2000 SUZUKI SWIFT cmp

0A-22 GENERAL INFORMATION
A
ABS : Anti-Lock Brake System
ATDC : After Top Dead Center
API : American Petroleum Institute
ATF : Automatic Transmission Fluid
ALR : Automatic Locking Retractor
AC : Alternating Current
A / T : Automatic Transmission
A / C : Air Conditioning
ABDC : After Bottom Dead Center
A / F : Air Fuel Mixture Ratio
A-ELR : Automatic-Emergency Locking
Retractor
B
B+ : Battery Positive Voltage
BTDC : Before Top Dead Center
BBDC : Before Bottom Dead Center
C
CKT : Circuit
CMP Sensor : Camshaft Position Sensor
(Crank Angle Sensor, CAS)
CO : Carbon Monoxide
CPP Switch : Clutch Pedal Position Switch
(Clutch Switch, Clutch Start
Switch)
CPU : Central Processing Unit
CRS : Child Restraint System
D
DC : Direct Current
DLC : Data Link Connector (Assembly
Line Diag. Link, ALDL, Serial
Data Link, SDL)
DOHC : Double Over Head Camshaft
DOJ : Double Offset Joint
DRL : Daytime Running Light
DTC : Diagnostic Trouble Code
(Diagnostic Code)
E
EBCM : Electronic Brake Control
Module, ABS Control Module
ECM : Engine Control Module
ECT Sensor : Engine Coolant Temperature
Sensor (Water Temp. Sensor,
WTS)
EGR : Exhaust Gas Recirculation
EGRT Sensor : EGR Temperature Sensor
(Recirculated Exhaust
Gas Temp. Sensor, REGTS)
EFE Heater : Early Fuel Evaporation Heater
(Positive Temperature
Coefficient, PTC Heater)
ELR : Emergency Locking Retractor
EPS : Electronic Power Steering
EVAP : Evaporative Emission
EVAP Canister : Evaporative Emission Canister
(Charcoal Canister)
F
4WD : 4 Wheel Drive
G
GEN : Generator
GND : Ground
H
HC : Hydrocarbons
HO2S : Heated Oxygen Sensor
I
IAC Valve : Idle Air Control Valve (Idle
Speed Control Solenoid Valve,
ISC Solenoid Valve)
IAT Sensor : Intake Air Temperature Sensor
(Air temperature Sensor, ATS)
ICM : Immobilizer Control Module
IG : Ignition
ISC Actuator : Idle Speed Control Actuator
(Motor)
ABBREVIATIONS AND SYMBOLS MAY BE USED IN THIS MANUAL
ABBREVIATIONS

