Suzuki Engine 2002 GRAND VITARA SQ625, Service Manual

Page: 183 / 834

6-1-42 ENGINE GENERAL INFORMATION AND DIAGNOSIS (H25 ENGINE)
1. ECM (PCM)
2. Connector (viewed from harness side)
TERMINAL
NUMBER
WIRE
COLOR
CIRCUIT
NORMAL
VOLTAGE
CONDITION
E61-1 WHT/GRN
Fuel pump relay output (with-
out immobilizer control sys-
tem) 0 – 2.5 V
While 3 sec. after ignition switch turned
ON or while engine running
10 – 14 V
After ignition switch turned ON for 3
sec. or while engine stopping
E61-2 – – – –
E61-3 PNK/BLU
OD off signal output for cruise
control module (if equipped)
0 – 1 V
Ignition switch turned ON, OD OFF
selector switch selected at OD OFF
10 – 14 V
Ignition switch turned ON, OD OFF
selector switch selected at OD ON
E61-4 BRN
Engine revolution signal out-
put for tachometer
0 – 0.8 V
Ignition switch turned ON with engine
stop
✱
0 – 1 V
↑↓
8 – 14 V
(Repeated
indicator)
While engine running.
(Output signal is pulse. Pulse frequency
varies depending on engine speed.
(3000 r/min = 100 Hz)
E61-5 YEL/BLU
A/C condenser fan motor relay
(if equipped)
10 – 14 V
Ignition switch turned ON, Engine cool-
ant temperature under 115°C, 239°F or
A/C request signal high input
0 – 1 V
Ignition switch turned ON, Engine cool-
ant temperature more than 114°C,
237°F or A/C request signal low input
E61-6 GRY
Throttle position signal for
cruise control module (if
equipped)
✱
0 – 0.6 V
↑↓
8 – 12 V
(Repeated
indicator)
Ignition switch turned ON (Output sig-
nal is 40 Hz active low duty pulse. Duty
ratio varies as throttle valve is opened
gradually.)
Throttle opening 0% = 0.9ms ON duty
Throttle opening 100% = 9.2 ms ON
duty
E61-7 WHT/BLK
“OD OFF” lamp output (A/T
vehicle)
0 – 1 V
Ignition switch turned ON, “OD OFF”
selector switch selected at OD OFF
10 – 14 V
Ignition switch turned ON, “OD OFF”
selector switch selected at OD ON
E61-8 BLU
Main power supply relay out-
put 10 – 14 V Ignition switch turned OFF
0 – 2 V Ignition switch turned ON