Cmp sensor SUZUKI JIMNY 2005 3.G Service Workshop Manual

Downloaded from www.Manualslib.com manuals search engine GENERAL INFORMATION 0A-21
Abbreviations May Be Used In This Manual
Abbreviations
AABC
ATDC
API
ATF
ALR
AC
A/T
A/C
ABDC
A/F
A-ELRAnti-lock Brake System
After Top Dead Center
American Petroleum Institute
Automatic Transmission Fluid
Automatic Locking Retractor
Alternating Current
Automatic Transmission
Air Conditioning
After Bottom Dead Center
Air Fuel Mixture Ratio
Automatic-Emergency
Locking RetractorEEBCM
ECM
ECT Sensor
EGR
EGRT Sensor
EFE Heater
ELR
EPS
EVAP
EVAP CanisterElectronic Brake Control Module,
ABS Control Module
Engine Control Module
Engine Coolant Temperature
Sensor (Water Temp. Sensor,
WTS)
Exhaust Gas Recirculation
EGR Temperature Sensor
(Recirculated Exhaust Gas Temp.
Sensor, REGTS)
Early Fuel Evaporation
Heater (Positive Temperature
Coefficient, PTC Heater)
Emergency Locking Retractor
Electronic Power Steering
Evaporative Emission
Evaporative Emission Canister
(Charcoal Canister) BB+
BTDC
BBDCBattery Positive Voltage
Before Top Dead Center
Before Bottom Dead Center
CCKT
CMP Sensor
CO
CPP Switch
CPU
CRSCircuit
Camshaft Position Sensor
(Crank Angle Sensor, CAS)
Carbon Monoxide
Clutch Pedal Position Switch
(Clutch Switch, Clutch Start
Switch)
Central Processing Unit
Child Restraint SystemF 4WD 4 Wheel Drive
GGEN
GNDGenerator
Ground
HHC
HO2SHydrocarbons
Heated Oxygen Sensor
DDC
DLC
DOHC
DOJ
DRL
DTCDirect Current
Data Link Connector
(Assembly Line Diag. Link, ALDL,
Serial Data Link, SDL)
Double Over Head Camshaft
Double Offset Joint
Daytime Running Light
Diagnostic Trouble Code
(Diagnostic Code)IIAC Valve
IAT Sensor
ICM
IG
ISC ActuatorIdle Air Control Valve (Idle Speed
Control Solenoid Valve, ISC
Solenoid Valve)
Intake Air Temperature Sensor
(Air temperature Sensor, ATS)
Immobilizer Control Module
Ignition
Idle Speed Control Actuator
(Motor)

