Page 357 of 436

TEST NTC-10BCHECKING THE FUEL HEATER AND THE CRANKCASE VENT HEATER
Perform TEST NTC-10A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
START TEST
NTC-10B. TURN IGNITION OFF.
REPLACE FUSE #16.
NO
TURN IGNITION ON IS THE FUSE OPEN? TEST COMPLETE.*
AND INSPECT FUSE
#16.
YES
CONNECT A JUMPER
REMOVE FUEL HEATER WIRE ACROSS FUEL
RELAY. HEATER RELAY
CAVITIES 30 & 87
(IN PDC). FIG. 1
REPLACE FUSE #6 NO REPLACE THE FUEL
IS THE FUSE OPEN? HEATER RELAY.*
TURN IGNITION ON.
YES
KEY OFF. REPLACE FUSE #16 AND
TURN IGNITION ON. NO REPLACE THE FUEL
DISCONNECT THE IS THE FUSE OPEN? HEATER.*
FUEL HEATER INSPECT FUSE #16.
HARNESS CONNECTOR.
YES
KEY OFF. REPLACE FUSE #16 AND
DISCONNECT THE TURN IGNITION ON. NO REPLACE THE
CRANKCASE VENT IS THE FUSE OPEN? CRANKCASE VENT
HEATER HARNESS INSPECT FUSE #16. HEATER.*
CONNECTOR.
YES
REPAIR THE FUEL
HEATER RELAY
OUTPUT CIRCUIT FOR
A SHORT TO
GROUND.*
N
O
T
R
O
U
B
L
E
C
O
D
E
T
E
S
T
S
351
ProCarManuals.com
Page 361 of 436
TEST NTC-11ACONTINUED - CHECKING RADIATOR FAN OPERATION
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST NTC-11A
CONTINUED FROM
THE PREVIOUS TURN IGNITION OFF.
PAGE.
KEY ON. REPAIR SHORT TO
REMOVE RAD FAN DOES THE LEFT SIDE YES GROUND IN RAD FAN
RELAY #1.** USING THE DRB, RAD FAN CYCLE ON GROUND CKT. BETWEEN
ACTUATE LOW SPEED AND OFF? LEFT SIDE RAD FAN
RAD FAN. AND RELAY #1*
NO
KEY OFF. USE AN BETWEEN RAD FAN
OHMMETER IN THE RELAY #1 TERMINALS IS THE RESISTANCE YES REPLACE THE RAD
FOLLOWING STEPS. 30 AND 87. BELOW 5.0 OHMS? FAN RELAY #1.*
MEASURE THE
RESISTANCE... FIG.1
NO
DISCONNECT THE MEASURE RESISTANCE REPAIR THE SHORT
RIGHT SIDE RAD FAN BETWEEN RAD FAN IS THE RESISTANCE YES TO GROUND IN THE
HARNESS RELAY #1 HARNESS BELOW 5.0 OHMS? RAD FAN RELAY #3
CONNECTOR.** CONNECTOR CAVITY 5 OUTPUT CIRCUIT.*
AND GROUND. FIG.2
NO
REPLACE THE RIGHT
SIDE RADIATOR
FAN.*
N
O
T
R
O
U
B
L
E
C
O
D
E
T
E
S
T
S
355
ProCarManuals.com
Page 371 of 436

TEST NTC-11DCHECKING RADIATOR FAN OPERATION
Perform TEST NTC-11A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
START TEST STOP LOW SPEED FAN
NTC-11D. ACTUATION.
KEY OFF.
SUBSTITUTE THE RAD PERFORM THE DO BOTH FANS CYCLE YES REPLACE THE
FAN #1 RELAY WITH "LOW SPEED FAN" ON AND OFF? INITIAL RAD FAN #1
A KNOWN GOOD ACTUATOR TEST. RELAY.*
RELAY.
NO
DISCONNECT THE
DISCONNECT RAD FAN LEFT SIDE FAN
#1 RELAY HARNESS MOTOR HARNESS
CONNECTOR.** CONNECTOR.**
USING AN OHMMETER, REPAIR THE SHORT
MEASURE THE GROUND IS THE RESISTANCE YES TO GROUND BETWEEN
CKT AT CAVITY 8 TO BELOW 10.0 OHMS? THE LEFT SIDE
GROUND. MOTOR AND RAD FAN
FIG.1 #1 REKAY.
NO
DISCONNECT THE USING AN OHMMETER, REPAIR THE RIGHT
RIGHT SIDE FAN MEASURE CAVITY 5 IS THE RESISTANCE YES SIDE FAN SUPPLY
MOTOR HARNESS TO GROUND. BELOW 10.0 OHMS? CIRCUIT FOR A
CONNECTOR.** SHORT TO GROUND.*
FIG.1
NO
CHECK RIGHT SIDE IS ANYTHING
FAN MOTOR FOR PREVENTING THE FAN YES REPAIR AS
BINDING OR DEBRIS MOTOR FROM NECESSARY.
WHICH MAY PREVENT TURNING?
FAN OPERATION.
NO
REPLACE THE RIGHT
SIDE FAN MOTOR.*
N
O
T
R
O
U
B
L
E
C
O
D
E
T
E
S
T
S
365
ProCarManuals.com
Page 379 of 436

