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6E–1 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
4JX1–TC 3.0L ENGINE
DRIVEABILITY AND EMISSIONS
CONTENTS
Specification 6E–7. . . . . . . . . . . . . . . . . . . . . . . . . .
Tightening Specifications 6E–7. . . . . . . . . . . . . . .
Diagrams and Schematics 6E–8. . . . . . . . . . . . . . . .
ECM Wiring Diagram (1 of 6) 6E–8. . . . . . . . . . . .
ECM Wiring Diagram (2 of 6) 6E–9. . . . . . . . . . . .
ECM Wiring Diagram (3 of 6) 6E–10. . . . . . . . . . . .
ECM Wiring Diagram (4 of 6) 6E–11. . . . . . . . . . . .
ECM Wiring Diagram (5 of 6) 6E–12. . . . . . . . . . . .
ECM Wiring Diagram (6 of 6) 6E–13. . . . . . . . . . . .
ECM Pinouts 6E–14. . . . . . . . . . . . . . . . . . . . . . . . . . .
ECM Pinout Table, 32-Way Connector – J1
RED – Upper 6E–14. . . . . . . . . . . . . . . . . . . . . . . . .
ECM Pinout Table, 32-Way Connector – J1
RED – Lower 6E–15. . . . . . . . . . . . . . . . . . . . . . . . .
ECM Pinout Table, 32-Way Connector – J2
BLUE – Upper 6E–16. . . . . . . . . . . . . . . . . . . . . . . .
ECM Pinout Table, 32-Way Connector – J2
BLUE – Lower 6E–17. . . . . . . . . . . . . . . . . . . . . . . .
ECM Pinout Table, 5-Way Connector – J3 6E–18
Component Locator 6E–19. . . . . . . . . . . . . . . . . . . . .
Sensors and Miscellaneous Component
Locators 6E–21. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Abbreviations Charts 6E–23. . . . . . . . . . . . . . . . . . . .
Diagnosis 6E–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Strategy-Based Diagnostics 6E–24. . . . . . . . . . . . .
Strategy-Based Diagnostics 6E–24. . . . . . . . . . . . .
DTC Stored 6E–24. . . . . . . . . . . . . . . . . . . . . . . . . . .
No DTC 6E–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
No Matching Symptom 6E–24. . . . . . . . . . . . . . . . .
Intermittents 6E–24. . . . . . . . . . . . . . . . . . . . . . . . . .
No Trouble Found 6E–24. . . . . . . . . . . . . . . . . . . . .
Verifying Vehicle Repair 6E–24. . . . . . . . . . . . . . . .
General Service Information 6E–25. . . . . . . . . . . . . .
Serviceability Issues 6E–25. . . . . . . . . . . . . . . . . . .
Visual/Physical Engine Compartment
Inspection 6E–25. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basic Knowledge of Tools Required 6E–25. . . . . .
Serial Data Communications 6E–25. . . . . . . . . . . . . .
Class II Serial Data Communications 6E–25. . . . .
On-Board Diagnostic (OBD) 6E–25. . . . . . . . . . . . . .
On-Board Diagnostic Tests 6E–25. . . . . . . . . . . . .
Comprehensive Component Monitor
Diagnostic Operation 6E–25. . . . . . . . . . . . . . . . . .
Common OBD Terms 6E–26. . . . . . . . . . . . . . . . . .
The Diagnostic Executive 6E–26. . . . . . . . . . . . . . .
DTC Types 6E–26. . . . . . . . . . . . . . . . . . . . . . . . . . .
Verifying Vehicle Repair 6E–27. . . . . . . . . . . . . . . . Reading Flash Diagnostic Trouble Codes 6E–27.
Reading Diagnostic Trouble Codes Using
a TECH 2 6E–28. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tech 2 Scan Tool 6E–29. . . . . . . . . . . . . . . . . . . . . .
Getting Started 6E–30. . . . . . . . . . . . . . . . . . . . . . . .
DTC Modes 6E–32. . . . . . . . . . . . . . . . . . . . . . . . . . .
DTC Information Mode 6E–32. . . . . . . . . . . . . . . . .
Injector Test 6E–32. . . . . . . . . . . . . . . . . . . . . . . . . .
EGR Valve Test 6E–32. . . . . . . . . . . . . . . . . . . . . . .
Rail Pressure Control Valve Test 6E–32. . . . . . . . .
Injector Balance Test 6E–32. . . . . . . . . . . . . . . . . . .
Data Programming in Case of ECM Change 6E–32
Rail Pressure Sensor Programming 6E–33. . . . . .
Injector Group Sign Programming
(Injector Change) 6E–33. . . . . . . . . . . . . . . . . . . . .
On-Board Diagnostic (OBD) System Check 6E–35.
Circuit Description 6E–37. . . . . . . . . . . . . . . . . . . . .
Diagnostic Aids 6E–37. . . . . . . . . . . . . . . . . . . . . . . .
Engine Control Module ECM Diagnosis 6E–39. . . .
Multiple ECM Information Sensor DTCS Set 6E–39
Circuit Description 6E–39. . . . . . . . . . . . . . . . . . . . .
Diagnostic Aids 6E–39. . . . . . . . . . . . . . . . . . . . . . . .
EGR (Exhaust Gas Recirculation) Diagnosis 6E–41
Tech 2 Data Definitions and Ranges 6E–41. . . . . . .
Typical Scan Data Values 6E–41. . . . . . . . . . . . . . . .
Test Conditions 6E–41. . . . . . . . . . . . . . . . . . . . . . . .
4JX1-TC Engine (Automatic and Manual
Transmission) 6E–42. . . . . . . . . . . . . . . . . . . . . . . .
No Malfunction Indicator Lamp (MIL) 6E–44. . . . . . .
Circuit Description 6E–44. . . . . . . . . . . . . . . . . . . . .
Diagnostic Aids 6E–44. . . . . . . . . . . . . . . . . . . . . . . .
Malfunction Indicator Lamp (MIL) “ON”
Steady 6E–47. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit description 6E–47. . . . . . . . . . . . . . . . . . . . .
Diagnostic Aids 6E–47. . . . . . . . . . . . . . . . . . . . . . . .
Engine Cranks But Will Not Run 6E–49. . . . . . . . . . .
Circuit Description 6E–49. . . . . . . . . . . . . . . . . . . . .
Diagnostic Aids 6E–49. . . . . . . . . . . . . . . . . . . . . . . .
Exhaust Gas Recirculation (EGR) System
Check 6E–52. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Description 6E–52. . . . . . . . . . . . . . . . . . . . .
ECM Diagnostic Trouble Codes 6E–54. . . . . . . . . . .
ECM Diagnostic Trouble Codes 6E–54. . . . . . . . .
Diagnostic Trouble Code (DTC) P0107
(Flash DTC 34)
MAP Sensor Circuit Low Voltage 6E–56. . . . . . . . . .

6E–16
4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
ECM Pinout Table, 32-Way Connector – J2 BLUE – Upper
060RW138
J2 – BLUE
PINSIGNAL
1INJECTOR A RTN
2INJECTOR B RTN
3INJECTOR C RTN
4INJECTOR D RTN
5CLASS 2
6SDATA
7RAIL OIL PRESSURE
8IDLE SW
9IGN SW
10BATTERY
11QUICK WARM REQ. SW
12PARTIAL IDLE SW
13CERAMIC HTR REQUEST SW
14INTAKE SW S2B
15INTAKE SW S1T
16INTAKE SW S1B

6E–17 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
ECM Pinout Table, 32-Way Connector – J2 BLUE – Lower
060RW137
J2 – BLUE
PINSIGNAL
17COOLANT TEMP OUT
18OIL TEMPERATURE
19TDC/CAM
20SPARE ANALOG 2
21INTAKE AIR TEMPERATURE
22+5VRTN2
23BOOST/INLET PRESSURE
24+5VRTN3
25ACCELERATOR POSITION
26+5VRTN1
27EGR VACUUM PRESSURE
28INTAKE SM S2T
29DIAGNOSTIC REQUEST SW
30COOLANT TEMPERATURE
31A/T PARK SW
32CRANKSHAFT