Downloaded from www.Manualslib.com manuals search engine 6-2 ENGINE GENERAL INFORMATION AND DIAGNOSIS
Diagnostic trouble code (DTC) table ......... 6-16
Fail-safe table............................................ 6-19
Visual inspection ....................................... 6-20
Engine basic inspection ............................ 6-21
Engine diagnosis table .............................. 6-23
Scan Tool Data ............................................. 6-28
Scan tool data definitions .......................... 6-30
Inspection of ECM and Its Circuits ................ 6-33
Component Location ..................................... 6-42
Table A-1 Malfunction Indicator Lamp Circuit
Check - Lamp Does Not Come “ON” at Ignition
Switch ON (But Engine at Stop).................... 6-43
Table A-2 Malfunction Indicator Lamp Circuit
Check - Lamp Remains “ON” after Engine
Starts............................................................. 6-44
Table A-3 Malfunction Indicator Lamp Circuit
Check - Mil Flashes at Ignition Switch ON .... 6-45
Table A-4 Malfunction Indicator Lamp Circuit
Check - MIL Does Not Flash, Just Remains
ON or Just Remains OFF Even with Grounding
Diagnosis Switch Terminal............................ 6-45
Table A-5 ECM Power and Ground Circuit
Check - MIL Doesn’t Light at Ignition Switch
ON and Engine Doesn’t Start Though It Is
Cranked Up ................................................... 6-46
DTC P0105 (DTC No.11) Manifold Absolute
Pressure (MAP) Circuit Malfunction .............. 6-48
DTC P0110 (DTC No.18) Intake Air Temp.
(IAT) Circuit Malfunction ............................... 6-51
DTC P0115 (DTC No.19) Engine Coolant
Temperature (ECT) Circuit Malfunction ........ 6-53
DTC P0120 (DTC No.13) Throttle Position
Circuit Malfunction ........................................ 6-55
DTC P0121 Throttle Position Circuit Range /
Performance Problem ................................... 6-57
DTC P0130 (DTC No.14) Heated Oxygen
Sensor (HO2S) Circuit Malfunction
(Sensor-1) ..................................................... 6-59
DTC P0133 Heated Oxygen Sensor (HO2S)
Circuit Slow Response (Sensor-1) ................ 6-61
DTC P0135 (DTC No.14) Heated Oxygen
Sensor (HO2S) Heater Circuit Malfunction
(Sensor-1) ..................................................... 6-62
DTC P0136 Heated Oxygen Sensor (HO2S)
Circuit Malfunction (Sensor-2) ...................... 6-64
DTC P0141 Heated Oxygen Sensor (HO2S)
Heater Circuit Malfunction (Sensor-2)........... 6-66
DTC P0171 Fuel System Too Lean .............. 6-68
DTC P0172 Fuel System Too Rich ............... 6-68
DTC P0300 Random Misfire Detected
(Misfire Detected at 2 or More Cylinders) ..... 6-72DTC P0301 Cylinder 1 Misfire Detected ........ 6-72
DTC P0302 Cylinder 2 Misfire Detected ........ 6-72
DTC P0303 Cylinder 3 Misfire Detected ........ 6-72
DTC P0304 Cylinder 4 Misfire Detected ........ 6-72
DTC P0325 (DTC No.17) Knock Sensor Circuit
Malfunction .................................................... 6-77
DTC P0335 (DTC No.23) Crankshaft Position
(CKP) Sensor Circuit Malfunction .................. 6-79
DTC P0340 (DTC No.15) Camshaft Position
(CMP) Sensor Circuit Malfunction ................. 6-82
DTC P0400 Exhaust Gas Recirculation Flow
Malfunction .................................................... 6-85
DTC P0420 Catalyst System Efficiency below
Threshold ....................................................... 6-88
DTC P0443 Purge Control Valve Circuit
Malfunction .................................................... 6-91
DTC P0481 A/C Condenser Fan Control
Circuit Malfunction ......................................... 6-92
DTC P0500 (DTC No.16) Vehicle Speed
Sensor (VSS) Malfunction ............................. 6-94
DTC P0505 Idle Control System
Malfunction .................................................... 6-96
DTC P0601 Internal Control Module Memory
Check Sum Error (DTC No.71) ...................... 6-98
DTC P1450 Barometric Pressure Sensor
Low / High Input ............................................. 6-99
DTC P1451 Barometric Pressure Sensor
Performance Problem .................................... 6-99
DTC P1500 Engine Starter Signal Circuit
Malfunction .................................................. 6-101
DTC P1510 ECM Back-up Power Supply
Malfunction .................................................. 6-103
DTC P1570 (DTC No.21) ABS Signal Circuit
Malfunction .................................................. 6-104
DTC P1600 Serial Communication Problem
Between ECM and TCM .............................. 6-105
DTC P1717 A/T Drive Range (Park / Neutral
Position) Signal Circuit Malfunction ............. 6-107
Table B-1 Fuel Injector Circuit Check ..........6-109
Table B-2 Fuel Pump and Its Circuit
Check........................................................... 6-110
Table B-3 Fuel Pressure Check................... 6-112
Table B-4 Idle Air Control System Check ....6-114
Table B-5 A/C Signal Circuits Check
(Vehicle with A/C) ........................................ 6-117
Table B-6 Electric Load Signal Circuit
Check........................................................... 6-119
TAble B-7 A/C Condenser Fan Control
System Check.............................................. 6-121
Special Tool ................................................... 6-123

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On-Board Diagnostic System (Vehicle without
Immobilizer Indicator Lamp)
ECM diagnosis troubles which may occur in the area including
the following parts when the ignition switch is ON and the engine
is running, and indicates the result by turning on or flashing mal-
function indicator lamp (1).
Heated oxygen sensor (if equipped)
ECT sensor
TP sensor
IAT sensor
MAP sensor
CMP sensor
CKP sensor
Knock sensor
VSS
CPU (Central Processing Unit) of ECM
ECM and malfunction indicator lamp (1) operate as follows.
Malfunction indicator lamp (1) lights when the ignition switch
is turned ON (but the engine at stop) with the diagnosis
switch terminal ungrounded regardless of the condition of
Engine and Emission Control system. This is only to check
the malfunction indicator lamp (1) bulb and its circuit.
If the above areas of Engine and Emission Control system is
free from any trouble after the engine start (while engine is
running), malfunction indicator lamp (1) turns OFF.
When ECM detects a trouble which has occurred in the
above areas, it makes malfunction indicator lamp (1) turn ON
while the engine is running to warn the driver of such occur-
rence of trouble and at the same time it stores the trouble
area in ECM back-up memory. (The memory is kept as it is
even if the trouble was only temporary and disappeared
immediately. And it is not erased unless the power to ECM is
shut off for specified time below.)
ECM also indicates trouble area in memory by means of
flashing of malfunction indicator lamp (1) at the time of
inspection. (i.e. when connecting diagnosis switch terminal
(2) and ground terminal (4) of monitor connector (3) with a
service wire (5) and ignition switch is turned ON.)
NOTE:
When a trouble occurs in the above areas and disap-
pears soon while the diagnosis switch terminal is
ungrounded and the engine is running, malfunction
indicator lamp (1) lights and remains ON as long as the
trouble exists but it turns OFF when the normal condi-
tion is restored.
Time required to erase diagnostic trouble code mem-
ory thoroughly varies depending on ambient tempera-
ture as follows.

