CHRYSLER CARAVAN 2000 Service Manual

TEST NTC-11DCHECKING RADIATOR FAN OPERATION
Perform TEST NTC-11A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
START TEST STOP LOW SPEED FAN
NTC-11D. ACTUATION.
KEY OFF.
SUBSTITUTE THE RAD PERFORM THE DO BOTH FANS CYCLE YES REPLACE THE
FAN #1 RELAY WITH "LOW SPEED FAN" ON AND OFF? INITIAL RAD FAN #1
A KNOWN GOOD ACTUATOR TEST. RELAY.*
RELAY.
NO
DISCONNECT THE
DISCONNECT RAD FAN LEFT SIDE FAN
#1 RELAY HARNESS MOTOR HARNESS
CONNECTOR.** CONNECTOR.**
USING AN OHMMETER, REPAIR THE SHORT
MEASURE THE GROUND IS THE RESISTANCE YES TO GROUND BETWEEN
CKT AT CAVITY 8 TO BELOW 10.0 OHMS? THE LEFT SIDE
GROUND. MOTOR AND RAD FAN
FIG.1 #1 REKAY.
NO
DISCONNECT THE USING AN OHMMETER, REPAIR THE RIGHT
RIGHT SIDE FAN MEASURE CAVITY 5 IS THE RESISTANCE YES SIDE FAN SUPPLY
MOTOR HARNESS TO GROUND. BELOW 10.0 OHMS? CIRCUIT FOR A
CONNECTOR.** SHORT TO GROUND.*
FIG.1
NO
CHECK RIGHT SIDE IS ANYTHING
FAN MOTOR FOR PREVENTING THE FAN YES REPAIR AS
BINDING OR DEBRIS MOTOR FROM NECESSARY.
WHICH MAY PREVENT TURNING?
FAN OPERATION.
NO
REPLACE THE RIGHT
SIDE FAN MOTOR.*
N
O
T
R
O
U
B
L
E
C
O
D
E
T
E
S
T
S
365
ProCarManuals.com

TEST NTC-12ACHECKING THE ENGINE MECHANICAL SYSTEMS
Perform TEST NTC-1A Before Proceeding
NOTES
N
O
T
R
O
U
B
L
E
C
O
D
E
T
E
S
T
S
366
ProCarManuals.com

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.
N
O
T
R
O
U
B
L
E
C
O
D
E
T
E
S
T
S
367
ProCarManuals.com

TEST NTC-13ACHECKING THE TURBOCHARGER OPERATION
Perform TEST NTC-1A Before Proceeding
FIG.1
FIG.2
N
O
T
R
O
U
B
L
E
C
O
D
E
T
E
S
T
S
368
ProCarManuals.com

