Page 139 of 436
TEST TC-34ACONTINUED - REPAIRING - EGR SHORT CIRCUIT
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
KEY ON.
USING THE DRB,
ERASE CODES.USING THE DRB
DISPLAY ECM CODES.DOES THE DRB DISPLAY
``EGR SHORT
CIRCUIT''?
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Page 141 of 436
TEST TC-35AREPAIRING - ENGINE SPEED SENSOR DYNAMIC PLAUSIBILITY
Perform TEST DTC Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
START TEST ATTEMPT TO START DOES THE ENGINE NO CONTINUE TEST
TC-35A. AND IDLE THE START AND IDLE? TC-35A ON THE
ENGINE. NEXT PAGE.
YES
USE THE SCHEMATIC AS DOES THE DRB REPAIR THE HARNESS
WITH THE ENGINE A GUIDE AND WIGGLE DISPLAY "ENGINE YES OR CONNECTOR THAT
STILL RUNNING... THE ENGINE SPEED SPEED SENSOR CAUSED THE CODE TO
SENSOR CONNECTOR & DYNAMIC SET.*
HARNESS. FIG.1 PLAUSIBILITY"?
NO
AT THIS TIME, THE USING THE SCHEMATIC
CONDITION REQUIRED AS A GUIDE, INSPECT WERE ANY PROBLEMS REPAIR AS
TO SET THE CODE IS THE WIRING AND FOUND? NECESSARY.*
NOT PRESENT. CONNECTORS. YES
FIG.2 FIG.1
NO
REFER TO GENERAL
INFORMATION 3.3.2 YES
FOR ADDITIONAL TEST COMPLETE.*
INFORMATION ON
INTERMITTENT CODES.
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Page 145 of 436

TEST TC-36AREPAIRING - ENGINE SPEED SENSOR OVERSPEED RECOGNITION
Perform TEST DTC Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
NOTE: THIS CODE
START TEST INDICATES THE ENGINE
TC-36A. SPEED SENSOR HAS
SEEN AN ENGINE SPEED
OF ABOVE 5400 RPM.
USING THE DRB,
CHECK FOR OTHER ARE ANY OTHER YES REPAIR OTHER CODES
ENGINE SPEED CODES SET? FIRST.*
SENSOR CODES.
NO
CHECK ENGINE SPEED
WITH THE DRB, SENSOR WIRING FOR WERE ANY PROBLEMS YES REPAIR AS
ERASE THE CODE. INCORRECT ROUTING FOUND? NECESSARY.*
AND CONNECTIONS
WHICH MAY CAUSE EMI.
NO
DOES THE DRB
TEST DRIVE WITH THE DRB, READ DISPLAY "ENGINE NO
VEHICLE. TROUBLE CODES. SPEED SENSOR TEST COMPLETED.*
OVERSPEED
RECOGNITION"?
YES
TEST DRIVE THE DOES THE DRB
REPLACE THE ENGINE VEHICLE. WITH THE DISPLAY "ENGINE NO
SPEED SENSOR. DRB, READ TROUBLE SPEED SENSOR TEST COMPLETED.*
CODES. OVERSPEED
RECOGNITION"?
YES
REPLACE THE ENGINE
CONTROL MODULE.*
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TEST TC-38AREPAIRING - ENGINE SPEED SENSOR STATIC PLAUSIBILITY
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
START TEST ATTEMPT TO START DOES THE ENGINE NO CONTINUE TEST
TC-38A. AND IDLE THE START AND IDLE? TC-38A ON THE
ENGINE. NEXT PAGE.
YES
USE THE SCHEMATIC AS DOES THE DRB REPAIR THE HARNESS
WITH THE ENGINE A GUIDE AND WIGGLE DISPLAY "ENGINE YES OR CONNECTOR THAT
STILL RUNNING... THE ENGINE SPEED SPEED SENSOR CAUSED THE CODE TO
SENSOR CONNECTOR & STATIC SET.*
HARNESS. FIG.1 PLAUSIBILITY"?
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 167 of 436

TEST TC-43AREPAIRING - FUEL QUANTITY ACTUATOR NEG. GOVERNOR DEVIATION COLD
Perform TEST DTC Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
START TEST USING THE DRB,
TC-43A. ERASE CODES.
TURN IGNITION OFF. DOES THE DRB
WAIT 10 SECONDS. WITH THE DRB, READ DISPLAY "FUEL YES CONTINUE TEST
ATTEMPT TO START CODES. QUANTITY ACTUATOR TC-43A ON THE
AND IDLE THE NEG. DEVIATION NEXT PAGE.