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.
S
P
E
E
D
C
O
N
T
R
O
L
T
E
S
T
S
373
ProCarManuals.com
Page 383 of 436

TEST SC-2ACHECKING SPEED CONTROL OPERATION
Perform TEST SC-1A Before Proceeding
*Perform Verification TEST VER-3A. **Check connectors - Clean / repair as necessary.
KEY OFF.
START TEST DISCONNECT THE
SC-2A. CLOCKSPRING
HARNESS
CONNECTOR.**
KEY ON. USING THE A JUMPER WIRE DID THE VOLTAGE
DRB, MONITOR THE ACROSS CLOCKSPRING CHANGE FROM YES REPLACE THE SPEED
CRUISE SWITCH HARNESS CONNECTOR APPROXIMATELY 5.0 CONTROL SWITCHES.*
VOLTAGE WHILE CAVITIES 3 AND 4. VOLTS TO 0 VOLTS?
CONNECTING... FIG.1
NO
KEY ON. PROBE THE REPAIR THE OPEN
USE A VOLTMETER IN CLOCKSPRING IS THE VOLTAGE YES SPEED CONTROL
THE FOLLOWING HARNESS CONNECTOR ABOVE 4.0 VOLTS? SWITCH GROUND
STEP. CAVITY 4. CIRCUIT.*
NO
KEY OFF. USING AN OHMMETER,
DISCONNECT THE ECM MEASURE THE SPEED IS THE RESISTANCE YES REPAIR THE OPEN
HARNESS CONTROL SWITCH ABOVE 5.0 OHMS? SPEED CONTROL
CONNECTORS.** CIRCUIT. SWITCH CIRCUIT.*
FIG.1
NO
REPLACE THE ENGINE
CONTROL MODULE.*
S
P
E
E
D
C
O
N
T
R
O
L
T
E
S
T
S
377
ProCarManuals.com
Page 387 of 436

