check engine CHRYSLER CARAVAN 2000 User Guide

TEST TC-2ACONTINUED - REPAIRING - A/C CONTROL OPEN CIRCUIT
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST TC-2A
CONTINUED FROM KEY OFF.
THE PREVIOUS REMOVE THE A/C
PAGE. CLUTCH RELAY.**
USING A VOLTMETER,
MEASURE THE DIESEL IS THE VOLTAGE NO REPAIR THE OPEN
TURN IGNITION ON. POWER RELAY OUTPUT ABOVE 10.0 VOLTS? DIESEL POWER RELAY
CIRCUIT. OUTPUT CIRCUIT.*
FIG.1
YES
KEY OFF. MEASURE THE
RESISTANCE BETWEEN IS THE RESISTANCE NO REPLACE THE A/C
USE AN OHMMETER IN A/C CLUTCH RELAY BELOW 100.0 OHMS? CLUTCH RELAY.*
THE FOLLOWING TERMINALS 85 AND 86.
STEPS. FIG.2
YES
MEASURE THE REPAIR THE A/C
DISCONNECT THE ECM RESISTANCE BETWEEN IS THE RESISTANCE YES CLUTCH RELAY
HARNESS GND AND THE A/C BELOW 5.0 OHMS? CONTROL CKT FOR A
CONNECTORS.** CLUTCH RELAY CONTROL SHORT TO GROUND.*
CKT (IN PDC). FIG.1
NO
MEASURE THE FROM THE RELAY TO
RESISTANCE OF THE THE ECM. IS THE RESISTANCE NO REPAIR OPEN A/C
A/C CLUTCH RELAY BELOW 5.0 OHMS? CLUTCH RELAY
CONTROL CIRCUIT... CONTROL CKT.*
FIG.3
YES
REPLACE THE ENGINE
CONTROL MODULE.*
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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-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-5ACONTINUED - REPAIRING - A/C SYSTEM PRESSURE SUPPLY HIGH EXCEEDED
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST TC-5A TURN IGNITION OFF.
CONTINUED FROM DISCONNECT THE A/C
THE PREVIOUS PRESSURE SENSOR
PAGE. HARNESS
CONNECTOR.**
DISCONNECT THE ECM REMOVE THE DIESEL
HARNESS POWER RELAY.**
CONNECTORS.**
WITH A JUMPER WIRE, KEY ON.
CONNECT DIESEL POWER
RELAY CONN. CAVITIES USE A VOLTMETER IN
30 AND 87 (IN PDC). THE FOLLOWING
FIG.1 STEP.
MEASURE THE A/C REPAIR THE A/C
PRESSURE SENSOR IS THE VOLTAGE YES PRESSURE SENSOR
SUPPLY CIRCUIT. ABOVE 1.0 VOLT? SUPPLY CIRCUIT FOR
A SHORT TO
FIG.2 VOLTAGE.*
NO
REPLACE THE ENGINE
CONTROL MODULE.*
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TEST TC-6ACONTINUED - REPAIRING - A/C SYSTEM PRESSURE SUPPLY LOW EXCEEDED
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST TC-6A KEY OFF.
CONTINUED FROM DISCONNECT THE A/C
THE PREVIOUS PRESSURE SENSOR
PAGE. HARNESS
CONNECTOR.**
WITH THE DRB, IS THE A/C
MONITOR THE A/C PRESSURE SUPPLY YES REPLACE THE A/C
TURN IGNITION ON. PRESSURE SENSOR VOLTAGE ABOVE 4.0 PRESSURE SENSOR.*
SUPPLY VOLTAGE. VOLTS?
NO
KEY OFF.
DISCONNECT THE ECM USE AN OHMMETER IN
HARNESS THE FOLLOWING
CONNECTORS.** STEPS.
