Dodge Dakota (R1). Manual — part 817
TABLE OF CONTENTS - Continued
GENERATOR (GAS) - BLACK 2 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .378
IDLE AIR CONTROL MOTOR - BLACK 4 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .379
IGNITION COIL - GRAY 2 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .379
INSTRUMENT CLUSTER C1 - GRAY 10-WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .379
INSTRUMENT CLUSTER C2 - BLACK 10-WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .379
INTAKE AIR TEMPERATURE SENSOR (3.9L/5.2L) - GRAY 2 WAY . . . . . . . . . . . . . .380
MANIFOLD ABSOLUTE PRESSURE SENSOR - BLACK 3 WAY . . . . . . . . . . . . . . . .380
OUTPUT SPEED SENSOR - GRAY 2 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .380
OVERDRIVE SWITCH - NATURAL 2 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .380
OVERHEAD CONSOLE - 12 WAY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .381
OXYGEN SENSOR 1/1 UPSTREAM - BLACK 4 WAY . . . . . . . . . . . . . . . . . . . . . . . . .381
FUSES (GAS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .383
A/C COMPRESSOR CLUTCH RELAY (GAS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .383
AUTOMATIC SHUT DOWN RELAY (GAS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .383
ENGINE STARTER MOTOR RELAY (GAS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .384
FUEL PUMP RELAY (GAS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .384
OXYGEN SENSOR DOWNSTREAM HEATER RELAY . . . . . . . . . . . . . . . . . . . . . . . .384
RADIATOR FAN RELAY (GAS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .384
TRANSMISSION CONTROL RELAY (GAS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .384
POWERTRAIN CONTROL MODULE C1 (GAS) - BLACK 32 WAY . . . . . . . . . . . . . . .385
POWERTRAIN CONTROL MODULE C2 (GAS) - WHITE 32 WAY . . . . . . . . . . . . . . .386
POWERTRAIN CONTROL MODULE C3 (GAS) - GRAY 32 WAY . . . . . . . . . . . . . . . .387
RADIATOR FAN MOTOR - BLACK 2 WAY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .387
REAR WHEEL SPEED SENSOR - BLACK 2 WAY. . . . . . . . . . . . . . . . . . . . . . . . . . . .387
THROTTLE POSITION SENSOR (3.9L/5.2L) - GRAY 3 WAY . . . . . . . . . . . . . . . . . . .388
TRANSMISSION RANGE SENSOR (3.9L/5.2L) - BLACK 6 WAY . . . . . . . . . . . . . . . .388
TRANSMISSION SOLENOID ASSEMBLY (3.9L/5.2L) - BLACK 8 WAY . . . . . . . . . . .388
SCHEMATIC DIAGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .389
10.1 2001 DODGE 2.5L JTEC SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .389
10.2 2001 DODGE 3.9L JTEC SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .390
10.3 2001 DODGE 4.7L JTEC SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .391
10.4 2001 DODGE 5.9L JTEC SYSTEM CALIFORNIA . . . . . . . . . . . . . . . . . . . . . . .392
10.5 2001 DODGE 5.9L JTEC SYSTEM FEDERAL . . . . . . . . . . . . . . . . . . . . . . . . . .393
CHARTS AND GRAPHS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .394
vi
1.0
INTRODUCTION
The procedures contained in this manual include
specifications, instructions, and graphics needed to
diagnose the PCM Powertrain System. The diag-
nostics in this manual are based on the failure
condition or symptom being present at the time of
diagnosis.
Please follow the recommendations below when
choosing your diagnostic path.
1. First make sure the DRBIII
t is communicating
with the appropriate modules; ie., if the DRBIII
t
displays a ‘‘No Response’’ condition, you must
diagnose this first before proceeding.
2. Read DTC’s (diagnostic trouble codes) with the
DRBIII
t.
3. If no DTC’s are present, identify the customer
complaint.
4. Once the DTC or customer complaint is identi-
fied, locate the matching test in the Table of
Contents and begin to diagnose the symptom.
All component location views are in Section 8.0.
All connector pinouts are in Section 9.0. All system
schematic diagrams are in Section 10.0. All charts
and graphs are in Section 11.
An * placed before the symptom description indi-
cated a customer complaint.
When repairs are required, refer to the appropri-
ate service manual for the proper removal and
repair procedure.
Diagnostic procedures change every year. New
diagnostic systems may be added; carryover sys-
tems may be enhanced. READ THIS MANUAL
BEFORE TRYING TO DIAGNOSE A VEHICLE
CODE. It is recommended that you review the
entire manual to become familiar with all new and
changed diagnostic procedures.
After using this book, if you have any comments
or recommendations, please fill out the form at the
back of the book and mail to back to us.
1.1
SYSTEM COVERAGE
This diagnostic procedures manual covers 2001
Dodge Truck vehicles with a JTEC Engine and 4
speed Chrysler Transmission Controller (PCM).