6E–23 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
Abbreviations Charts
List of abbreviations which may be used in this section.
Abbreviations
Te r mAbbreviationsTe r m
A/CAir ConditionerBLKBlack
A/TAutomatic TransmissionBLUBlue
ACCAccessoryBRNBrown
APAccel PositionGRNGreen
ASMAssemblyGRYGray
CKPCrank PositionLT B L ULight Blue
CMPCam PositionLT G R NLight Green
DLCData Link ConnectorORNOrange
DTCDiagnosis Trouble CodePNKPink
DVMDigital Volt MeterREDRed
ECMEngine Control ModuleVIOViolet
ECTEngine Coolant TemperatureWHTWhite
EGRExhaust Gas RecircurationYELYe l l o w
EVRVElectric Vacuum Regulating Valve
EXHExhaust
FTFuel Temperature
IATIntake Air Temperature
IGIgnition
ITPIntake Throttle Position
M/TManual Transmission
MAPManifold Absolute Pressure
MILMulfunction Indicator Lamp
OBDOn-Board Diagnostic
OTOil Temperature
QOSQuick on Start System
QWSQuick Warming-Up System
RPRail Pressure
RPCVRail Pressure Control Valve
SRSSupplemental Restraint System
STStart
SWSwitch
TEMPTemperature
TODTorque on Demand
VSSVehicle Speed Sensor
VSVVacuum Switching Valve
HEUIHydraulically Actuated Electronically Controlled Unit
InjectorInjector

6E–57 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
DTC P0107 – MAP Sensor Circuit Low Voltage
StepActionVa l u e ( s )Ye sNo
1Was the “On-Board Diagnostic (OBD) System Check”
performed?
—Go to Step 2
Go to OBD
System
Check
2Put the engine into an idling status.
Is the MAP voltage value displayed on the Tech 2 below
the specified value?
0.25 VGo to Step 3
Refer to
Diagnostic
Aids
and
Symptom
Diagnosis
31. Turn off the ignition switch.
2. Remove the sensor connector connection.
3. Jumper between harness pins “red” and “blue”
wires.
4. Turn on the ignition switch “ON”.
Is the MAP voltage reading above the specified value?
4 VGo to Step 5Go to Step 4
41. Turn off the ignition switch.
2. Remove the jumper wire.
3. Connect the relay & solenoid checker
(5-8840-0386-0) to the battery voltage, then check
the MAP signal circuit (blue wire).
4. Turn on the ignition switch.
Is the value displayed on the Tech 2 above the specified
value?
4 VGo to Step 6Go to Step 7
5Check the terminal connection at the MAP sensor and
repair or replace terminal if necessary.
Is the action complete?
—Verify repair—
6Repair the 5V power circuit (red) harness or Replace
the ECM (Refer to the Data Programming in Case of
ECM change).
Is the action complete?
—Verify repair—
7Repair the signal circuit (blue) harness or Replace the
ECM (Refer to the Data Programming in Case of ECM
change).
Is the action complete?
—Verify repair—

6E–135 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
DTC P0405 – EGR Pressure Sensor Low Voltage
StepNo Ye s Va l u e ( s ) Action
31. Turn off the ignition switch.
2. Remove the sensor connector connection.
3. Jumper between harness pins “red” and “blue”
wires.
4. Turn on the ignition switch “ON”.
Is the EGR pressure sensor voltage reading above the
specified value?
4 VGo to Step 5Go to Step 4
41. Turn off the ignition switch.
2. Remove the jumper wire.
3. Connect the relay & solenoid checker
(5-8840-0386-0) to the battery voltage, then check
the EGR pressure sensor signal circuit (blue wire).
4. Turn on the ignition switch.
Is the value displayed on the Tech 2 above the specified
value?
4 VGo to Step 6Go to Step 7
5Check the terminal connection at the EGR pressure
sensor and repair or replace terminal if necessary.
Is the action complete?
—Verify repair—
6Repair the 5V power circuit (red) harness or Replace
the ECM (Refer to the Data Programming in Case of
ECM change).
Is the action complete?
—Verify repair—
7Repair the signal circuit (blue) harness or Replace the
ECM (Refer to the Data Programming in Case of ECM
change).
Is the action complete?
—Verify repair—

