Suzuki WagonR+ RB310 Service Manual page 2411

6-52 ENGINE DIAGNOSIS
INSPECTION
STEP
1 Was "ENGINE DIAG. FLOW TABLE"
performed?
2 Check TP Sensor and Its Circuit.
1) Connect scan tool to DLC with ignition
switch OFF and then turn ignition switch
ON.
2) Check throttle valve opening percentage
displayed on scan tool. See Fig. 1.
Is it displayed 2% or less?
3) Check throttle valve opening percentage
displayed on scan tool while opening
throttle valve from idle position to full open
position. See Fig. 1.
Is it displayed 96% or higher?
3 Check Wire Harness.
1) Disconnect connector from TP sensor
with ignition switch OFF.
2) Check for proper connection to TP sensor
at "W/G", "Gr" and "Br/W" wire terminal.
3) If OK, then with ignition switch ON, check
voltage at each of "W/G" and "Gr" wire
terminals. See Fig. 2.
Is voltage about 4 – 6 V at each terminal?
4 Check TP Sensor.
1) Check resistance between terminals of
TP sensor. See Fig. 3.
Between 1 and 2: 2.5 – 6.0 kΩ
Between 1 and 3: 100 Ω – 20 kΩ
Are measured values within specifications?
Fig. 1 for Step 2
ACTION
Fig. 2 for Step 3
YES
Go to Step 2.
Go to Step 3.
Go to Step 4.
"Br/W" wire open or poor
E21-10 connection.
If wire and connection are
OK, substitute a known-
good ECM and recheck.
Fig. 3 for Step 4
NO
Go to "ENGINE DIAG.
FLOW TABLE".
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection" in
Section 0 A.
"W/G" wire open, "W/G"
wire shorted to ground
circuit or power circuit or
"Br/W" wire, "Gr" wire
open or shorted to ground
circuit or poor E21-22 or
E23-5 connection.
If wire and connection are
OK, substitute a known-
good ECM and recheck.
Replace TP sensor.