Diagnostic Trouble Code Clearance 6-14. . . . .
Diagnostic Trouble Code Table 6-15. . . . . . . . .
Fail-safe Table 6-18. . . . . . . . . . . . . . . . . . . . . . .
Visual Inspection 6-19. . . . . . . . . . . . . . . . . . . . .
Engine Basic Inspection 6-20. . . . . . . . . . . . . . .
Engine Diagnosis Table 6-22. . . . . . . . . . . . . . .
Scan Tool Data 6-29. . . . . . . . . . . . . . . . . . . . . . .
Scan Tool Data Definitions 6-31. . . . . . . . . . . . .
Inspection of ECM (PCM) and Its Circuits 6-33
Voltage Check 6-33. . . . . . . . . . . . . . . . . . . . .
Resistance Check 6-37. . . . . . . . . . . . . . . . . .
Component Location 6-38. . . . . . . . . . . . . . . . . .
Table A-1 MIL Circuit Check
(Lamp does not come on) 6-39. . . . . . . . . . . .
Table A-2 MIL Circuit Check
(Lamp remains ON) 6-40. . . . . . . . . . . . . . . . . .
Table A-3 ECM (PCM) Power and Ground
Circuit Check 6-42. . . . . . . . . . . . . . . . . . . . . . .
DTC P0105 MAP Circuit Malfunction 6-44. . . .
DTC P0110 IAT Circuit Malfunction 6-46. . . . .
DTC P0115 ECT Circuit Malfunction 6-48. . . .
DTC P0120 Throttle Position Circuit
Malfunction 6-50. . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0121 Throttle Position Circuit
Range / Performance Problem 6-52. . . . . . . . .
DTC P0130 HO2S Circuit Malfunction
(Sensor-1) 6-54. . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0133 HO2S Circuit Slow
Response (Sensor-1) 6-56. . . . . . . . . . . . . . . .
DTC P0135 HO2S Heater Circuit
Malfunction (Sensor-1) 6-57. . . . . . . . . . . . . . .
DTC P0136 HO2S Circuit Malfunction
(Sensor-2) 6-59. . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0141 HO2S Heater Circuit
Malfunction (Sensor-2) 6-62. . . . . . . . . . . . . . .
DTC P0171 Fuel System Too Lean 6-64. . . . .
DTC P0172 Fuel System Too Rich 6-64. . . . . .
DTC P0300 Random Misfire Detected 6-68. . .
DTC P0301 Cylinder 1 Misfire Detected 6-68. DTC P0302 Cylinder 2 Misfire Detected 6- 68.
DTC P0303 Cylinder 3 Misfire Detected 6- 68.
DTC P0335 CKP Sensor Circuit
Malfunction 6- 72. . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0340 CMP Sensor Circuit
Malfunction 6- 74. . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0420 Catalyst System Efficiency
Below Threshold 6- 76. . . . . . . . . . . . . . . . . . . .
DTC P0443 Purge Control Valve Circuit
Malfunction 6- 79. . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0480 Radiator Fan Control
System Malfunction 6- 80. . . . . . . . . . . . . . . . . .
DTC P0500 Vehicle Speed Sensor
Malfunction (M / T) 6- 82. . . . . . . . . . . . . . . . . . .
DTC P0500 Vehicle Speed Sensor
Malfunction (A / T) 6- 84. . . . . . . . . . . . . . . . . . .
DTC P0505 Idle Control System
Malfunction 6- 86. . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0510 Closed Throttle Position
Switch Malfunction 6- 88. . . . . . . . . . . . . . . . . .
DTC P0601 Internal Control Module
Memory Check Sum Error 6- 89. . . . . . . . . . . .
DTC P1250 EFE Heater Circuit
Malfunction 6- 90. . . . . . . . . . . . . . . . . . . . . . . . .
DTC P1450 Barometric Pressure
Sensor Low / High Input 6- 92. . . . . . . . . . . . . .
DTC P1451 Barometric Pressure Sensor
Performance Problem 6- 92. . . . . . . . . . . . . . . .
DTC P1500 Engine Starter Signal
Circuit Malfunction 6- 93. . . . . . . . . . . . . . . . . . .
DTC P1510 ECM (PCM) Back-up Power
Supply Malfunction 6- 94. . . . . . . . . . . . . . . . . .
Table B-1 Fuel Injector Circuit Check 6- 96. . . .
Table B-2 Fuel Pump and Its Circuit
Check 6- 98. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table B-3 Fuel Pressure Check 6-100. . . . . . . . .
Table B-4 A / C Signal Circuits Check 6-102. . . .
Table B-5 Power Steering Pressure
Switch Signal Circuit Check 6-103. . . . . . . . . . .
SPECIAL TOOL6-104 . . . . . . . . . . . . . . . . . . . . . . .
6-2 ENGINE GENERAL INFORMATION AND DIAGNOSIS (TBI FOR G10)

ENGINE GENERAL INFORMATION AND DIAGNOSIS (TBI FOR G10) 6-39
INFORMATION SENSORS
-1. MAP sensor
-2. TP sensor
-3. IAT sensor
-4. ECT sensor
-5. Heated oxygen sensor-1
-6. VSS
-7. Ignition coil
-8. Battery
-9. CMP sensor (in Distributor)
-10. A/C contoller (if equipped)
-11. CKP sensor
-12. CTP switch (in ISC actuator)
-13. Heated oxygen sensor-2OTHERS
A: ECM (PCM)
B: Main relay
C: EVAP canister
D: Injector resistor
E: EFE heater
F: Electric load diode CONTROL DEVICES
a: Fuel injector
b: EVAP canister purge valve
c: Fuel pump relay
d: Malfunction indicator lamp
e: ISC actuator
f: Radiator fan control relay
g: Igniter
h: EFE heater relay
i: ISC actuator relay
COMPONENT LOCATION

