engine coolant CHRYSLER CARAVAN 2000 User Guide

TEST TC-82AREPAIRING - TEMPERATURE OF ENGINE COOLANT SRC LOW EXCEEDED
Perform TEST DTC Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
WITH THE DRB, READ IS THE ENGINE
START TEST THE ENGINE COOLANT COOLANT YES CONTINUE TEST
TC-82A. TEMPERATURE SENSOR TEMPERATURE SENSOR TC-82A ON THE
VOLTAGE. VOLTAGE BELOW NEXT PAGE.
0.3 VOLT?
NO
USING THE SCHEMATIC, WAS THERE ANY REPAIR THE HARNESS
WIGGLE THE ENGINE MONITOR THE DRB ENGINE COOLANT YES OR CONNECTOR THAT
COOLANT TEMPERATURE DISPLAY. TEMPERATURE SENSOR CAUSED THE VOLTAGE
SENSOR CONNECTOR & VOLTAGE CHANGE? CHANGE.*
HARNESS. FIG.1
NO
AT THIS TIME, THE USING THE
CONDITION REQUIRED SCHEMATIC AS A WERE ANY PROBLEMS YES REPAIR AS
TO SET THE CODE IS GUIDE, INSPECT THE FOUND? NECESSARY.*
NOT PRESENT. WIRING AND
FIG.2 CONNECTORS.
NO
REFER TO GENERAL
INFORMATION 3.3.2 YES
FOR ADDITIONAL TEST COMPLETE.*
INFORMATION ON
INTERMITTENT CODES.
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TEST TC-82ACONTINUED - REPAIRING - TEMPERATURE OF ENGINE COOLANT SRC LOW
EXCEEDED
FIG.1
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TEST TC-82ACONTINUED - REPAIRING - TEMPERATURE OF ENGINE COOLANT SRC LOW
EXCEEDED
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST TC-82A DISCONNECT THE
CONTINUED FROM ENGINE COOLANT
THE PREVIOUS TEMPERATURE SENSOR
PAGE. HARNESS
CONNECTOR.**
WITH THE DRB, READ IS THE ENGINE REPLACE THE ENGINE
ENGINE COOLANT COOLANT YES COOLANT
TEMPERATURE SENSOR TEMPERATURE SENSOR TEMPERATURE
VOLTAGE. VOLTAGE ABOVE 4.0 SENSOR.*
VOLTS?
NO
KEY OFF. USING AN OHMMETER, REPAIR THE SENSOR
DISCONNECT THE ECM MEASURE BETWEEN THE IS THE RESISTANCE YES SIGNAL CIRCUIT FOR
HARNESS SENSOR SIGNAL BELOW 5.0 OHMS? A SHORT TO
CONNECTORS.** CIRCUIT AND GROUND. GROUND.*
FIG.1
NO
WITH AN OHMMETER SENSOR SIGNAL REPAIR THE ECT
MEASURE THE CIRCUIT AND THE IS THE RESISTANCE YES SENSOR SIGNAL
RESISTANCE BETWEEN SENSOR GROUND BELOW 5.0 OHMS? CIRCUIT FOR A SHORT
THE ENGINE COOLANT CIRCUIT. TO THE ECT SENSOR
TEMPERATURE... FIG.1 GROUND CIRCUIT.*
NO
REPLACE THE ENGINE
CONTROL MODULE.*
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TEST NTC-1ANO TROUBLE CODE TEST MENU
First, check all Technical Service Bulletins that relate to this driveability problem. Perform corrective
actions if indicated; otherwise continue.
1.NO TROUBLE CODE COMPLETE TEST(non-monitored and monitored circuits)
PerformNTC-2AthroughNTC-13Ain sequence until the driveability problem is found.