1.2
SIX-STEP TROUBLESHOOTING
PROCEDURE
Diagnosis of the Powertrain Control Module
(PCM) is done in six basic steps:
•
verification of complaint
•
verification of any related symptoms
•
symptom analysis
•
problem isolation
•
repair of isolated problem
•
verification of proper operation
2.0
IDENTIFICATION OF
SYSTEM
The Powertrain Control Module (PCM) monitors
and controls:
•
fuel system
•
ignition system
•
charging system
•
speed control system
•
automatic transmission
3.0
SYSTEM DESCRIPTION AND
FUNCTIONAL OPERATION
3.1
GENERAL DESCRIPTION
The Dodge Truck engine and Auto Transmission
systems have the latest in technical advances. The
on-board OBDII diagnostics incorporated with the
PCM controller are intended to assist the field
technician in repairing vehicle problems by the
quickest means.
3.2
FUNCTIONAL OPERATION
3.2.1
FUEL CONTROL
The PCM controls the air/fuel ratio of the engine
by varying fuel injector on time. Mass air flow is
calculated using the speed density method using
engine speed, manifold absolute pressure, and air
temperature change.
Different fuel calculation strategies are used de-
pendent on the operational state of the engine.
During crank mode, a prime shot fuel pulse is
delivered followed by fuel pulses determined by a
crank time strategy. Cold engine operation is deter-
mined via an open loop strategy until the O2
sensors have reached operating temperature. At
this point, the strategy enters a closed loop mode
where fuel requirements are based upon the state of
the O2 sensors, engine speed, MAP, throttle posi-
tion, air temperature, battery voltage, and coolant
temperature.
1
GENERAL INFORMATION
3.2.2
ON BOARD DIAGNOSTICS
The PCM has been programmed to monitor many
different circuits of the fuel injection system. This
monitoring is called ‘‘on-board diagnosis’’.
Certain criteria, or ‘‘arming conditions’’, must be
met for a trouble code to be entered into the PCM
memory. The criteria may be a range of: engine rpm,
engine temperature, and/or input voltage to the
PCM. If a problem is sensed with a monitored
circuit, and all of the criteria or arming conditions
are met, a trouble code will be stored in the PCM.
It is possible that a trouble code for a monitored
circuit may not be entered into the PCM memory
even though a malfunction has occurred. This may
happen because one of the trouble code criteria
(arming conditions) has not been met.
The PCM compares input signal voltages from
each input device with specifications (the estab-
lished high and low limits of the range) that are
programmed into it for that device. If the input
voltage is not within specifications and other trou-
ble code criteria (arming conditions) are met, a
trouble code will be stored in the PCM memory.
The On Board Diagnostics have evolved to the
second Generation of Diagnostics referred to as
OBDII. These OBDII Diagnostics control the func-
tions necessary to meet the requirements of Cali-
fornia OBDII and Federal OBD regulations. These
requirements specify the inclusion of a Malfunction
Indicator Light (MIL) located on the instrument
panel for all 1994 and subsequent model-year pas-
senger cars, light duty trucks, and medium-duty
vehicles. The purpose of the MIL is to inform the
vehicle operator in the event of the malfunction of
any emission systems and components which can
affect emissions and which provide input to, or
receive output from, the powertrain control module.
The following table summarizes the various
OBDII monitors operation.
2
GENERAL INFORMATION
OBD II MONITOR INFORMATION
Comprehensive
Major Monitors
Major Monitors
Components
Non Fuel Control
Fuel Control
Monitor
& Non Misfire
& Misfire
Run constantly
Run Once Per Trip
Run Constantly
Includes All Engine Hardware
Monitors Entire Emission
Monitors Entire System
- Sensors, Switches,
System
Solenoids, etc.
One Trip Faults - Turns On
Two Trip Faults - Turns On
Two Trip Faults - Turns On
The MIL and Sets DTC After
The MIL and Sets DTC After
The MIL and Sets DTC After
One Failure
Two Consecutive Failures
Two Consecutive Failures
Priority 3
Priority 1 or 3
Priority 2 or 4
All Checked For Continuity
Done Stop Testing = Yes
Fuel Control Monitor
Open
Monitors Fuel Control
Short To Ground
Oxygen Sensor Heater
System For:
Short To Voltage
Oxygen Sensor Response
Fuel System Lean
Fuel System Rich
Inputs Checked For
Requires 3 Consecutive
Rationality
Catalytic Converter
Fuel System Good Trips
To
Efficiency Except EWMA
Extinguish The MIL
Outputs Checked For
- up to 6 tests per trip
Functionality
and a one trip fault
EGR System
Misfire Monitor
Evaporative Emission
Monitors For Engine Misfire
System
at:
(Purge and Leak)
1000 RPM Counter
Non-LDP
(Type B)
or
**200 RPM Counter
LDP
(Type A)
Requires 3 Consecutive
Requires 3 Consecutive
Requires 3 Consecutive
Global/Alternate Good Trips
Global Good Trips
Misfire Good Trips
to Extinguish the MIL*
to Extinguish the MIL*
To Extinguish the MIL
*40 Warm Up Cycles are required to erase
**Type A misfire is a one
DTC’s
after
the MIL has been extinguished.
trip failure. The MIL will
illuminate and blink at
the first failure.
3
GENERAL INFORMATION
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст