Suzuki Engine 2002 GRAND VITARA SQ625, Service Manual

Page: 191 / 834

6-1-50 ENGINE GENERAL INFORMATION AND DIAGNOSIS (H25 ENGINE)
C51-2-4
LT GRN/
WHT
EGR valve (stepper motor coil
2) 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)
C51-2-5 LT GRN
EGR valve (stepper motor coil
1) 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)
C51-2-6 PNK/BLK Fuel injector No.2 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.)
C51-2-7 PNK Fuel injector No.1 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.)
C51-2-8 BLK/GRN Ground for ECM Below 0.3 V Ignition switch turned ON
C51-2-9 BLK/BLU Ground for ECM Below 0.3 V Ignition switch turned ON
C51-2-10 BRN/YEL Ignition coil No.4 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.)
C51-2-11 BRN/WHT Ignition coil No.3 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.)
C51-2-12 BRN/BLK Ignition coil No.2 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.)
TERMINAL
NUMBER
WIRE
COLOR
CIRCUIT
NORMAL
VOLTAGE
CONDITION