MEASURE THE A/C REPAIR THE A/C
PRESSURE SENSOR IS THE RESISTANCE YES PRESSURE SENSOR
5-VOLT SUPPLY BELOW 5.0 OHMS? SUPPLY CIRCUIT FOR
CIRCUIT TO GROUND. A SHORT TO
FIG.1 GROUND.*
NO
MEASURE THE A/C REPAIR THE A/C
PRESSURE SENSOR IS THE RESISTANCE YES PRESSURE SENSOR
5-VOLT SUPPLY CKT BELOW 5.0 OHMS? SUPPLY CIRCUIT FOR
TO SENSOR GROUND. A SHORT TO SENSOR
FIG.1 GROUND.*
NO
REPLACE THE ENGINE
CONTROL MODULE.*
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TEST TC-7ACONTINUED - REPAIRING - ACCELERATOR PEDAL SENSOR TROUBLE CODES
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST TC-7A
CONTINUED FROM RECONNECT ALL
THE PREVIOUS CONNECTORS.
PAGE.
DOES THE DRB
TEST DRIVE THE USING THE DRB, DISPLAY ANY YES REPLACE THE ENGINE
VEHICLE. READ ENGINE ACCELERATOR PEDAL CONTROL MODULE.*
TROUBLE CODES. CODE?
NO
TEST COMPLETE.
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TEST TC-7BREPAIRING - ACCELERATOR PEDAL SENSOR TROUBLE CODES
Perform TEST TC-7A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
WITH JUMPER STILL DOES THE DRB DISPLAY REPAIR THE OPEN
START TEST CONNECTED TO CAVITY CHANGE BETWEEN YES SENSOR GROUND.
TC-7B. 5, TAP THE OTHER END "IDLE" TO "ABOVE IF OK,
OF THE JUMPER TO IDLE" WHEN TAPPING REPLACE THE ECM*
CHASSIS GROUND. THE JUMPER WIRE?
