Suzuki Ignis Service Manual page 438

6-64 ENGINE GENERAL INFORMATION AND DIAGNOSIS
INSPECTION
Step
1 Was "ENGINE DIAG. FLOW TABLE" per-
formed?
2 Is SUZUKI scan tool available?
3 Check TP Sensor and its Circuit.
1) Turn ignition switch OFF and connect
SUZUKI scan tool to DLC.
2) Turn ignition switch ON and check TP sen-
sor output voltage when throttle valve is at
idle position and fully opened. See Fig. 1
and 3.
Dose voltage vary within specified value linearly
as shown in figure?
4 Check TP Sensor and Its Circuit.
1) Turn ignition switch ON.
2) Check voltage at terminal C41-3 (For TYPE
A, See NOTE) or C42-16 (For TYPE B, See
NOTE) of ECM connector connected, when
throttle valve is at idle position and fully
opened. See Fig. 2 and 3.
Dose voltage vary within specified value linearly
as shown in figure?
5 Check TP Sensor.
1) Turn ignition switch OFF.
2) Disconnect TP sensor connector.
3) Check for proper connection to TP sensor
at each terminal.
4) If OK, then measure resistance between
terminals and check if each measured value
is as specified below.
See Fig. 4.
Between 1 and 2 : 4.0 – 6.0 kΩ
Between 1 and 3 : 0.02 – 6.0 kΩ, varying
according to throttle valve opening.
Are measured values as specified?
Fig. 1 for Step 3
[ A ]
Action
[A] : When using SUZUKI scan tool:
Yes
Go to Step 2.
Go to Step 3.
If voltmeter was used,
check terminal C41-3 (For
TYPE A, See NOTE) or
C42-16 (For TYPE B, See
NOTE) for poor connec-
tion.
If OK, substitute a known-
good ECM and recheck.
If voltmeter was used,
check terminal C41-3 (For
TYPE A, See NOTE) or
C42-16 (For TYPE B, See
NOTE) for poor connec-
tion.
If OK, substitute a known-
good ECM and recheck.
High resistance in "GRY/
RED", "GRY/BLU" or
"ORN" circuit.
If wire and connection are
OK, substitute a known-
good ECM and recheck.
No
Go to "ENGINE DIAG.
FLOW TABLE".
Go to Step 4.
Go to Step 5.
Go to Step 5.
Replace TP sensor.