Suzuki SY413 Service Manual page 2712

TABLE B-7 ELECTRIC LOAD SIGNAL CIRCUIT CHECK
Tail light relay
(Lighting switch)
Rear defogger
switch (if equipped)
Heater blower
switch
INSPECTION
STEP
1 Check Electric Load Signal Circuit.
1) Connect SUZUKI scan tool to DLC with ignition switch
OFF.
2) Start engine and select "DATA LIST" mode on scan
tool.
3) Check electric load signal under following each condi-
tion. See Fig. 1.
Ignition switch ON, Small light,
heater blower fan and rear
defogger all turned OFF
Ignition switch ON, Small light,
heater blower fan or rear
defogger turned ON
Is check result satisfactory?
Is each voltage as specified?
Fig.1 for Step 1
ENGINE GENERAL INFORMATION AND DIAGNOSIS (G13/G16 ENGINE WITH WU TWC) 6-1-113
Diodes in junction/
fuse block
ACTION
: OFF
: ON
YES
Electric load signal "P/Bl" and/or "P/B"
circuit is in good circuit open or
condition. short, Electric load
diodes malfunction
or Each electric
load circuit mal-
function.
NO