NO
USING A VOLTMETER, REPAIR THE LOW
MEASURE THE LOW IS THE VOLTAGE YES IDLE POSITION
IDLE POSITION ABOVE 5.5 VOLTS? SENSE CIRCUIT FOR
SENSE CKT. A SHORT TO
FIG.1 VOLTAGE.*
NO
TURN IGNITION OFF. USING AN OHMMETER, REPAIR THE LOW
MEASURE BETWEEN IS THE RESISTANCE YES IDLE POSITION
DISCONNECT THE ECM GROUND AND THE LOW BELOW 5.0 OHMS? SENSE CIRCUIT FOR
HARNESS IDLE POSITION A SHORT TO
CONNECTORS.** SENSE CKT. FIG.1 GROUND.*
NO
USING AN OHMMETER,
MEASURE THE LOW IS THE RESISTANCE NO REPAIR THE OPEN
IDLE POSITION BELOW 5.0 OHMS? LOW IDLE POSITION
SENSE CKT. SENSE CIRCUIT.*
FIG.2
YES
REPLACE THE ENGINE
CONTROL MODULE.*
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TEST TC-7CREPAIRING - ACCELERATOR PEDAL SENSOR TROUBLE CODES
Perform TEST TC-7A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
START TEST DISCONNECT THE ECM
TC-7C. TURN IGNITION OFF. HARNESS
CONNECTORS.**
MEASURE BETWEEN REPAIR THE 5-VOLT
USE AN OHMMETER IN GROUND AND THE IS THE RESISTANCE YES SUPPLY CIRCUIT FOR
THE FOLLOWING 5-VOLT SUPPLY CKT. BELOW 5.0 OHMS? A SHORT TO
STEPS. GROUND.*
FIG.1
NO
EACH GROUND CIRCUIT REPAIR THE 5-VOLT
MEASURE BETWEEN AT ACCEL PEDAL IS THE RESISTANCE YES SUPPLY CIRCUIT FOR
THE 5-VOLT SUPPLY SENSOR HARNESS CONN BELOW 5.0 OHMS? A SHORT TO SENSOR
CIRCUIT AND... CAVITIES 3 AND 8. GROUND.*
FIG.1
NO
WITH A JUMPER WIRE,
REMOVE THE DIESEL CONNECT DIESEL POWER
POWER RELAY.** RELAY CONN. CAVITIES
30 AND 87 (IN PDC).
FIG.2
USING A VOLTMETER, REPAIR THE 5-VOLT
MEASURE THE 5-VOLT IS THE VOLTAGE YES SUPPLY CIRCUIT FOR
TURN IGNITION ON. SUPPLY CKT. ABOVE 1.0 VOLT? A SHORT TO
VOLTAGE.*
FIG.1
NO
USING AN OHMMETER,
MEASURE THE IS THE RESISTANCE NO REPAIR THE OPEN
TURN IGNITION OFF. RESISTANCE OF THE BELOW 5.0 OHMS? 5-VOLT SUPPLY
5-VOLT SUPPLY CKT. CIRCUIT.*
FIG.3
YES
REPLACE THE ENGINE
CONTROL MODULE.*
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TEST TC-14AREPAIRING - BATTERY VOLTAGE SRC HIGH EXCEEDED
Perform TEST DTC Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
INCREASE ENGINE REPAIR CHARGING
START TEST SPEED TO 2000 RPM. IS THE VOLTAGE YES SYSTEM FOR
TC-14A. MEASURE THE ABOVE 17.0 VOLTS? OVERCHARGING
VOLTAGE AT THE CONDITION.*
BATTERY.
NO
NOTE: PERFORM THE USE THE SCHEMATIC AS REPAIR CHARGING
FOLLOWING STEP A GUIDE AND WIGGLE IS THE VOLTAGE YES SYSTEM FOR
WITH THE ENGINE THE ALTERNATOR ABOVE 17.0 VOLTS? OVERCHARGING
SPEED AT 2000 RPM. CONNECTOR & HARNESS. CONDITION.*
NO
USING THE DRB,
ERASE CODES. RUN USING THE DRB, DOES THE DRB YES REPLACE THE ENGINE
THE ENGINE AT IDLE READ CODES. DISPLAY "BATTERY CONTROL MODULE.*
AND 2500 RPM FOR VOLTAGE HIGH"?
SEVERAL MINUTES.
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.1 CONNECTORS.
NO
REFER TO GENERAL
INFORMATION 3.3.2
FOR ADDITIONAL TEST COMPLETE.*
INFORMATION ON
INTERMITTENT CODES.
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TEST TC-15ACONTINUED - REPAIRING - TURBOCHARGER BOOST SENSOR SIGNAL HIGH
EXCEEDED
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST TC-15A
CONTINUED FROM DISCONNECT THE
THE PREVIOUS PRESSURE
PAGE. SENSOR
KEY ON. USING A THE BOOST PRESSURE
VOLTMETER, MEASURE SENSOR 5-VOLT IS THE VOLTAGE NO CONTINUE TEST
THE VOLTAGE SUPPLY CIRCUIT AND ABOVE 5.2 VOLTS? TC-15A ON THE
BETWEEN... GROUND. NEXT PAGE.
FIG.1
YES
KEY OFF.
DISCONNECT THE ECM REMOVE THE DIESEL
HARNESS POWER RELAY.**
CONNECTORS.**
WITH A JUMPER WIRE, TURN IGNITION ON.
CONNECT DIESEL POWER
RELAY CONN. CAVITIES USE A VOLTMETER IN
30 AND 87 (IN PDC). THE FOLLOWING
FIG.1 STEP.
MEASURE THE 5-VOLT
SUPPLY CKT AT THE IS THE VOLTAGE YES REPAIR THE 5-VOLT
BOOST PRESSURE ABOVE 1.0 VOLT? SUPPLY CKT FOR A
SENSOR HARNESS SHORT TO VOLTAGE.*
CONNECTOR. FIG.2
NO
REPLACE THE ENGINE
CONTROL MODULE.* TURN IGNITION OFF.
BOOST
HARNESS
CONNECTOR.**
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