking brake and block drive 
wheels.

 

5) After warming up, raise engine speed to 4,000 r/min. 

and measure oil pressure.

Oil pressure specification
More than 270 kPa (2.7 kg/cm

2

, 39.8 psi) at 4,000 

r/min. (rpm)

6) After checking oil pressure, stop engine and remove 

oil pressure gauge and attachment.

7) Before reinstalling oil pressure switch (2), be sure to 

wrap its screw threads with sealing tape (1) and 
tighten switch to specified torque.

NOTE
If sealing tape edge is bulged out from screw 
threads of switch, cut it off.

 

Tightening torque
Oil pressure switch (a):  13 N·m (1.3 kgf-m, 9.5 
lb-ft)

2. Low level mark (hole)

I2RH0B150002-01

1

2

I5JB0A151001-01

(A)

(B)

I5JB0A151002-01

1

2

2, (a)

I5JB0A151004-01