2000 SUZUKI SWIFT idle

ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13) 6-1-35
CONNECTOR “C02”
TERMINAL
NO.CIRCUITNORMAL
VOLTAGECONDITION
1A / C ON output signal0 VIgnition switch ON
2EGR valve (stepper motor10 – 14 VIgnition switch ON2coil 1)0 – 1 VEngine running at idle speed
3Data link connector10 – 14 VIgnition switch ON
4Heater of HO2S-210 – 14 VIgnition switch ON
5Power source10 – 14 VIgnition switch ON
6Power source10 – 14 VIgnition switch ON
7Power source for buck-up10 – 14 VIgnition switch ON and OFF
8EGR valve (stepper motor10 – 14 VIgnition switch ON8coil 3)10 – 14 VEngine running at idle speed
9EGR valve (stepper motor10 – 14 VIgnition switch ON9coil 2)10 – 14 VEngine running at idle speed
10Main relay10 – 14 VIgnition switch OFF10Main relay0.4 – 1.5 VIgnition switch ON
112-range signal (A / T)10 – 14 VIgnition switch ON, Select lever at 2-range
12N-range signal (A / T)10 – 14 VIgnition switch ON, Select lever at N-range
13Heated oxygen sensor-2Refer to DTC P0130 diag. flow table
14D-range signal (A / T)10 – 14 VIgnition switch ON, Select lever at D-range
15R-range signal (A / T)10 – 14 VIgnition switch ON, Select lever at R-range
16A/C input signal
10 – 14 VIgnition switch ON
A / C switch OFF
16A/C in ut signal
0 – 2 VIgnition switch ON
A / C switch ON
17EGR valve (stepper motor10 – 14 VIgnition switch ON17coil 4)0 – 1 VEngine running at idle speed
18Radiator fan control relay
10 – 14 V
Ignition switch ON
Engine coolant temp.: Below 92.5C
(199F)
18Radiator fan control relay
0 – 1 V
Ignition switch ON
Engine coolant temp.: Below 97.5C
(208F) or higher
19Fuelpumprelay0 – 1 VFor 2 seconds after ignition switch ON19Fuel um relay10 – 14 VAfter the above time
20Blank——
21P-range signal (A / T)
Indication
deflection
repeated
0 V and
10 – 14 V
Ignition switch ON
22Fuel level sensor (gauge)
0 – 2 VIgnition switch ON
Fuel tank fully filled
22Fuel level sensor (gauge)
4.5 – 7.5 VIgnition switch ON
Fuel tank emptied
23L-range signal (A / T)10 – 14 VIgnition switch ON, Select lever at L-range
24Blank——

6-1-36 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
CONNECTOR “C03”
TERMINAL
NO.CIRCUITNORMAL
VOLTAGECONDITION
1Malfunction indicator lamp0 – 1 VIgnition switch ON1Malfunction indicator lamp10 – 14 VWhen engine running
2
Vehicle speed sensor (M / T)
Indicator
deflection
repeated
0 V and
4 – 6 V
Ignition switch ON
Front left tire turned slowly with front right
tire locked
Output shaft speed sensor
(+) (A / T)0.4 – 0.8 VIgnition switch ON
3Blank——
4Shift solenoidA(A / T)0 VIgnition switch ON, Select lever at P-range4Shift solenoid – A (A / T)10 – 14 VIgnition switch ON, Select lever at D-range
5Throttleposition sensor
0.2 – 1.0 VIgnition switch ON
Throttle valve at idle position
5Throttle position sensor
2.8 – 4.8 VIgnition switch ON
Throttle valve at full open position
6Ignition switch10 – 14 VIgnition switch ON
7Data link connector—Ignition switch ON
8Output shaft speed sensor
(–) (A / T)0.4 – 0.8 VIgnition switch ON
9Blank——
10Sensor ground——
11Shift solenoidB(A / T)0 VIgnition switch ON, Select lever at P-range11Shift solenoid – B (A / T)10 – 14 VIgnition switch ON, Select lever at D-range
12Blank——
13Blank——
14Blank——
15Blank——
16Tachometer (if equipped)0 – 1 VIgnition switch ON
17Engine start switch6 – 12 VWhile engine cranking17g
(Engine start signal)0 – 1 VOther than above

MAP
sensor
To other sensorsTo TP sensor
ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13) 6-1-43
DTC P0105 MANIFOLD ABSOLUTE PRESSURE (MAP) CIRCUIT
MALFUNCTION
CIRCUIT DESCRIPTION
DTC DETECTING CONDITIONPOSSIBLE CAUSE

MAP: 4.9 kpa, 37 mmHg or less
(Low pressure – High vacuums – Low voltage)

MAP: 114.7 kpa, 860 mmHg or more
(High pressure – Low vacuums – High voltage)
“G” circuit open

“P” circuit open or shorted to ground

“G” circuit open or shorted to ground

MAP sensor malfunction

ECM (PCM) malfunction
NOTE:
When DTC P0120 is indicated together, it is possible that “P” circuit is open.
DTC CONFIRMATION PROCEDURE
1) Clear DTC, start engine and keep it at idle for 1 min.
2) Select “DTC” mode on scan tool and check DTC.

