Page 311 of 436
TEST SK-5ACONTINUED - REPAIRING - TRANSPONDER COMMUNICATION FAILURE
*Perform Verification TEST VER-1A. **Check connectors - Clean / repair as necessary.
USING THE DRB,
ATTEMPT TO REPROGRAM
THE IGNITION KEY TO
THE SKIM.
SEE GENERAL
INFORMATION 8.4
USING THE DRB,
PROGRAM THE NEW
IGNITION KEY TO THE
SKIM.
SEE GENERAL
INFORMATION 8.4
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Page 315 of 436
TEST SK-6ACONTINUED - REPAIRING - TRANSPONDER CRC (CYCLIC REDUNDANCY CHECK)
FAILURE
*Perform Verification TEST VER-1A. **Check connectors - Clean / repair as necessary.
USING THE DRB,
ATTEMPT TO REPROGRAM
THE IGNITION KEY TO
THE SKIM.
SEE GENERAL
INFORMATION 8.4
USING THE DRB,
PROGRAM THE NEW
IGNITION KEY TO THE
SKIM.
SEE GENERAL
INFORMATION 8.4
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Page 319 of 436
TEST SK-7ACONTINUED - REPAIRING - TRANSPONDER ID MISMATCH
*Perform Verification TEST VER-1A. **Check connectors - Clean / repair as necessary.
USING THE DRB,
ATTEMPT TO REPROGRAM
THE IGNITION KEY TO
THE SKIM.
SEE GENERAL
INFORMATION 8.4
USING THE DRB,
PROGRAM THE NEW
IGNITION KEY TO THE
SKIM.
SEE GENERAL
INFORMATION 8.4
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Page 323 of 436
TEST SK-8ACONTINUED - REPAIRING - TRANSPONDER RESPONSE MISMATCH
*Perform Verification TEST VER-1A. **Check connectors - Clean / repair as necessary.
USING THE DRB,
ATTEMPT TO REPROGRAM
THE IGNITION KEY TO
THE SKIM.
SEE GENERAL
INFORMATION 8.4
USING THE DRB,
PROGRAM THE NEW
IGNITION KEY TO THE
SKIM.
SEE GENERAL
INFORMATION 8.4
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Page 331 of 436
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.
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Page 345 of 436

TEST NTC-8ACHECKING FUEL TEMPERATURE SENSOR CALIBRATION
Perform TEST NTC-1A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
KEY ON, ENGINE START AND IDLE THE
START TEST OFF. USING THE ENGINE UNTIL
NTC-8A. DRB, MONITOR THE ENGINE TEMPERATURE
ECT SENSOR INPUT. REACHES 70*C
(160*F).
NOTE: IF ENGINE TEMP USING THE DRB, IS THE FUEL
IS ABOVE 70*C READ THE FUEL TEMPERATURE NO REPLACE THE FUEL
(160*F), ALLOW THE TEMPERATURE SENSOR BETWEEN INJECTION PUMP
ENGINE TO COOL DOWN INPUT. 20*C (70*F) AND ASSEMBLY.*
TO 70*C (160*F). 50*C (120*F)?
YES
COMPARE THE ECT START THE ENGINE DOES THE FUEL TEMP
AND FUEL AND ALLOW IT TO SENSOR READING NO REPLACE THE FUEL
TEMPERATURE SENSOR REACH OPERATING INCREASE STEADILY INJECTION PUMP
INPUTS IN THE TEMPERATURE OF TO 38-60*C ASSEMBLY.*
FOLLOWING STEP. 80*C (195*F). (100-140*F)?
YES
FUEL
TEMPERATURE
SENSOR OPERATING
NORMALLY.
TEST PASSED.
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Page 349 of 436

TEST NTC-10ACHECKING THE FUEL HEATER AND THE CRANKCASE VENT HEATER
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TURN IGNITION OFF.
START TEST YES PERFORM TEST
NTC-10A. INSPECT FUSE #16 IS THE FUSE OPEN? NTC-10B.
IN THE PDC.
NO
USING A TEST
REMOVE THE FUEL LIGHT, PROBE RELAY IS THE TEST LIGHT NO REPLACE THE POWER
HEATER RELAY.** CONNECTOR CAVITY ON? DISTRIBUTION
30 (IN PDC). CENTER.*.
FIG. 1
YES
USING A TEST REPAIR THE FUSED
LIGHT, PROBE FUSED IS THE TEST LIGHT NO IGNITION SWITCH
TURN IGNITION ON. IGNITION SW OUTPUT ON? OUTPUT CIRCUIT FOR
CKT (IN PDC). AN OPEN OR SHORT
FIG. 1 TO GROUND.*
YES
WITH IGNITION RELAY CONNECTOR
STILL ON, CONNECT CAVITIES 85 AND 86 IS THE TEST LIGHT NO REPAIR THE OPEN
A TEST LIGHT (IN PDC). ON? RELAY GROUND
ACROSS...CIRCUIT.*
FIG. 1
YES
KEY OFF. DISCONNECT THE
FUEL HEATER AND CONTINUE TEST
INSTALL THE FUEL CRANKCASE VENT TURN IGNITION ON. NTC-10A ON THE
HEATER RELAY. HEATER HARNESS NEXT PAGE.
CONNECTORS.**
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Page 353 of 436
TEST NTC-10ACONTINUED - CHECKING THE FUEL HEATER AND THE CRANKCASE VENT HEATER
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
KEY ON. USING THE
DRB, SELECT9SEN-
SORS9AND READ THE
FUEL TEMP DEGREES.
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