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14–2
8.
INSPECT ENGINE IDLE SPEED
(a)
Warm up engine.
(b)
When using hand–held tester or OBDII scan tool.
(1)
Connect the hand–held tester or OBDII scan tool to the DLC3.
HINT:
Please refer to the hand – held tester or OBDII scan tool operator's manual for further details.
(c)
Check the idle speed.
Idle speed: 650 – 750 rpm
NOTICE:
Check idle speed with cooling fan OFF.
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Switch off all accessories and air conditioning.
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2004 COROLLA (RM1037U)
ENGINE MECHANICAL
–
ENGINE ASSEMBLY
(6)
Disconnect the terminal 13 (TC) and 4 (CG) of the
DLC3.
(7)
Inspect ignition timing at idle.
Ignition timing: 10 – 18 _BTDC
(8)
Confirm that ignition timing moves to advanced
angle side when the engine rpm is increased.
(9)
Remove the timing light.
(10) Install cylinder head cover No.2 with the 2 nuts and
2 clips.
Torque: 7.0 N⋅m (71 kgf⋅cm, 62 in.⋅lbf)
9.
INSPECT COMPRESSION
(a)
Warm up and stop engine.
(b)
Remove ignition coil.
(c)
Remove spark plugs.
(d)
Inspect cylinder compression pressure.
SST
(1)
Insert a compression gauge into the spark plug
hole.
(2)
Fully open the throttle.
A01037
(3)
While cranking the engine, measure the compres-
sion pressure.
Compression pressure
1,300 kPa (13.3 kgf⋅cm
Minimum pressure: 1,000 kPa (10.2 kgf⋅cm
Difference between each cylinder:
100 kPa (1.0 kgf⋅cm
NOTICE:
Always use a fully charged battery to obtain engine
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speed of 250 rpm or more.
Check other cylinder's compression pressure in the
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same way.
This measurement must be done in as short a time as
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possible.
09992–00500
2
, 189 psi)
2
, 15 psi)
2
, 145 psi)
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