Suzuki 2006 SX4, Service Manual

Page: 347 / 1478

Ignition System: 1H-7
Ignition Timing Inspection
S6RW0C1806005
NOTE
• Ignition timing is not adjustable. If ignition
timing is out of specification, check
system related parts.
• Before starting engine, place transmission
gear shift lever in “Neutral” (shift selector
lever to “P” range for A/T model), and set
parking brake.
1) Detach timing hole cover (1).
2) Connect scan tool to DLC (1) with ignition switch
OFF.
Special tool
(A): SUZUKI scan tool (SUZUKI-SDT)
3) Start engine and warm it up to normal operating
temperature.
4) Make sure that all of electrical loads except ignition
are switched off.
5) Check to be sure that idle speed is within
specification referring to “Idle Speed and IAC
Throttle Valve Opening Inspection in Section 1A”.
6) Fix ignition timing by using “Fixed Spark” of “Misc
Test” mode on scan tool.
7) Set timing light to ignition coil harness for No.1
cylinder and check that ignition timing is within
specification.
Initial ignition timing
Fixed with SUZUKI scan tool: 2
°
– 8
°
BTDC (at
specified idle speed)
Ignition order
1 – 3 – 4 – 2
Special tool
(A): 09930–76420
8) If ignition timing is out of specification, check the
followings.
• CKP sensor
• CKP sensor plate
• TP sensor
• CMP sensor
• CMP sensor rotor tooth of camshaft
• Wheel speed sensor (VSS)
• Knock sensor
• Timing chain cover installation
9) After checking initial ignition timing, release ignition
timing fixation by using SUZUKI scan tool.
10) With engine idling (throttle opening at closed position
and vehicle stopped), check that ignition timing is
about 3
°
– 17
°
BTDC. (Constant variation within a
few degrees from 3
°
– 17
°
BTDC indicates no
abnormality but proves operation of electronic timing
control system.) Also, check that increasing engine
speed advances ignition timing.
If the check results are not satisfactory, check CKP
sensor and ECM.
1
I7RW01180006-01
(A)
1
I5RW0C110011-01
1. Timing mark on clutch housing or torque converter housing
2. Timing mark BTDC 5
°
I7RW01180008-01