CHRYSLER CARAVAN 2000 Workshop Manual

TEST TC-3AREPAIRING - A/C SYSTEM PRESSURE SIGNAL HIGH EXCEEDED
Perform TEST DTC Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TURN A/C ON.
START TEST WITH THE DRB, READ IS THE A/C OUTPUT YES CONTINUE TEST
TC-3A. THE A/C OUTPUT VOLTAGE ABOVE TC-3A ON THE
VOLTAGE. 4.8 VOLTS? NEXT PAGE.
NO
USE THE SCHEMATIC AS REPAIR THE HARNESS
A GUIDE AND WIGGLE MONITOR THE DRB WAS THERE ANY A/C YES OR CONNECTOR THAT
A/C PRESSURE SENSOR DISPLAY. OUTPUT VOLTAGE CAUSED THE VOLTAGE
CONNECTOR & HARNESS. CHANGE? CHANGE.*
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
FOR ADDITIONAL TEST COMPLETE.*
INFORMATION ON
INTERMITTENT CODES.
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TEST TC-3ACONTINUED - REPAIRING - A/C SYSTEM PRESSURE SIGNAL HIGH EXCEEDED
FIG.1
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TEST TC-3ACONTINUED - REPAIRING - A/C SYSTEM PRESSURE SIGNAL HIGH EXCEEDED
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST TC-3A
CONTINUED FROM DISCONNECT THE A/C
THE PREVIOUS PRESSURE SENSOR
PAGE.
KEY ON. USING A THE A/C PRESSURE REPAIR A/C
VOLTMETER MEASURE SENSOR SIGNAL IS THE VOLTAGE YES PRESSURE SENSOR
THE VOLTAGE CIRCUIT AND GROUND. ABOVE 5.0 VOLTS? SIGNAL SHORTED TO
BETWEEN... VOLTAGE.*
FIG.1
NO
KEY OFF. WITH AN OHMMETER, REPAIR THE SHORT
DISCONNECT THE ECM MEASURE BETWEEN A/C IS THE RESISTANCE YES BETWEEN THE A/C
HARNESS SENSOR SIGNAL CKT BELOW 5.0 OHMS? PRESSURE SENSOR
CONNECTORS.** AND 5-VOLT REF CKT. SIGNAL CKT AND THE
FIG.1 5-VOLT SUPPLY CKT.*
NO
RECONNECT THE ECM
HARNESS TURN IGNITION ON.
CONNECTORS.
CONNECT A JUMPER
WIRE BETWEEN THE A/C WITH THE DRB, READ IS THE VOLTAGE YES REPLACE THE A/C
PRESSURE SENSOR THE A/C OUTPUT BELOW 1.0 VOLT? PRESSURE SENSOR.*
SIGNAL AND SENSOR VOLTAGE.
GROUND CKTS. FIG.1
NO
MOVE THE JUMPER
WIRE FROM A/C READ THE A/C IS THE VOLTAGE YES REPAIR THE OPEN
PRESSURE SENSOR OUTPUT VOLTAGE. BELOW 1.0 VOLT? SENSOR GROUND
GROUND TO ENGINE CIRCUIT.*
GROUND.
NO
REPLACE THE ENGINE
CONTROL MODULE.* TURN IGNITION OFF.
HARNESS
CONNECTOR.**
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TEST TC-4AREPAIRING - A/C SYSTEM PRESSURE SIGNAL LOW EXCEEDED
Perform TEST DTC Before Proceeding
FIG.1
FIG.2
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TEST TC-4AREPAIRING - A/C SYSTEM PRESSURE SIGNAL LOW EXCEEDED
Perform TEST DTC Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TURN A/C ON.
START TEST WITH THE DRB, READ IS THE A/C OUTPUT YES CONTINUE TEST
TC-4A. THE A/C OUTPUT VOLTAGE BELOW 0.2 TC-4A ON THE
VOLTAGE. VOLT? NEXT PAGE.
NO
USE THE SCHEMATIC AS REPAIR THE HARNESS
A GUIDE AND WIGGLE MONITOR THE DRB WAS THERE ANY A/C YES OR CONNECTOR THAT
A/C PRESSURE SENSOR DISPLAY. OUTPUT VOLTAGE CAUSED THE VOLTAGE
CONNECTOR & HARNESS. CHANGE? CHANGE.*
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
FOR ADDITIONAL TEST COMPLETE.*
INFORMATION ON
INTERMITTENT CODES.
