Suzuki SY413 Service Manual page 2654

INSPECTION
STEP
1 Was "ENGINE DIAG. FLOW TABLE" performed?
2 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 sensor output volt-
age when throttle valve is at idle position and fully opened.
See Fig. 1 and 2.
Dose voltage vary within specified value linearly as shown in
figure?
3 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. 3.
Between 1 and 2: 2.5 – 6.0 kW
Between 1 and 3: 100 W – 20 kW, varying according to
Are measured values as specified?
Fig.1 for Step 2
ENGINE GENERAL INFORMATION AND DIAGNOSIS (G13/G16 ENGINE WITH WU TWC) 6-1-55
ACTION
throttle valve opening.
Fig.2 for Step 2
Closed
(condition "A")
YES
Go to Step 2.
If voltmeter was
used, check termi-
nal C21-16 for
poor connection.
If OK, substitute a
known-good ECM
(PCM) and re-
check.
High resistance in
"P", "Gr", "Or" or
"G/R" circuit.
If wire and con-
nection are OK,
substitute a
known-good ECM
(PCM) and re-
check.
Fig.3 for Step 3
Fully open
Throttle Opening
NO
Go to "ENGINE
DIAG. FLOW
TABLE".
Go to Step 3.
Replace TP sen-
sor.