CHRYSLER CARAVAN 2000 Service Manual

TEST NTC-2ACHECKING GLOW PLUG OPERATION
Perform TEST NTC-1A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
THE 2.5L DIESEL GLOW PLUG RELAY #1 GLOW PLUG RELAY #2
START TEST ENGINE UTILIZES SUPPLIES POWER TO SUPPLIES POWER TO
NTC-2A. TWO GLOW PLUG THE GLOW PLUGS IN THE GLOW PLUGS IN
RELAYS... CYLINDERS #1 & #4. CYLINDERS #2 & #3.
PERFORM THIS TEST
ON GLOW PLUG RELAY
#1 THEN REPEAT TURN IGNITION OFF.
TEST FOR GLOW PLUG
RELAY #2.
DISCONNECT EACH KEY ON. USING THE
GLOW PLUG HARNESS DRB, ACTUATE THE
CONNECTOR. GLOW PLUG RELAY.
USING A TEST
LIGHT, PROBE THE DOES THE TEST NO TEST NTC-2A
APPROPRIATE GLOW LIGHT FLASH ON AND CONTINUED ON
PLUG HARNESS CONN. OFF? THE NEXT PAGE.
FIG.1 AND 2
YES
GLOW PLUG CIRCUITRY
OK. REFER TO SERVICE
MANUAL TO CHECK GLOW TEST COMPLETE.*
PLUG OPERATION.
N
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B
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C
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TEST NTC-2ACONTINUED - CHECKING GLOW PLUG OPERATION
FIG.1
FIG.2
FIG.3
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C
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TEST NTC-2ACONTINUED - CHECKING GLOW PLUG OPERATION
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
REPAIR THE OPEN
FUSED B (+)
N
O
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U
B
L
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C
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D
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TEST NTC-3ACHECKING FUEL INJECTION PUMP CIRCUITS
Perform TEST NTC-1A Before Proceeding
FIG.1
FIG.2
N
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B
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C
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TEST NTC-3ACHECKING FUEL INJECTION PUMP CIRCUITS
Perform TEST NTC-1A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
THIS TEST SHOULD BE
START TEST PERFORMED BEFORE
NTC-3A. REPLACING THE ECM
DURING FAULT CODE
DIAGNOSTICS.
NOTE: THIS TEST DISCONNECT THE
CHECKS FOR SHORTED FUEL INJECTION
CIRCUITS INTERNAL TO PUMP 10-WAY
THE FUEL INJECTION HARNESS
PUMP ASSEMBLY. CONNECTOR.**
THESE MEASUREMENTS
USE AN OHMMETER ARE PERFORMED ON
FOR THE FOLLOWING THE FUEL INJECTION
MEASUREMENTS. PUMP CONNECTOR.
FIG.1
IS THE RESISTANCE
PERFORM RESISTANCE BELOW 100.0 OHMS YES REPLACE THE FUEL
MEASUREMENTS. FOR ANY OF THE INJECTION PUMP
MEASUREMENTS? ASSEMBLY.*
FIG.2
NO
TEST COMPLETED.
N
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TEST NTC-4ACHECKING THE PCM POWER AND GROUNDS
Perform TEST NTC-1A Before Proceeding
FIG.1
FIG.2
N
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B
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TEST NTC-4ACHECKING THE PCM POWER AND GROUNDS
Perform TEST NTC-1A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
NOTE: THE BATTERY
START TEST MUST BE FULLY
NTC-4A. CHARGED TO PERFORM
THIS TEST.
TURN IGNITION OFF. WITH AN OHMMETER,
DISCONNECT THE ECM MEASURE ECM IS THE RESISTANCE NO REPAIR THE OPEN
HARNESS HARNESS CONNECTOR BELOW 5.0 OHMS FOR GROUND CIRCUIT.*
CONNECTORS.** CAVITIES 1 AND 27 ALL MEASUREMENTS?
TO GROUND. FIG.1
YES
PROBE DIESEL POWER
USE A TEST LIGHT RELAY CONNECTOR DOES THE TEST NO REPAIR OPEN
IN THE FOLLOWING CAVITY (PDC) 3(30). LIGHT ILLUMINATE BATTERY SUPPLY TO
STEPS. BRIGHTLY? RELAY.
FIG.2
YES
REMOVE THE DIESEL 3(30) AND 5(87). DOES THE TEST
POWER RELAY. CONNECT WITH A TEST LIGHT, LIGHT ILLUMINATE NO REPAIR OPEN DIESEL
A JUMPER WIRE ACROSS PROBE ECM HARNESS BRIGHTLY FOR EACH POWER RELAY OUTPUT
RELAY CONNECTOR CONNECTOR CAVITIES CAVITY? CIRCUIT.*
(PDC) CAVITIES... 2 AND 28. FIG.2
YES
WITH A TEST LIGHT,
PROBE ECM HARNESS DOES THE TEST NO REPAIR THE OPEN
TURN IGNITION ON. CONNECTOR CAVITY 47. LIGHT ILLUMINATE FUSED IGNITION
BRIGHTLY? SWITCH CIRCUIT.*
FIG.1
YES
ECM GROUND
AND POWER
CIRCUITS ARE
OK. TEST
PASSED.
N
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TEST NTC-5ACHECKING ENGINE COOLANT SENSOR CALIBRATION AND RADIATOR FAN
OPERATION
Perform TEST NTC-1A Before ProceedingN
O
T
R
O
U
B
L
E
C
O
D
E
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TEST NTC-5ACHECKING ENGINE COOLANT SENSOR CALIBRATION AND RADIATOR FAN
OPERATION
Perform TEST NTC-1A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
NOTE: USE A TEMPERA-
TURE PROBE TO ENSURE
ENGINE TEMPERATURE
IS ACTUALLY BELOW
70*C (160*F).
N
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TEST NTC-6ACHECKING ACCELERATOR PEDAL POSITION SENSOR CALIBRATION
Perform TEST NTC-1A Before ProceedingN
O
T
R
O
U
B
L
E
C
O
D
E
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