NO TROUBLE CODE MENU
CHECKING GLOW PLUG OPERATION.........................................NTC-2A
CHECKING FUEL INJECTION PUMP CIRCUITS.................................NTC-3A
CHECKING THE PCM POWER AND GROUND CIRCUITS.........................NTC-4A
CHECKING ENGINE COOLANT SENSOR CALIBRATION..........................NTC-5A
CHECKING ACCELERATOR PEDAL SENSOR CALIBRATION......................NTC-6A
CHECKING BOOST PRESSURE SENSOR CALIBRATION.........................NTC-7A
CHECKING FUEL TEMPERATURE SENSOR CALIBRATION.......................NTC-8A
CHECKING EGR SYSTEM...................................................NTC-9A
CHECKING THE FUEL HEATER.............................................NTC-10A
CHECKING RADIATOR FAN OPERATION.....................................NTC-11A
CHECKING THE ENGINE MECHANICAL SYSTEMS.............................NTC-12A
CHECKING THE TURBOCHARGER..........................................NTC-13A
2.NO TROUBLE CODE QUICK INDIVIDUAL TEST(individual test only)
If you suspect any of the above items to be the cause of the vehicle's driveability problem, perform
the associated test(s) individually.Return to No Trouble Code Menu if driveability problem still
exists, or perform No Trouble Code Complete Test.
3.NO TROUBLE CODE QUICK SYMPTOM TEST(symptom test only)
Symptom checks cannot be used properly unless the driveability problem characteristic actually
happens while the vehicle is being tested. To reduce diagnostic time, ensure that DTC TEST and
appropriate GENERAL INFORMATION sections have been reviewed before attempting to diagnose
a symptom.
Select the symptom that most accurately describes the vehicle's driveability problem and then
perform the test routine that pertains to this symptom. Perform each routine test in sequence until
the problem is found. For definitions, see Section 12.0 in the GENERAL INFORMATION section in
this manual.
NOTE:For all component locations seeGeneral Information Section 4.0in this manual.
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TEST NTC-5ACHECKING ENGINE COOLANT SENSOR CALIBRATION AND RADIATOR FAN
OPERATION
Perform TEST NTC-1A Before ProceedingN
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TEST NTC-5ACHECKING ENGINE COOLANT SENSOR CALIBRATION AND RADIATOR FAN
OPERATION
Perform TEST NTC-1A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
NOTE: USE A TEMPERA-
TURE PROBE TO ENSURE
ENGINE TEMPERATURE
IS ACTUALLY BELOW
70*C (160*F).
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TEST NS-SELNO START SELECTION MENU
NOTE:The battery must be fully charged before performing any test in this manual.
NOTE:If the engine will not crank or cranks but will not run, be sure to check the Sentry Key
Immobilizer Module (SKIM) for proper communication and trouble codes.
NOTE:With the DRB, attempt to read ECM trouble codes. If the DRB is unable to communicate with
the ECM, perform test NS-2A. If there are any trouble codes present they must be repaired before
continuing with the No Start Symptom diagnostics.
Below you will find a recommended procedure to correct a No Start Problem by symptom. They
should be performed in the order that they are listed.
Repairing a No Crank Condition..............................................NS-1A
Repairing a No Response Condition...........................................NS-2A
Repairing a No Start Condition................................................NS-3A
Repairing a Start and Stall Condition...........................................NS-4A
Checking the Engine Mechanical Systems......................................NS-5A
NOTE:A failed engine coolant temperature (ECT) sensor can cause a cranks but will not run or an
extended cranking before starting condition. This occurs when the ECT sensor calibration fails
(sensor indicates engine temp is warmer than actual engine temp) and the ECM cannot command
proper fuel quantity to the injection pump.
NOTE:For all component locations seeGeneral Information Section 4.0 in this manual.
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11.0 REQUIRED TOOLS AND EQUIPMENT
ammeter
DRB (diagnostic read-out box) scan tool
jumper wires and probes
ohmmeter
vacuum gauge
voltmeter
12.0 GLOSSARY OF TERMS
backfire,
popbackfuel ignites in either the intake or the exhaust system
BCMbody control module
cuts out,
missesa steady pulsation or the inability of the engine to maintain a consistent
rpm
DLCdata link connector (previously called ``engine diagnostic connector'')
detonation,
pre-ignitiona mild to severe ping, especially under loaded engine conditions
ECMengine control module
ECTengine coolant temperature sensor
EGRexhaust gas recirculation valve and system
generatorpreviously called ``alternator''
hard startThe engine takes longer than usual to start, even though it is able to
crank normally.
hesitation,
sag, stumbleThere is a momentary lack of response when the throttle is opened.
This can occur at all vehicle speeds. If it is severe enough, the engine
may stall.
IATintake air temperature sensor
lack of power,
sluggishThe engine has less than expected power, with little or no increase in
vehicle speed when the throttle is opened.
MILmalfunction indicator lamp
PDCpower distribution center
poor fuel
economyThere is significantly less fuel mileage than other vehicles of the same
design and configuration.
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