6E–153 4JX1–TC ENGINE DRIVEABILITY AND EMISSIONS
Test Description
Number(s) below refer to the step number(s) on the
Diagnostic Chart.
10. To avoid backprobing the VSS and possibly
damaging a seal or terminal, the VSS output can be
tested at the point where the transmission harness
connected to the engine harness. The green 16-way
connector is adjacent to a blue 16-way connector,
and it can be easily accessed by removing the air
cleaner assembly. The green 16-way connector is
separated, and battery voltage is applied to the VSS
through the yellow wire at one corner of the
connector. The VSS output can be monitored with a
DVM connected to the blue wire with a black tracer.
The two wires are next to each other in the 16-way
connector . The test connections are made on the
transmission side of the connector, the side that is
not clipped to the body sheetmetal.11. The speedometer-to-ECM VSS signal wire is
spliced to a wire leading to the cruise control
module. If a short to ground or voltage is found
between the ECM and speedometer, it could be
located between the splice and the cruise control
module.
DTC P0502 –VSS No Signal
StepActionVa l u e ( s )Ye sNo
1Was the “On-Board Diagnostic (OBD) System Check”
performed?
—Go to Step 2
Go to OBD
System
Check
2Does the speedometer work?—Go to Step 10Go to Step 3
31. Disconnect the VSS connector.
2. Ignition “ON.”
3. Using a test light to battery +, probe the connector
ground wire.
Did the light illuminate?
—Go to Step 5Go to Step 4
4Repair the sensor ground.
Is the action complete?
—Verify repair—
51. Ignition “ON,” sensor disconnected.
2. Using a DVM, measure at the VSS connector
between ground and voltage supply.
Was the measurement near the specified value?
Battery
voltage
Go to Step 7Go to Step 6
6Repair the open or short to ground which may have
blown the meter fuse.
Is the action complete?
—Verify repair—
71. Ignition “ON,” VSS disconnected.
2. Using a DVM, measure at the VSS connector
between ground and the blue/black wire from the
speedometer.
Was the measurement near the specified value?
7.5-8 VGo to Step 9Go to Step 8
8Check for an open or short circuit between the
speedometer and the VSS.
Was an open or short circuit located?
—Verify repairGo to Step 9
9Replace the VSS.
Is the action complete?
—Verify repairGo to Step 10
10Replace the speedometer.
Is the action complete?
—Verify repairGo to Step 11

7A–53 AUTOMATIC TRANSMISSION (4L30–E)
22. Second clutch end play measurement
1. Install the 5–8840–2262–0 (J–23085–A)
Selective washer gauging tool (with spacer ring)
on the case flange and against the intermediate
shaft.
2. Position the inner shaft of the gauging tool against
the thrust surface of the second clutch hub.
3. Tighten thumb screw. Remove the tool.
4. Fit the spacer ring on the inner shaft of the tool.
5. Measure the gap, and select the appropriate
washer as shown in the chart.
Selective Thrust Washer
Gap: mm(in)Color
1.53 – 1.63 (0.060 – 0.064)Yellow
1.72 – 1.82 (0.068 – 0.072)Red
1.91 – 2.01 (0.075 – 0.079)Black
2.10 – 2.20 (0.083 – 0.087)Natural
2.29 – 2.39 (0.090 – 0.094)Green
2.48 – 2.58 (0.098 – 0.102)Blue
FOLLOWING THE PROCEDURE SHOULD
RESULT IN FINAL END–PLAY FROM 0.36 mm TO
0.79 mm (0.014 in TO 0.031 in)
247RY00048
247RW004
23. Inspect fourth clutch piston seals and replace if
necessary.
Lubricate 5–8840–2267–0 (J–38554) fourth clutch
piston fitter and install it on fourth clutch piston (19).
Install fourth clutch piston (19) in adapter case (20).
Remove fitter.
252RW006