Suzuki WagonR+ RB310 Service Manual page 2414

INSPECTION
STEP
1 Was "ENGINE DIAG. FLOW TABLE" performed?
2 Check TP Sensor and Its Circuit.
When using SUZUKI scan tool:
1) Turn ignition switch OFF and connect SUZUKI scan tool to
DLC.
2) Turn ignition switch ON and check TP sensor output
voltage when throttle valve is at idle position and fully
opened. See Fig. 1 and 3.
When not using SUZUKI scan tool:
1) Turn ignition switch ON.
2) Check voltage at terminal E23-5 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?
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. 4.
Between 1 and 2: 2.5 – 6.0 kΩ
Between 1 and 3: 100 Ω – 20 kΩ, varying according to
Are measured values as specified?
Fig. 1 for Step 2
When using SUZUKI scan tool:
Fig. 4 for Step 3
ACTION
throttle valve opening.
Fig. 2 for Step 2
When not using SUZUKI scan tool:
YES
Go to Step 2.
If voltmeter was
used, check
terminal E23-5 for
poor connection.
If OK, substitute a
known-good ECM
and recheck.
High resistance in
"W/G", "Gr" or
"Br/W" circuit.
If wire and
connection are
OK, substitute a
known-good ECM
and recheck.
Fig. 3 for Step 2
E23-5
ENGINE DIAGNOSIS 6-55
NO
Go to "ENGINE
DIAG. FLOW
TABLE".
Go to Step 3.
Replace TP
sensor.
Closed
Fully open
(condition "A")
Throttle Opening