TEST SC-3ACONTINUED - CHECKING SPEED CONTROL OPERATION
*Perform Verification TEST VER-3A. **Check connectors - Clean / repair as necessary.
TEST SC-3A KEY OFF.
CONTINUED FROM
THE PREVIOUS DISCONNECT THE BRAKE
PAGE. LAMP SWITCH HARNESS
CONNECTOR.**
USING A VOLTMETER, REPAIR THE BRAKE
PROBE BRAKE LAMP IS THE VOLTAGE NO LAMP SWITCH FUSED
SWITCH HARNESS ABOVE 9.0 VOLTS? BATTERY SUPPLY
CONNECTOR CAVITY 6. CIRCUIT FOR AN
FIG.1 OPEN.*
YES
CONNECT A JUMPER DOES THE DRB
BETWEEN BRAKE LAMP DISPLAY CHANGE YES ADJUST OR REPLACE
SWITCH HARNESS TURN IGNITION ON. FROM "RELEASED" TO THE BRAKE LAMP
CONNECTOR CAVITIES "PRESSED"? SWITCH.*
5 AND 6. FIG.1
NO
REMOVE THE JUMPER. AT THE BRAKE LAMP REPAIR THE PRIMARY
USING A VOLTMETER, SWITCH HARNESS IS THE VOLTAGE NO BRAKE SWITCH
MEASURE THE CONNECTOR CAVITY 5. BELOW 1.0 VOLT? SIGNAL CIRCUIT FOR
PRIMARY SWITCH A SHORT TO
SIGNAL CIRCUIT... FIG.1 VOLTAGE.*
YES
KEY OFF. USING AN OHMMETER, REPAIR THE PRIMARY
MEASURE RESISTANCE IS THE RESISTANCE NO BRAKE SWITCH
DISCONNECT THE ECM OF THE PRIMARY BRAKE BELOW 5.0 OHMS? SIGNAL CIRCUIT FOR
HARNESS SW SIGNAL CKT. AN OPEN.*
CONNECTORS.** FIG.2
YES
REPLACE THE ENGINE
CONTROL MODULE.*
S
P
E
E
D
C
O
N
T
R
O
L
T
E
S
T
S
381
ProCarManuals.com
Page 389 of 436
TEST SC-3BCHECKING SPEED CONTROL OPERATION
Perform TEST SC-3A Before Proceeding
*Perform Verification TEST VER-3A. **Check connectors - Clean / repair as necessary.
START TEST
SC-3B. TURN IGNITION OFF.
DISCONNECT THE KEY ON. USING A
BRAKE LAMP SWITCH VOLTMETER, MEASURE IS THE VOLTAGE NO CONTINUE TEST
HARNESS VOLTAGE AT CAVITY 1. ABOVE 9.0 VOLTS? SC-3B ON THE
CONNECTOR.** NEXT PAGE.
FIG.1
YES
USING A JUMPER WHILE MONITORING DID THE DRB
WIRE, CONNECT THE DRB. DISPLAY CHANGE YES ADJUST OR REPLACE
BRAKE LAMP SWITCH FROM "PRESSED" TO THE BRAKE LAMP
CONNECTOR CAVITY 1 "RELEASED"? SWITCH.*
TO GROUND... FIG.1
NO
USING AN OHMMETER,REPAIR THE OPEN
MEASURE THE IS THE RESISTANCE YES SECONDARY BRAKE
RESISTANCE BETWEEN ABOVE 10.0 OHMS? LAMP SWITCH GROUND
CONNECTOR CAVITY 2CIRCUIT.*
AND GROUND. FIG.1
NO
REPLACE THE ENGINE
CONTROL MODULE.*
S
P
E
E
D
C
O
N
T
R
O
L
T
E
S
T
S
383
ProCarManuals.com
Page 393 of 436

TEST SC-4ACHECKING SPEED CONTROL OPERATION
Perform TEST SC-1A Before Proceeding
*Perform Verification TEST VER-3A. **Check connectors - Clean / repair as necessary.
START TEST
SC-4A. TURN IGNITION OFF.
DISCONNECT THE USING AN OHMMETER, REPAIR OPEN IN
CLUTCH PEDAL MEASURE RESISTANCE IS THE RESISTANCE NO CLUTCH PEDAL
SWITCH HARNESS BETWEEN CLUTCH PEDAL BELOW 5.0 OHMS? SWITCH GROUND
CONNECTOR.** SW.CONNECTOR CAVITY CIRCUIT.*
2 AND GROUND. FIG.1
YES
KEY ON. WHILE THE CLUTCH PEDAL CHECK ADJUSTMENT OF
OBSERVING THE DRB, SWITCH HARNESS DID THE DRB CHANGE YES CLUTCH PEDAL SWITCH.
CONNECT A JUMPER CONNECTOR CAVITIES FROM "RELEASED" TO IF ADJUSTMENT IS OK,
WIRE ACROSS... 1 AND 2. "PRESSED"? REPLACE THE CLUTCH
FIG.1 PEDAL SWITCH.*
NO
KEY OFF. USING AN OHMMETER,
DISCONNECT THE ECM MEASURE THE IS THE RESISTANCE NO REPAIR OPEN CLUTCH
HARNESS RESISTANCE OF THE BELOW 5.0 OHMS? PEDAL SWITCH SENSE
CONNECTORS.** CLUTCH PEDAL SWITCH CIRCUIT.*
CIRCUIT. FIG.2
YES
ECM HARNESS REPAIR CLUTCH
USING AN OHMMETER CONNECTOR CAVITY IS THE RESISTANCE NO PEDAL SWITCH SENSE
MEASURE RESISTANCE 46 AND GROUND. ABOVE 5.0 OHMS? CIRCUIT FOR SHORT
BETWEEN... TO GROUND.*
FIG. 1
YES
REPLACE THE ENGINE
CONTROL MODULE.*
S
P
E
E
D
C
O
N
T
R
O
L
T
E
S
T
S
387
ProCarManuals.com