ENGINE. COLD"?
NO
USING THE SCHEMATIC, DOES THE DRB REPAIR THE HARNESS
WIGGLE THE FUEL DISPLAY "FUEL YES OR CONNECTOR THAT
INJECTION PUMP QUANTITY ACTUATOR CAUSED THE TROUBLE
CONNECTOR & HARNESS. NEG. DEVIATION CODE TO SET.*
FIG.1 COLD"?
NO
AT THIS TIME, THE USING A SCHEMATIC
CONDITION REQUIRED AS A GUIDE, WERE ANY PROBLEMS YES REPAIR AS
TO SET THE CODE IS INSPECT THE WIRING FOUND? NECESSARY.*
NOT PRESENT. AND CONNECTORS.
FIG.2
NO
REFER TO GENERAL
INFORMATION 3.3.2 YES
FOR ADDITIONAL TEST COMPLETE.*
INFORMATION ON
INTERMITTENT CODES.
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Page 171 of 436
TEST TC-44AREPAIRING - FUEL QUANTITY ACTUATOR NEG. GOVERNOR DEVIATION WARM
Perform TEST DTC Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
START TEST USING THE DRB,
TC-44A. ERASE CODES.
START THE ENGINE.
VARY THE ENGINE MONITOR THE DRB DOES THE DRB YES CONTINUE TEST
SPEED FROM IDLE TO DISPLAY. DISPLAY THIS CODE? TC-44A ON THE
3500 RPM SEVERALNEXT PAGE.
TIMES.
NO
AT THIS TIME, THE USING THE SCHEMATIC
CONDITION REQUIRED AS A GUIDE, INSPECT WERE ANY PROBLEMS YES REPAIR AS
TO SET THE CODE IS THE WIRING AND FOUND? NECESSARY.*
NOT PRESENT. CONNECTORS.
FIG.1 FIG.2
NO
REFER TO GENERAL
INFORMATION 3.3.2
FOR ADDITIONAL TEST COMPLETE.*
INFORMATION ON
INTERMITTENT CODES.
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Page 175 of 436
TEST TC-45AREPAIRING - FUEL QUANTITY ACTUATOR POS. GOVERNOR DEVIATION COLD
Perform TEST DTC Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
START TEST USING THE DRB,
TC-45A. ERASE CODES.
START THE ENGINE.
VARY THE ENGINE MONITOR THE DRB DOES THE DRB YES CONTINUE TEST
SPEED FROM IDLE TO DISPLAY. DISPLAY THIS CODE? TC-45A ON THE
3500 RPM SEVERALNEXT PAGE.
TIMES.
NO
AT THIS TIME, THE USING THE SCHEMATIC
CONDITION REQUIRED AS A GUIDE, INSPECT WERE ANY PROBLEMS YES REPAIR AS
TO SET THE CODE IS THE WIRING AND FOUND? NECESSARY.*
NOT PRESENT. CONNECTORS.
FIG.1 FIG.2
NO
REFER TO GENERAL
INFORMATION 3.3.2
FOR ADDITIONAL TEST COMPLETE.*
INFORMATION ON
INTERMITTENT CODES.
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Page 177 of 436
TEST TC-45ACONTINUED - REPAIRING - FUEL QUANTITY ACTUATOR POS. GOVERNOR
DEVIATION COLD
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
CHECK FOR RECENT
TEST TC-45A REPLACEMENT OR
CONTINUED FROM MOVEMENT OF THE
PREVIOUS PAGE. FUEL INJECTION
PUMP ASSEMBLY.
NOTE: AN
IMPROPERLY TIMED WAS THE FUEL YES RESET FUEL
FUEL INJECTION INJECTION PUMP INJECTION PUMP TO
PUMP WILL CAUSE MOVED OR REPLACED? ENGINE TIMING.
THIS CODE TO SET.
NO
INSPECT THE FUEL
SYSTEM FOR AT THE FUEL TANK WAS A RESTRICTION YES REPAIR AS
RESTRICTIONS AT THE MODULE. FOUND? NECESSARY.*
DELIVERY LINES,
FILTER AND....
NO
REPLACE THE FUEL START AND OPERATE
INJECTION PUMP THE ENGINE BETWEEN DOES THE DRB YES REPLACE THE ENGINE
ASSEMBLY. IDLE AND 3500 RPM DISPLAY THIS CODE? CONTROL MODULE.*
USING THE DRB, WHILE MONITORING
ERASE CODES. THE DRB DISPLAY.
NO
TEST COMPLETE.*
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