TEST NTC-13ACHECKING THE TURBOCHARGER OPERATION
Perform TEST NTC-1A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
NOTE: THE EXHAUST CHECK THE AND THE
START TEST SYSTEM MUST BE TURBOCHARGER OUTLET TURBOCHARGER INLET
NTC-13A. FREE FROM ANY HOSE BETWEEN THE HOSE BETWEEN THE
RESTRICTIONS TO TURBOCHARGER AND THE TURBOCHARGER AND
PERFORM THIS TEST. INTAKE MANIFOLD... THE AIR CLEANER...
FOR LOOSE
CONNECTION, DAMAGE ARE ANY OF THESE YES REPAIR OR REPLACE
OR RESTRICTIONS. CONDITIONS AS NECESSARY.
EVIDENT?
FIG. 1
NO
CHECK THE WASTEGATE
ACTUATOR SUPPLY HOSE ARE ANY OF THESE YES REPAIR OR REPLACE
FOR LOOSE CONDITIONS AS NECESSARY.
CONNECTION, DAMAGE EVIDENT?
OR RESTRICTIONS.
NO
DISCONNECT THE USING AN AIR THE WASTEGATE
ACTUATOR SUPPLY PRESSURE REGULATOR, ACTUATOR SUPPLY
HOSE FROM THE CONNECT AN AIR HOSE HOSE.
INTAKE MANIFOLD. TO THE DISCONNECTED
FIG. 2 END OF... FIG. 2
START AT 0 PSI AIR NOTE: THE ACTUATOR
PRESSURE AND SLOWLY ARM SHOULD REMAIN FULLY OPEN AT
INCREASE TO 45 PSI CLOSED UNTIL AIR 34-40 PSI.
WHILE MONITORING THE PRESSURE REACHES
ACTUATOR ARM. FIG.2 17-20 PSI...
DID THE WASTEGATE
ACTUATOR UNSEAT YES CONTINUE TEST
AND FULLY OPEN AS NTC-13A ON THE
DESCRIBED? NEXT PAGE.
NO
DISCONNECT THE SHOP MANUALLY MOVE DOES THE WASTEGATE
AIR SUPPLY. REMOVE WASTEGATE ARM FROM ARM MOVE EASILY YES REPLACE THE
E-CLIP AND CLOSED TO FULLY WITHOUT WASTEGATE
DISCONNECT ACTUATOR OPEN POSITION. RESTRICTION? ACTUATOR.
ROD FROM ARM. FIG.2 FIG. 2
NO
CLEAN WASTEGATE ARM
OR WASTEGATE SHAFT
AS NECESSARY.
IF OK, REPLACE
TURBOCHARGER ASSLY.
N
O
T
R
O
U
B
L
E
C
O
D
E
T
E
S
T
S
369
ProCarManuals.com

TEST NTC-13ACONTINUED - CHECKING THE TURBOCHARGER OPERATION
FIG. 1
FIG. 2
N
O
T
R
O
U
B
L
E
C
O
D
E
T
E
S
T
S
370
ProCarManuals.com

TEST NTC-13ACONTINUED - CHECKING THE TURBOCHARGER OPERATION
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST NTC-13A DISCONNECT THE AIR CONNECT AN AIR
CONTINUED FROM PRESSURE REGULATOR PRESSURE GAUGE
THE PREVIOUS AND SHOP AIR INLINE WITH THE
PAGE. SUPPLY. ACTUATOR SUPPLY
HOSE. FIG. 1
NOTE: AIR PRESSURE NOTE: VEHICLE MUST FAILURE TO DRIVE WITH THE VEHICLE IN
GAUGE MUST BE BE ON FLAT LEVEL VEHICLE ON LEVEL FIRST GEAR, INCREASE
RATED TO AT LEAST ROAD TO PERFORM ROAD COULD RESULT ENGINE SPEED TO RPM
50 PSI. THE FOLLOWINGS IN INCORRECT BOOST INDICATED IN
STEPS. PRESSURE READINGS. FIGURE 2.
MAINTAIN EACH RECORD BOOST
INDICATED ENGINE RPM PRESSURE AT ALL
FOR SEVERAL SECONDS INDICATED ENGINE
UNTIL BOOST PRESSURE SPEEDS.
STABILIZES. FIG. 2
DO RECORDED
REPEAT PREVIOUS READINGS MATCH NO REPLACE THE
STEP FOR SECOND CHART READINGS TURBOCHARGER
GEAR. +OR- 2PSI FOR EACH ASSEMBLY.
GEAR INDICATED?
YES
TURBOCHARGER OK,
TEST PASSED.
N
O
T
R
O
U
B
L
E
C
O
D
E
T
E
S
T
S
371
ProCarManuals.com

TEST SC-1ACHECKING SPEED CONTROL OPERATION
FIG.1
S
P
E
E
D
C
O
N
T
R
O
L
T
E
S
T
S
372
ProCarManuals.com

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.
S
P
E
E
D
C
O
N
T
R
O
L
T
E
S
T
S
373
ProCarManuals.com

TEST SC-1ACONTINUED - CHECKING SPEED CONTROL OPERATION
FIG.1
S
P
E
E
D
C
O
N
T
R
O
L
T
E
S
T
S
374
ProCarManuals.com