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TEST TC-4ACONTINUED - REPAIRING - A/C SYSTEM PRESSURE SIGNAL LOW EXCEEDED
FIG.1
FIG.2
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TEST TC-4ACONTINUED - REPAIRING - A/C SYSTEM PRESSURE SIGNAL LOW EXCEEDED
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST TC-4A DISCONNECT THE A/C
CONTINUED FROM PRESSURE SENSOR
THE PREVIOUS HARNESS
PAGE. CONNECTOR.**
USING A VOLTMETER, REPAIR THE 5-VOLT
MEASURE THE 5-VOLT IS THE VOLTAGE NO SUPPLY CIRCUIT FOR
SUPPLY CIRCUIT. ABOVE 4.9 VOLTS? AN OPEN OR SHORT
TO GROUND.*
FIG.1
YES
JUMPER THE A/C
PRESSURE SENSOR USING THE DRB, IS THE A/C OUTPUT YES REPLACE THE A/C
SIGNAL CKT.TO THE READ THE A/C VOLTAGE ABOVE PRESSURE SENSOR.*
5-VOLT REFERENCE OUTPUT VOLTAGE. 4.5 VOLTS?
CKT. FIG.1
NO
TURN IGNITION OFF. USING AN OHMMETER, REPAIR THE SENSOR
DISCONNECT THE ECM MEASURE THE A/C IS THE RESISTANCE YES SIGNAL CIRCUIT FOR
HARNESS PRESSURE SENSOR BELOW 5.0 OHMS? A SHORT TO
CONNECTORS.** SIGNAL CKT TO GND. GROUND.*
FIG.1
NO
USE AN OHMMETER IN SENSOR SIGNAL REPAIR THE SENSOR
THE FOLLOWING STEPS. CIRCUIT AND THE IS THE RESISTANCE YES SIGNAL CIRCUIT
MEASURE RESISTANCE SENSOR GROUND BELOW 5.0 OHMS? SHORTED TO THE
BETWEEN THE A/C CIRCUIT. SENSOR GROUND
PRESSURE... FIG.1 CIRCUIT.*
NO
MEASURE RESISTANCE
OF THE A/C IS THE RESISTANCE YES REPLACE THE ENGINE
PRESSURE SENSOR BELOW 5.0 OHMS? CONTROL MODULE.*
SIGNAL CIRCUIT.
FIG.2
NO
REPAIR THE OPEN
A/C PRESSURE
SENSOR SIGNAL
CIRCUIT.*
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TEST TC-5AREPAIRING - A/C SYSTEM PRESSURE SUPPLY HIGH EXCEEDED
Perform TEST DTC Before Proceeding
FIG.1
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TEST TC-5AREPAIRING - A/C SYSTEM PRESSURE SUPPLY HIGH EXCEEDED
Perform TEST DTC Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TURN IGNITION ON. DOES THE DRB
START TEST WITH THE DRB, DISPLAY "A/C YES CONTINUE TEST
TC-5A. ERASE CODES. SYSTEM PRESSURE TC-5A ON THE
SUPPLY HIGH NEXT PAGE.
TURN A/C ON. EXCEEDED"?
NO
WIGGLE THE A/C DOES THE DRB REPAIR THE
PRESSURE SENSOR MONITOR THE DRB DISPLAY "A/C YES CONNECTOR OR
CONNECTOR AND DISPLAY. SYSTEM PRESSURE HARNESS WIRES THAT
HARNESS WIRES. SUPPLY HIGH"? CAUSED THE CODE TO
SET.*
NO
AT THIS TIME THE USING THE
CONDITION REQUIRED SCHEMATIC AS A WERE ANY PROBLEMS YES REPAIR AS
TO SET THIS CODE GUIDE, INSPECT THE FOUND? NECESSARY.*
IS NOT PRESENT. WIRING AND
CONNECTORS.
NO
REFER TO GENERAL
INFORMATION 3.3.2
FOR ADDITIONAL TEST COMPLETE.*
INFORMATION ON
INTERMITTENT CODES. FIG.1
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TEST TC-5ACONTINUED - REPAIRING - A/C SYSTEM PRESSURE SUPPLY HIGH EXCEEDED
FIG.1
FIG.2
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