Suzuki Liana RH418 Supplementary Service Manual page 104

1A-91 Engine General Information and Diagnosis:
Step
10 Check PNP signal ("D" range signal)
1) Connect SUZUKI scan tool to DLC with ignition switch
OFF.
2) Turn ignition switch ON and check PNP signal ("P/N"
and "D" range) on display when shifting selector lever to
each range.
PNP signal
"P" and "N" range: P/N range
"R", "D", "2" and "L" range: D range
Is check result satisfactory?
11 Check PNP signal ("D" range signal)
1) Turn ignition switch ON.
2) Check voltage at terminal "G03-6" of ECM connector
connected.
PNP signal
"P" and "N" range: 10 – 14 V
"R", "D", "2" and "L" range: 0 – 1 V
Is check result satisfactory?
12 1) Check IAC system referring to Step 3 or Step 4 of "Idle
Air Control Circuit Check".
Is check result satisfactory?
13 Was IAC duty more than about 30% (or less than 70% for
OFF duty meter) in Step 1?
Action
I2RH0B110076-01
Yes
Go to Step 12.
Go to Step 12.
Go to Step 13.
Check parts or system
which can cause engine
low idle. (Accessory
engine load, Clog of air
passage, etc.)
No
Repair or replace.
Repair or replace.
Go to Step 4 of "Idle Air
Control Circuit Check".
Substitute a known-
good ECM and recheck.