Page 101 of 436

TEST TC-21AREPAIRING - CLUTCH SIGNAL PLAUSIBILITY
Perform TEST DTC Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
START TEST
TC-21A. TURN IGNITION ON.
WITH THE DRB, WHILE OBSERVING
MONITOR THE CLUTCH THE DISPLAY, PRESS DID THE DRB CHANGE NO CONTINUE TEST
PEDAL SWITCH AND RELEASE THE FROM "RELEASED" TO TC-21A ON THE
INPUT. CLUTCH PEDAL "PRESSED"? NEXT PAGE.
SEVERAL TIMES.
YES
THE CONDITION TO SET USING THE SCHEMATIC
THE TROUBLE CODE IS AS A GUIDE, INSPECT WERE ANY PROBLEMS YES REPAIR AS
NOT PRESENT. THE WIRING AND FOUND? NECESSARY.*
CONNECTORS.
FIG.1 FIG.2
NO
WIGGLE THE WIRING DID THE DRB REPAIR AS
HARNESS FROM THE DISPLAY CHANGE YES NECESSARY WHERE
CLUTCH PEDAL SWITCH FROM "RELEASED" TO THE WIGGLING
TO THE ENGINE "PRESSED"? CAUSED THE SWITCH
CONTROL MODULE.STATUS TO CHANGE.*
NO
REFER TO GENERAL
INFORMATION 3.3.2 YES
FOR ADDITIONAL TEST COMPLETED.*
INFORMATION ON
INTERMITTENT CODES.
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TEST TC-81AREPAIRING - TEMPERATURE OF ENGINE COOLANT SRC HIGH EXCEEDED
Perform TEST DTC Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
WITH THE DRB, READ IS THE ENGINE
START TEST THE ENGINE COOLANT COOLANT YES CONTINUE TEST
TC-81A. TEMPERATURE SENSOR TEMPERATURE SENSOR TC-81A ON THE
VOLTAGE. VOLTAGE ABOVE 4.7 NEXT PAGE.
VOLTS?
NO
USE THE SCHEMATIC WAS THERE ANY REPAIR THE HARNESS
AS A GUIDE AND MONITOR THE DRB ENGINE COOLANT YES OR CONNECTOR THAT
WIGGLE THE ECT DISPLAY. TEMPERATURE SENSOR CAUSED THE VOLTAGE
SENSOR CONNECTOR & VOLTAGE CHANGE? CHANGE.*
HARNESS. 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. FIG.2 WIRING AND
CONNECTORS.
NO
REFER TO GENERAL
INFOMATION 3.3.2 FOR YES
ADDITIONAL TEST COMPLETE.*
INFORMATION ON
INTERMITTENT CODES.
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Page 261 of 436

TEST TC-82AREPAIRING - TEMPERATURE OF ENGINE COOLANT SRC LOW EXCEEDED
Perform TEST DTC Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
WITH THE DRB, READ IS THE ENGINE
START TEST THE ENGINE COOLANT COOLANT YES CONTINUE TEST
TC-82A. TEMPERATURE SENSOR TEMPERATURE SENSOR TC-82A ON THE
VOLTAGE. VOLTAGE BELOW NEXT PAGE.
0.3 VOLT?
NO
USING THE SCHEMATIC, WAS THERE ANY REPAIR THE HARNESS
WIGGLE THE ENGINE MONITOR THE DRB ENGINE COOLANT YES OR CONNECTOR THAT
COOLANT TEMPERATURE DISPLAY. TEMPERATURE SENSOR CAUSED THE VOLTAGE
SENSOR CONNECTOR & VOLTAGE CHANGE? CHANGE.*
HARNESS. 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 YES
FOR ADDITIONAL TEST COMPLETE.*
INFORMATION ON
INTERMITTENT CODES.
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Page 397 of 436

TEST SC-6ACHECKING CRUISE INDICATOR OPERATION
Perform TEST SC-1A Before Proceeding
*Perform Verification TEST VER-3A. **Check connectors - Clean / repair as necessary.
NOTE: PERFORM TEST
START TEST SC-1A TO VERIFY
SC-6A. PROPER CRUISE
SWITCH OPERATION
BEFORE CONTINUING.
TURN IGNITION ON. MONITOR CRUISE DOES LAMP STATE CHECK CRUISE LAMP
WITH THE DRB SELECT LAMP STATE WHILE CHANGE FROM "ON" YES BULB, REPLACE AS
"BODY" "MIC" PRESSING CRUISE TO "OFF" WHEN NECESSARY. IF OK,
"MONITOR DISPLAY" ON/OFF BUTTON PRESSING THE REPLACE THE
THEN "CCD BUS INFO". SEVERAL TIMES. BUTTON? INSTRUMENT CLUSTER.*
NO
KEY OFF. KEY ON. CONNECT A
DISCONNECT THE ECM JUMPER WIRE BETWEEN IS THE SPEED YES REPLACE THE ENGINE
HARNESS ECM HARNESS CONTROL LAMP ON? CONTROL MODULE.*
CONNECTORS.** CONNECTOR CAVITY 30
AND GROUND. FIG.1
NO
KEY OFF. USING AN OHMMETER, REPAIR SHORT TO
DISCONNECT THE BCM MEASURE RESISTANCE IS THE RESISTANCE YES GROUND ON THE
HARNESS BETWEEN ECM HARNESS BELOW 5.0 OHMS? SPEED CONTROL LAMP
CONNECTORS.** CONNECTOR CAVITY 30 CONTROL CIRCUIT.*
AND GROUND. FIG.1
NO
USING AN OHMMETER
MEASURE THE SPEED IS THE RESISTANCE YES REPAIR OPEN SPEED
CONTROL LAMP ABOVE 5.0 OHMS? CONTROL LAMP
CONTROL CIRCUIT. CONTROL CIRCUIT.*
FIG.2
NO
REPLACE THE BODY
CONTROL MODULE.*
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TEST VER-3ASPEED CONTROL VERIFICATION
Inspect the vehicle to ensure that all engine components are connected. Reassemble and reconnect
all components as necessary.
If the engine control module has been changed, do the following:
1. If the vehicle is equipped with a factory theft alarm, start the vehicle at least 20 times so that
the alarm system may be activated when desired.
Connect the DRB to the data link connector and erase the codes.
Ensure no other speed control problems remain by doing the following:
1. Road test the vehicle at a speed above 35 mph.
2. Turn the speed control ON/OFF switch to the ON position.
3. Depress and release the SET switch. If the speed control did not engage, the repair is not
complete.*
4. Quickly depress and release the RESUME/ACCEL switch. If the vehicle speed did not increase
by 2 mph, the repair is not complete.*
5. Using caution, depress and release the brake pedal. If the speed control did not disengage, the
repair is not complete.*
6. Bring the vehicle speed back up to 35 mph.
7. Depress the RESUME/ACCEL switch. If the speed control did not resume the previously set
speed, the repair is not complete.*
8. Hold down the DECEL switch. If the vehicle did not decelerate, the repair is not complete.
9. Ensure the vehicle speed is greater than 35 mph and release the SET switch. If the vehicle did
not adjust and set a new vehicle speed, the repair is not complete.*
10. With Speed Control engaged, depress the ON/OFF switch. If the speed control did not
disengage, the repair is not complete.*
If the vehicle successfully passed all of the previous tests, the speed control system is now
functioning as designed. The repair is now complete.
*Check for Technical Service Bulletins that pertain to this speed control problem and then, if
necessary, return toDTC TEST.
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