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[D] Fig. 4 for Step 7 or 8 / [E] Fig. 5 for Step 10 / [F] Fig. 6 for Step 13
Engine diagnosis table
Perform troubleshooting referring to following table when ECM has no DTC and no abnormality found in visual
inspection and engine basic inspection previously.
Condition Possible Cause Reference Item
Hard Starting
(Engine cranks OK)Faulty ignition coil Ignition coil assembly in Section 6F.
Faulty CMP sensing rotor or CKP sensing
rotorCMP sensing rotor or CKP sensing
rotor inspection in Section 6E.
Faulty idle air control system Diagnostic Flow Table B-4
Faulty ECT sensor, TP sensor, CKP sen-
sor, CMP sensor or MAP sensorECT sensor, TP sensor, CKP sensor,
CMP sensor or MAP sensor in Sec-
tion 6E.
Fuel pressure out of specification Diagnostic Flow Table B-3
Faulty fuel injector Diagnostic Flow Table B-1
Faulty ECM Inspection of ECM and its circuit in
this section.
Malfunctioning PCV system PCV system in Section 6E.
Low compression Compression check in Section 6A1.
Improper valve lash Valve lash in Section 6A1.
Improper valve timing Timing chain and chain tensioner in
Section 6A1.
Compression leak from valve seat Valves and cylinder head in Section
6A1.
Sticky valve stem Valves and cylinder head in Section
6A1.
Weak or damaged valve springs Valves and cylinder head in Section
6A1.
Compression leak at cylinder head gasket Valves and cylinder head in Section
6A1.
Sticking or damaged piston ring Pistons, piston rings, connecting rods
and cylinders in Section 6A1.
Worn piston, ring or cylinder Pistons, piston rings, connecting rods
and cylinders in Section 6A1.

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Component Location
NOTE:
The figure shows left-hand steering vehicle.
For right-hand steering vehicle, parts with (*) are installed at the other side.
1. IAT sensor a : Immobilizer indicator lamp (if equipped) A : ECM
2. TP sensor b : A/C condenser fan motor relay (if equipped) B : A/T control module
3. Monitor connector c : Main relay C : EVAP canister
4. CO adjusting resistor (if equipped) d : Fuel pump relay D : DLC
5. CKP sensor e : IAC valve E : ABS control module (if equipped)
6. MAP sensor f : EVAP canister purge valve
7. CMP sensor g : EGR valve (if equipped)
8. Transmission range switch h : Fuel injector
9. VSS i : Ignition coil assemblies
10. HO2S-1 (if equipped) j : MIL
11. HO2S-2 (if equipped)
12. ECT sensor
13. Knock sensor

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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 monitors crankshaft revolution speed and engine speed via the crankshaft position sensor and cylinder 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 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 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 driv-
ing cycle detection logic.
1. Ignition coil assembly (for No.1 and No.4 cylinder)
2. Ignition coil assembly (for No.2 and No.3 cylinder)
3. Fuel injector
4. CKP sensor
5. CMP sensor

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DTC P0340 (DTC No.15) Camshaft Position (CMP) Sensor Circuit Malfunction
CIRCUIT DESCRIPTION
REFERENCE
Connect oscilloscope between terminals E19-11 of ECM connector connected to ECM and body ground 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.
DTC DETECTING CONDITION POSSIBLE CAUSE
The number of CMP sensor signal pulses is incor-
rect during 8 revolution of crankshaft.CMP sensor circuit open or short.
Signal rotor teeth damaged.
CMP sensor malfunction, foreign material being
attached or improper installation.
ECM malfunction.
CMP sensor phase lag.
1. No.1 cylinder 3. No.3 cylinder [A] : Oscilloscope Waveforms [C] : CKP sensor waveform
2. No.2 cylinder 4. No.4 cylinder [B] : Waveforms at specified idle speed [D] : CMP sensor waveform

