Suzuki Engine 2002 GRAND VITARA SQ625, Service Manual

Page: 192 / 834

ENGINE GENERAL INFORMATION AND DIAGNOSIS (H25 ENGINE) 6-1-51
C51-2-13 BRN Ignition coil No.1 output
0 – 0.6 V Ignition switch turned ON
✱
0 – 0.6 V
↑↓
2 – 4 V
(Repeated
indicator)
Engine running
(Output signal is active high pulse.
Pulse frequency varies depending on
engine speed.)
C51-2-14 PPL/BLK
IAC valve output (stepper
motor coil 2)
10 – 14 V Ignition switch turned ON
✱
0 – 1 V
↑↓
8 – 14 V
(Repeated
indicator)
While engine running.
(Output signal is active low duty pulse.
Pulse generated time depending vehi-
cle condition)
C51-2-15
LT GRN/
BLK
IAC valve output (stepper
motor coil 1)
0 – 1 V Ignition switch turned ON
✱
0 – 1 V
↑↓
8 – 14 V
(Repeated
indicator)
While engine running.
(Output signal is active low duty pulse.
Pulse generated time depending vehi-
cle condition)
C51-2-16
LT GRN/
RED
EGR valve (stepper motor coil
4) output (if equipped)
0 – 1 V Ignition switch turned ON
✱
0 – 1 V
↑↓
8 – 14 V
(Repeated
indicator)
While engine running.
(Output signal is active low duty pulse.
Pulse generated time depending vehi-
cle condition)
C51-2-17
LT GRN/
YEL
EGR valve (stepper motor coil
3) output (if equipped)
10 – 14 V Ignition switch turned ON
✱
0 – 1 V
↑↓
8 – 14 V
(Repeated
indicator)
While engine running.
(Output signal is active low duty pulse.
Pulse generated time depending vehi-
cle condition)
C51-2-18 PNK/BLU Fuel injector No.4 output
10 – 14 V
Ignition switch turned ON with engine
stop
✱
0 – 0.6 V
↑↓
10 – 14 V
(Repeated
indicator)
Engine running
(Output signal is active low pulse. Pulse
frequency varies depending on engine
speed.)
C51-2-19 PNK/GRN Fuel injector No.3 output
10 – 14 V
Ignition switch turned ON with engine
stop
✱
0 – 0.6 V
↑↓
10 – 14 V
(Repeated
indicator)
Engine running
(Output signal is active low pulse. Pulse
frequency varies depending on engine
speed.)
C51-2-20 BLU/BLK Main power supply 10 – 14 V Ignition switch turned ON
C51-2-21 BLU/BLK Main power supply 10 – 14 V Ignition switch turned ON
TERMINAL
NUMBER
WIRE
COLOR
CIRCUIT
NORMAL
VOLTAGE
CONDITION