2000 CHRYSLER CARAVAN brake

TEST TC-20ACONTINUED - REPAIRING - BRAKE SWITCH PLAUSIBILITY WITH REDUNDANT
CONTACT
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST TC-20A KEY OFF.
CONTINUED FROM DISCONNECT THE
THE PREVIOUS BRAKE LAMP SWITCH
PAGE. HARNESS
CONNECTOR.**
USING A VOLTMETER,
PROBE BRAKE SWITCH IS THE VOLTAGE NO REPAIR OPEN FUSED
HARNESS CONNECTOR ABOVE 9.0 VOLTS? BATTERY SUPPLY
CAVITY 6. CIRCUIT.*
FIG.1
YES
CONNECT A JUMPER
WIRE ACROSS THE DID THE DRB CHANGE YES ADJUST OR REPLACE
BRAKE LAMP FROM "RELEASED" TO THE BRAKE LAMP
HARNESS CONNECTOR "PRESSED"? SWITCH.*
CAV 5 AND 6. FIG.1
NO
KEY ON. USING A AT THE BRAKE LAMP REPAIR THE PRIMARY
VOLTMETER, MEASURE SWITCH HARNESS IS THE VOLTAGE YES BRAKE LAMP SWITCH
THE PRIMARY SWITCH CONNECTOR CAVITY 5. ABOVE 1.0 VOLT? SIGNAL CIRCUIT FOR
SIGNAL VOLTAGE... A SHORT TO
FIG.1 VOLTAGE.*
NO
KEY OFF. USING AN OHMMETER, REPAIR THE OPEN
DISCONNECT THE ECM MEASURE RESISTANCE IS THE RESISTANCE NO PRIMARY BRAKE LAMP
HARNESS OF THE PRIMARY BRAKE BELOW 5.0 OHMS? SWITCH SIGNAL
CONNECTORS.** LAMP SWITCH SIGNAL CIRCUIT.*
CIRCUIT. FIG.2
YES
REPLACE THE ENGINE
CONTROL MODULE.* SW
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TEST TC-20BREPAIRING - BRAKE SWITCH PLAUSIBILITY WITH REDUNDANT CONTACT
Perform TEST TC-20A Before Proceeding
FIG.1
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TEST TC-20BREPAIRING - BRAKE SWITCH PLAUSIBILITY WITH REDUNDANT CONTACT
Perform TEST TC-20A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
START TEST
TC-20B. TURN IGNITION OFF.
DISCONNECT THE KEY ON. USING A
BRAKE LAMP SWITCH VOLTMETER, MEASURE IS THE VOLTAGE NO CONTINUE TEST
HARNESS HARNESS CONNECTOR ABOVE 9.0 VOLTS? TC-20B ON THE
CONNECTOR.** CAVITY 1. NEXT PAGE.
FIG.1
YES
CONNECT A FUSEDREPAIR THE
JUMPER WIRE (5 AMP),YES SECONDARY BRAKE SW
ACROSS BRAKE LAMP CHECK THE FUSE. DID FUSE OPEN? SENSE CIRCUIT FOR
SWITCH HARNESS CONN A SHORT TO
CAVITIES 1 AND 2. VOLTAGE.*
NO
DID THE DRB
DISPLAY CHANGE YES ADJUST OR REPLACE
FROM "PRESSED" TO THE BRAKE LAMP
"RELEASED"? SWITCH.*
NO
KEY OFF. BRAKE LAMP SWITCH REPAIR THE OPEN
USING AN OHMMETER, HARNESS CONNECTOR IS THE RESISTANCE NO SECONDARY BRAKE
MEASURE THE CAVITY 2 AND GROUND. BELOW 5.0 OHMS? LAMP SWITCH GROUND
RESISTANCE CIRCUIT.*
BETWEEN... FIG.1
YES
REPLACE THE ENGINE
CONTROL MODULE.*
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TEST TC-20BCONTINUED - REPAIRING - BRAKE SWITCH PLAUSIBILITY WITH REDUNDANT
CONTACT
FIG.1
FIG. 2
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TEST TC-20BCONTINUED - REPAIRING - BRAKE SWITCH PLAUSIBILITY WITH REDUNDANT
CONTACT
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST TC-20B KEY OFF.
CONTINUED FROM DISCONNECT THE ECM
THE PREVIOUS HARNESS
PAGE. CONNECTORS.**
OF THE SECONDARY REPAIR OPEN IN THE
USING AN OHMMETER, BRAKE LAMP SWITCH IS THE RESISTANCE NO SECONDARY BRAKE
MEASURE THE SIGNAL CIRCUIT. BELOW 5.0 OHMS? LAMP SWITCH SIGNAL
RESISTANCE...CIRCUIT.*
FIG.1
YES
USING AN OHMMETER, THE BRAKE LAMP REPAIR SHORT TO
MEASURE THE SWITCH HARNESS IS THE RESISTANCE YES GROUND IN THE
RESISTANCE CONNECTOR CAVITY 1 BELOW 5.0 OHMS? SECONDARY BRAKE
BETWEEN... AND GROUND. LAMP SWITCH SIGNAL
FIG.2 CIRCUIT.*
NO
REPLACE THE ENGINE
CONTROL MODULE.*
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TEST TC-91BREPAIRING - VEHICLE SPEED SENSOR TROUBLE CODES
Perform TEST TC-91A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
USING THE DRB
START TEST RECONNECT THE VSS RAISE AND SUPPORT OSCILLOSCOPE
TC-91B. AND ECM HARNESS THE VEHICLE DRIVE FUNCTION SELECT
CONNECTORS. AXLE. "LAB SCOPE".
SET VOLTAGE RANGE USING THE
TO +10.0v. SET TIME RANGE TO OSCILLOSCOPE LEAD,
SET PROBE TO x10. 40ms/Div. BACKPROBE ECM
HARNESS CONNECTOR
FIG.1 FIG.2 CAVITY 51. FIG.3
START THE ENGINE. SHIFT TRANSMISSION
INTO FIRST GEAR
ENGAGE THE PARKING AND ALLOW THE
BRAKE. WHEELS TO ROTATE
AT IDLE SPEED.
NOTE: A VALID VSS DOES THE DRB
OBSERVE THE DRB SIGNAL WILL CYCLE DISPLAY THE 5.0 NO REPLACE THE
OSCILLOSCOPE HI TO LOW SIMILAR VOLT VSS SIGNAL VEHICLE SPEED
PATTERN. TO THE PATTERN CYCLING HI AND SENSOR.*
SHOWN IN FIGURE 2. LOW?
YES
REPLACE THE ENGINE
CONTROL MODULE.*
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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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