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INSPECTION
Step Action Yes No
1Was “Engine Diag. Flow Table” performed? Go to Step 2. Go to “Engine Diag.
Flow Table”.
2 Check CMP Sensor and connector for proper installa-
tion.
Is CMP sensor installed properly and connector con-
nected securely?Go to Step 3. Correct.
3 Check Wire Harness and Connection.
1) Disconnect connector from CMP sensor.
2) Check for proper connection to CMP sensor at
each terminal.
3) If OK, turn ignition switch ON and check for volt-
age at each terminal of sensor connector discon-
nected. See Fig. 1.
Terminal “B+” : 10 – 14 V
Terminal “Vout” : 4 – 5 V
Terminal “GND” : 0 V
Is check result satisfactory?Go to Step 5. Go to Step 4.
4 Was terminal “Vout” voltage out of specification in
Step 3 check?“W” wire open, short or
poor connection.
If wire and connection
are OK, substitute a
known-good ECM and
recheck.“Bl/B” or “B/R” wire
open, short or poor
connection.
5 Check Ground Circuit for Open.
1) Turn ignition switch OFF.
2) Check for continuity between “GND” terminal of
CMP sensor connector and engine ground.
Is continuity indicated?Go to Step 6.“B/R” wire open or
poor ground connec-
tion.
6 Check CMP Sensor for Operation.
1) Remove CMP sensor from sensor case.
2) Remove metal particles on end face of CMP sen-
sor, if any.
3) Connect each connector to ECM and CMP sensor.
4) Turn ignition switch ON.
5) Check for voltage at terminal E19-11 of connector
connected to ECM by passing magnetic sub-
stance (iron) (1) while keeping approximately 1
mm (0.03 in.) gap with respect to end face of CMP
sensor. See Fig. 2 and 3.
Does voltage vary from low (0 – 1 V) to high (4 – 5 V)
or from high to low?Go to Step 7. Replace CMP sen-
sor.
7 Check signal rotor for the following.
See Fig. 4.
Damage
No foreign material attached
Is it in good condition?Intermittent trouble or
faulty ECM.
Check for intermittent
referring to “Intermittent
and Poor Connection” in
Section 0A.Clean rotor teeth or
replace CMP sensor.

Downloaded from www.Manualslib.com manuals search engine 6A1-30 ENGINE MECHANICAL (M13 ENGINE)
12) Remove crankshaft pulley bolt.
To lock crankshaft pulley (1), use special tool with it as
shown in figure.
Special tool
(A) : 09917-68221
13) Remove crankshaft pulley (1).
If it is hard to remove, use special tools as shown in figure.
If bolts of special tool are too long, replace them with those
of suitable length.
Special tool
(A) : 09944-36011
(B) : 09926-58010
14) Remove oil pan referring to “Oil Pan and Oil Pump Strainer”
in this section.
15) Remove cylinder head cover referring to “Cylinder Head
Cover” in this section.
16) Disconnect CMP sensor coupler (1) and release its harness
clamps.
17) Remove water outlet pipe (2).
18) Remove timing chain cover (3).
CLEANING
Clean sealing surface on timing chain cover, cylinder block
and cylinder head.
Remove oil, old sealant and dust from sealing surface.

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REMOVAL
1) Relieve fuel pressure referring to “Fuel Pressure Relief Pro-
cedure” in Section 6.
2) Disconnect negative cable at battery.
3) Drain engine oil.
4) Drain coolant by loosening drain plug (1).
5) Remove air cleaner outlet No.1 and No.2 hoses and
breather hose.
6) Remove intake manifold bracket (1) with main harness from
intake manifold.
7) Disconnect the following electric lead wires:
EGR valve (if equipped)
IAC valve (2)
TP sensor (3)
MAP sensor (4)
CMP sensor
ECT sensor
EVAP canister purge valve (5)
Injectors (6)
Ignition coils
Heated oxygen sensor
Ground terminal (7) from intake manifold
Each wire harness clamps
8) Remove heated oxygen sensor bracket from cylinder head
and detach heated oxygen sensor coupler from its bracket. WARNING:
To help avoid danger of being burned, do not remove
drain plug (1) and radiator cap while engine and radiator
are still hot. Scalding fluid and steam can be blown out
under pressure if plug and cap are taken off too soon.