Display of fuel injection signal using oscilloscope
1. CMP sensor signal
2. Fuel injector signal
3. Fuel injection time
2V/Div.
20V/Div.1
2
10ms/Div
Waveforms at specified idle speed 3 Sensor rotor
in distributorCamshaft
position sensor
6-74 ENGINE GENERAL INFORMATION AND DIAGNOSIS (TBI FOR G10)
DTC P0340 CAMSHAFT POSITION (CMP) SENSOR CIRCUIT MALFUNCTION
CIRCUIT DESCRIPTION
DTC DETECTING CONDITIONPOSSIBLE CAUSE

No CMP sensor signal for 2 seconds at engine
cranking (CKP sensor signal is inputted).
CMP sensor circuit open or short.

Signal rotor teeth damaged.

CMP sensor malfunction, foreign material being
attached or improper installation.

ECM (PCM) malfunction.
Reference
Connect oscilloscope between terminals C01-2 and C01-10 of ECM (PCM) connector connected to ECM (PCM)
and check CMP sensor signal.
DTC CONFIRMATION PROCEDURE
1) Clear DTC.
2) Start engine and keep it at idle for 1 min.
3) Select “DTC” mode on scan tool and check DTC.

ENGINE GENERAL INFORMATION AND DIAGNOSIS (TBI FOR G10) 6-75
Fig. 1 for Step 3 Fig. 2 for Step 5
“a”: Air gap
INSPECTION
STEPACTIONYESNO
1Was “ENGINE DIAG. FLOW TABLE” performed?Go to Step 2.Go to “ENGINE DIAG.
FLOW TABLE”.
2Is DTC P1500 (Engine starter signal circuit
malfunction) detected?Go to DTC P1500
Diag. Flow Table.Go to Step 3.
3Check CMP Sensor for Resistance.
1) Measure resistance of CMP sensor by referring to
“CMP SENSOR (PICK UP COIL) RESISTANCE”
in SECTION 6F.
Is resistance within specified value?Go to Step 4.Faulty CMP sensor.
4Check Wire Harness.
1) With ignition switch at OFF position, disconnect
ECM (PCM) electrical connectors.
2) Measure resistance from terminal “C01-2” to
“C01-10” of ECM (PCM) connector. See Fig. 1.
Is resistance within 185 – 275 Ω at 20C (68F)?Go to Step 5.“W” or “Or” wire open
or short.
Poor connection of
CMP sensor
connector terminal.
5Check Air Gap Between Rotor Tooth and Sensor. See
Fig. 2.
1) Remove Distributor cap.
2) Visually inspect CMP sensor signal rotor for
damage.
3) Measure air gap by referring “SIGNAL ROTOR
AIR GAP” in Section 6F.
Was any damage found?Faulty CMP sensor
signal rotor.Poor connection of
ECM (PCM)
connector terminal.
If OK, substitute a
known-good ECM
(PCM) and recheck
CMP.

