Suzuki Liana RH418, Supplementary Service Manual

Page: 90 / 371

1A-77 Engine General Information and Diagnosis:
Terminal No. Circuit Normal Voltage Condition
G03-1 Tachometer
0 – 1 V Ignition switch ON
*0 – 1 V
↑↓
8 – 14 V
(Reference waveform
No.19 and No.20)
While engine running.
Output signal is pulse. (Pulse frequency varies
depending on engine speed. (3000 r/min. = 100
Hz)
G03-2 — — —
G03-3 — — —
G03-4
A/C compressor operation
signal (if equipped) 0 – 1 V Engine running and A/C operated
6 – 10 V Engine running and A/C not operated
G03-5
Engine torque signal for
TCM (A/T)
9 – 13 V Ignition switch ON
0 – 1 V
↑↓
9 – 13 V
Engine running at after warming up.
(Output signal is 128 Hz low duty pulse. Duty
ratio varies depending on engine torque)
G03-6 D-range ID-up signal (A/T)
0 – 1 V
Ignition switch turned ON and transmission select
lever in “P” or “N” range.
10 – 14 V
Ignition switch turned ON and transmission select
lever in “R” or “D”, “2” or “L” range.
G03-7 Malfunction indicator lamp
0 – 1 V Ignition switch ON
10 – 14 V When engine running
G03-8
Data link connector
(SUZUKI serial data line)
4 – 6 V Ignition switch ON
G03-9
Engine coolant temp.
signal for meter
*0 – 1 V
↑↓
10 – 14 V
(Reference waveform
No.21)
Ignition switch turned ON.
(Output signal is active low duty pulse. Duty ratio
varies depending on ECT.)
40
°
C = 10% ON duty
120
°
C = 90% ON duty
G03-10 Electric load signal (–)
4 – 14 V
Ignition switch turned ON and blower motor
switch turned to 1st speed position or OFF
0 – 2 V
Ignition switch turned ON and blower motor
switch turned to 2nd speed position or more.
G03-11 Power source for back-up 10 – 14 V Anytime
G03-12
Torque control input signal
(A/T)
10 – 14 V Ignition switch ON
0 – 1 V
↑↓
4 – 6 V
Vehicle running at after warming up.
(Signal from TCM is 100 Hz low duty pulse. Pulse
generated time is shifting time when transmission
gear is shifted by TCM.)
G03-13
Data link connector (K line
of ISO 9141)
10 – 14 V Ignition switch ON
G03-14
Throttle opening signal for
TCM (A/T)
0 – 0.6 V
↑↓
8 – 12 V
Ignition switch turned ON.
(Output signal is 128 Hz active low duty pulse.
Duty ratio varies as throttle valve is opened
gradually.)
Throttle opening 0% = 0.78 ms ON duty
Throttle opening 100% = 6.24 ms ON duty
G03-15 — — —
G03-16 — — —
G03-17 Monitor output 10 – 14 V Ignition switch ON