Suzuki WagonR+ RB310, Service Manual

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6F1-8 IGNITION SYSTEM (ELECTRONIC IGNITION SYSTEM)
5) Fix ignition timing to initial one as follows.
When using SUZUKI scan tool:
Select
“ MISC ” mode on SUZUKI scan tool and fix ignition tim-
ing to initial one.
When not using SUZUKI scan tool:
Disconnect scan tool from DLC, and connect D and E terminals
of diagnosis connector (1) or E to body ground by using service
wire so that ignition timing is fixed on initial one.
6) Open air cleaner upper case and shift upper case and hose
position to observe ignition timing.
7) Using timing light (1), check that ignition timing is within specifi-
cation.
Initial ignition timing (Test switch
terminal grounded or fixed with
SUZUKI scan tool)
: 5
!
3
"
BTDC at idle speed
Ignition order : 1-3-4-2
8) If ignition timing is out of specification, check the followings:
!
CKP sensor
!
Crankshaft timing belt pulley (signal rotor)
!
TP sensor
!
Test switch signal circuit
!
VSS
!
Timing belt cover installation
9) After checking Initial Ignition Timing, release ignition timing
fixation by using SUZUKI scan tool or disconnect service wire
from diagnosis connector.
10) With engine idling (test switch terminal ungrounded, throttle
opening at closed position and car stopped), check that ignition
timing is about 9
"
– 15
"
BTDC. (Constant variation within a few
degrees from 9
"
– 15
"
indicates no abnormality but proves op-
eration of electronic timing control system.) Also, check that in-
creasing engine speed advances ignition timing.
If above check results are not satisfactory, check CKP sensor,
test switch terminal circuit and ECM.
11) Install air cleaner upper case.