2000 CHRYSLER CARAVAN sensor

TEST NTC-8ACHECKING FUEL TEMPERATURE SENSOR CALIBRATION
Perform TEST NTC-1A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
KEY ON, ENGINE START AND IDLE THE
START TEST OFF. USING THE ENGINE UNTIL
NTC-8A. DRB, MONITOR THE ENGINE TEMPERATURE
ECT SENSOR INPUT. REACHES 70*C
(160*F).
NOTE: IF ENGINE TEMP USING THE DRB, IS THE FUEL
IS ABOVE 70*C READ THE FUEL TEMPERATURE NO REPLACE THE FUEL
(160*F), ALLOW THE TEMPERATURE SENSOR BETWEEN INJECTION PUMP
ENGINE TO COOL DOWN INPUT. 20*C (70*F) AND ASSEMBLY.*
TO 70*C (160*F). 50*C (120*F)?
YES
COMPARE THE ECT START THE ENGINE DOES THE FUEL TEMP
AND FUEL AND ALLOW IT TO SENSOR READING NO REPLACE THE FUEL
TEMPERATURE SENSOR REACH OPERATING INCREASE STEADILY INJECTION PUMP
INPUTS IN THE TEMPERATURE OF TO 38-60*C ASSEMBLY.*
FOLLOWING STEP. 80*C (195*F). (100-140*F)?
YES
FUEL
TEMPERATURE
SENSOR OPERATING
NORMALLY.
TEST PASSED.
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TEST NTC-12ACHECKING THE ENGINE MECHANICAL SYSTEMS
Perform TEST NTC-1A Before Proceeding
At this point in the diagnostic test procedure, you have determined that all of theengine electrical
systemsare operating as designed; therefore, theyare not the cause of the driveability problem.
The following additional items should be checked as possible mechanical causes of the problem.
1. ENGINE VALVE TIMING- must be within specifications
2. ENGINE COMPRESSION- must be within specifications
3. CAMSHAFT LOBES- check for abnormal wear
4. ENGINE SPEED SENSOR PICK-UP- check flywheel slots for debris/deterioration
5. ENGINE EXHAUST SYSTEM- must be free of any restrictions
6. ENGINE DRIVE SPROCKET- must be properly positioned
7. POWER BRAKE BOOSTER- no internal vacuum leaks
8. FUEL- must be free of contamination
9. FUEL INJECTOR- plugged or restricted injector
10. FUEL INJECTION PUMP- must be properly timed
NOTE:Always look for any Technical Service Bulletins that may relate to the problem.
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TEST SC-1ACHECKING SPEED CONTROL OPERATION
*Perform Verification TEST VER-3A. **Check connectors - Clean / repair as necessary.
START TEST KEY ON. WITH THE
SC-1A. DRB, SELECT
"SENSOR DISPLAY".
PRESS EACH OF THE PRESSING EACH SWITCH DID EACH SWITCH
CRUISE SWITCH SHOULD RESULT IN A PROVIDE THE NO PERFORM TEST
BUTTONS WHILE VOLTAGE INPUT SHOWN CORRECT VOLTAGE SC-2A.
OBSERVING CRUISE IN FIG.1. INPUT.
SWITCH VOLTS.
YES
WITH THE DRB, DID THE DRB INDICATE
MONITOR THE WHILE PRESSING AND THE CORRECT CHANGE NO PERFORM TEST
PRIMARY AND RELEASING THE OF STATE FROM SC-3A.
SECONDARY BRAKE BRAKE PEDAL. "RELEASED" TO
SWITCH INPUT... "PRESSED".
YES
DID THE DRB INDICATE
WITH THE DRB, WHILE PRESSING AND THE CORRECT CHANGE NO PERFORM TEST
MONITOR THE CLUTCH RELEASING THE OF STATE FROM SC-4A.
SWITCH INPUT. CLUTCH PEDAL. "RELEASED" TO
"PRESSED".
YES
WITH THE DRB,
MONITOR VEHICLE DOES THE DRB NO PERFORM TEST
SPEED WHILE DISPLAY ACCURATE SC-6A.
DRIVING THE VEHICLE SPEED?
VEHICLE.
YES
DRIVE VEHICLE AND ATTEMPT TO SET DID THE SPEED YES
GENERATE A SPEED SPEED CONTROL. CONTROL MAINTAIN TEST COMPLETED.*
ABOVE 35KM/H. SET VEHICLE SPEED?
NO
CONTINUE TEST
SC-1A ON THE
NEXT PAGE.
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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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rough,
un-stable or
erratic idle
stallingThe engine runs unevenly at idle and causes the engine to shake if it is
severe enough. The engine idle rpm may vary (called ``hunting''). This
condition may cause stalling if it is severe enough.
SKIMSentry key immobilizer module
SKISSentry key immobilizer system
start and
stallThe engine starts but immediately dies.
surgeengine rpm fluctuation without corresponding change in throttle position
sensor
SRCsignal range check
VSSvehicle speed sensorG
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