6-1-46 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
IAT sensor
To other sensors
DTC P0110 INTAKE AIR TEMP. (IAT) CIRCUIT MALFUNCTION
CIRCUIT DESCRIPTION
DTC DETECTING CONDITIONPOSSIBLE CAUSE

Low intake air temperature (High voltage-High resistance)

High intake air temperature (Low voltage-Low resistance)
“Gr / R” circuit open or shorted to power

“G” circuit open

IAT sensor malfunction

ECM (PCM) malfunction
NOTE:

When DTC P0115 and P0120 are indicated together, it is possible that “G” circuit is open.

Before inspecting, be sure to check that ambient temperature is higher than –40C (–40F).
DTC CONFIRMATION PROCEDURE
1) Clear DTC, start engine and keep it at idle for 1 min.
2) Select “DTC” mode no scan tool and check DTC.

6-1-48 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
To combination
(ECT) meterTo other sensors
NOTE:
Before inspecting, be sure to check that cool-
ant temp. meter in combination meter indi-
cates normal operating temperature (Engine
is not overheating).
DTC P0115 ENGINE COOLANT TEMPERATURE (ECT) CIRCUIT
MALFUNCTION
CIRCUIT DESCRIPTION
DTC DETECTING CONDITIONPOSSIBLE CAUSE

Low engine coolant temperature (High voltage-High resistance)

High engine coolant temperature (Low voltage-Low resistance)
“Lg / R” circuit open or shorted to power

“G” circuit open

ECT sensor malfunction

ECM (PCM) malfunction
DTC CONFIRMATION PROCEDURE
1) Clear DTC, start engine and keep it at idle for 1 min.
2) Select “DTC” mode on scan tool and check DTC.

Throttle
position
sensorTo MAP sensor
To other sensors
6-1-50 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
DTC P0120 THROTTLE POSITION CIRCUIT MALFUNCTION
CIRCUIT DESCRIPTION
DTC DETECTING CONDITIONPOSSIBLE CAUSE

Signal voltage high

Signal voltage low
“G” circuit open

“Gr” circuit open or shorted to ground

“P” circuit open or shorted to power or ground

TP sensor malfunction

ECM (PCM) malfunction
NOTE:

When DTC P0105, P0110, P0115 and / or P0120 are / is indicated together, it is possible that “G” circuit is
open.

When DTC P0105 and / or P0120 are / is indicated together, it is possible that “P” circuit is open.
DTC CONFIRMATION PROCEDURE
1) Clear DTC, start engine and keep it at idle for 1 min.
2) Select “DTC” mode on scan tool and check DTC.

ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13) 6-1-51
Fig. 1 for Step 2 Fig. 2 for Step 3 Fig. 3 for Step 4
INSPECTION
STEPACTIONYESNO
1Was “ENGINE DIAG. FLOW TABLE”
performed?Go to Step 2.Go to “ENGINE DIAG.
FLOW TABLE”.
2Check 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?Go to Step 3.Intermittent trouble.
Check for intermittent
referring to “Intermittent
and Poor Connection” in
Section 0A.
3Check Wire Harness.
1) Disconnect connector from TP sensor
with ignition switch OFF.
2) Check for proper connection to TP sensor
at “P”, “Gr” and “G” wire terminal.
3) If OK, then with ignition switch ON, check
voltage at each of “P” and “Gr” wire
terminals. See Fig. 2.
Is voltage about 4 – 6 V at each terminal?Go to Step 4.“P” wire open, “P” wire
shorted to ground circuit or
power circuit or “G” wire,
“Gr” wire open or shorted
to ground circuit or poor
C01-22 or C03-5
connection.
If wire and connection are
OK, substitute a known-
good ECM (PCM) and
recheck.
4Check 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: 170 Ω – 15.5 kΩ
Are measured values within specifications?“G” wire open or poor
C01-10 connection.
If wire and connection are
OK, substitute a known-
good ECM (PCM) and
recheck.Replace TP sensor.

ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13) 6-1-53
Fig. 1 for Step 2 Fig. 2 for Step 2 Fig. 3 for Step 2
Fig. 4 for Step 3
Closed
(condition “A”)Fully open
Throttle Opening When using SUZUKI scan tool:
When not using SUZUKI scan tool:
INSPECTION
STEPACTIONYESNO
1Was “ENGINE DIAG. FLOW TABLE” performed?Go to Step 2.Go to “ENGINE
DIAG. FLOW
TABLE”.
2Check 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 C03-5 of ECM (PCM) 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?If voltmeter was
used, check
terminal C03-5 for
poor connection.
If OK, substitute a
known-good ECM
(PCM) and
recheck.Go to Step 3.
3Check 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: 170 Ω – 15.5 kΩ, varying according to
throttle valve opening.
Are measured values as specified?High resistance in
“P”, “Gr” or “G”
circuit.
If wire and
connection are
OK, substitute a
known-good ECM
(PCM) and
recheck.Replace TP
sensor.