6-1-2 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
DTC P0300 Random Misfire
Detected 6-1- 69. . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0301 Cylinder 1 Misfire
Detected 6-1- 69. . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0302 Cylinder 2 Misfire
Detected 6-1- 69. . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0303 Cylinder 3 Misfire
Detected 6-1- 69. . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0304 Cylinder 4 Misfire
Detected 6-1- 69. . . . . . . . . . . . . . . . . . . . . . . . . .
DTC P0335 CKP Sensor Circuit
Malfunction 6-1- 73. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0340 CMP Sensor Circuit
Malfunction 6-1- 75. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0400 EGR Flow Malfunction 6-1- 78. . . .
DTC P0420 Catalyst System
Efficiency Below Threshold 6-1- 81. . . . . . . . . .
DTC P0443 Purge Control Valve Circuit
Malfunction 6-1- 84. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0480 Radiator Fan Control
System Malfunction 6-1- 85. . . . . . . . . . . . . . . . .
DTC P0500 Vehicle Speed Sensor
Malfunction 6-1- 87. . . . . . . . . . . . . . . . . . . . . . . .
DTC P0505 Idle Control System
Malfunction 6-1- 91. . . . . . . . . . . . . . . . . . . . . . . . DTC P0601 Internal Control Module
Memory Check Sum Error 6-1- 93. . . . . . . . . . .
DTC P1450 Barometric Pressure
Sensor Low / High Input 6-1- 94. . . . . . . . . . . . .
DTC P1451 Barometric Pressure Sensor
Performance Problem 6-1- 94. . . . . . . . . . . . . . .
DTC P1500 Engine Starter Signal
Circuit Malfunction 6-1- 96. . . . . . . . . . . . . . . . . .
DTC P1510 ECM (PCM) Back-up
Power Supply Malfunction 6-1- 97. . . . . . . . . . .
Table B-1 Fuel Injector Circuit Check 6-1- 98. . .
Table B-2 Fuel Pump and Its Circuit
Check 6-1- 99. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table B-3 Fuel Pressure Check 6-1-101. . . . . . . .
Table B-4 A / C Signal Circuits Check 6-1-103. . .
Table B-5 PSP Switch Signal Circuit
Check 6-1-104. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table B-6 Electric Load Signal Circuit
Check 6-1-105. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Table B-7 Radiator Cooling Fan Control
System Check 6-1-106. . . . . . . . . . . . . . . . . . . . .
SPECIAL TOOLS6-1-108 . . . . . . . . . . . . . . . . . . . . .

INFORMATION SENSORS
-1. MAP sensor
-2. TP sensor
-3. IAT sensor
-4. ECT sensor
-5. Heated oxygen sensor-1
5-1. Heated oxygen sensor-2
-6. VSS (A / T)
-7. Transmission range switch (A / T)
-8. Battery
-9. CMP sensor
-10. CKP sensor
-11. Fuel level sensor (gauge) (in fuel tank)
-12. PSP switch
-13. A / C control module (if equipped)
-14. VSS (speedometer) (M / T)OTHERS
A: ECM (PCM)
B: Main relay
C: EVAP canister
D: Data link connector CONTROL DEVICES
a: Fuel injector
b: EVAP canister purge valve
c: Fuel pump relay
d: EGR valve (step motor)
e: Malfunction indicator lamp
f: Ignition coil assembly
g: Radiator fan control relay
h: IAC valve
6-1-38 ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13)
COMPONENT LOCATION

ENGINE GENERAL INFORMATION AND DIAGNOSIS (SFI FOR G13) 6-1-69
Ignition coil assembly
for No.1 & No.4 spark plugs
Ignition coil assembly
for No.2 & No.3 spark plugs
Ignition switch
Main relay
Main
fuseRelay box
To ignition switch
CKP sensorCMP sensorNo.1 injector
No.2 injector
No.3 injector
No.4 injector Fuse box
DTC P0300 RANDOM MISFIRE DETECTED (Misfire detected at 2 or more
cylinders)
DTC P0301 CYLINDER 1 MISFIRE DETECTED
DTC P0302 CYLINDER 2 MISFIRE DETECTED
DTC P0303 CYLINDER 3 MISFIRE DETECTED
DTC P0304 CYLINDER 4 MISFIRE DETECTED
CIRCUIT DESCRIPTION
ECM (PCM) monitors crankshaft revolution speed and engine speed via the crankshaft position sensor and cylin-
der No. via the camshaft position sensor. Then it calculates the change in the crankshaft revolution speed and from
how many times such change occurred in every 200 or 1000 engine revolutions, it detects occurrence of misfire.
When ECM (PCM) detects a misfire (misfire rate per 200 revolutions) which can cause overheat and damage to
the three way catalytic converter, it makes the malfunction indicator lamp (MIL) flash as long as misfire occurs at
that rate.
After that, however, when the misfire rate drops, MIL remains ON until it has been judged as normal 3 times under
the same driving conditions.
Also, when ECM (PCM) detects a misfire (misfire rate per 1000 revolutions) which will not cause damage to three
way catalytic converter but can cause exhaust emission to be deteriorated, it makes MIL light according to the 2
driving cycle detection logic.