Page 65 of 436

TEST TC-7CREPAIRING - ACCELERATOR PEDAL SENSOR TROUBLE CODES
Perform TEST TC-7A Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
START TEST DISCONNECT THE ECM
TC-7C. TURN IGNITION OFF. HARNESS
CONNECTORS.**
MEASURE BETWEEN REPAIR THE 5-VOLT
USE AN OHMMETER IN GROUND AND THE IS THE RESISTANCE YES SUPPLY CIRCUIT FOR
THE FOLLOWING 5-VOLT SUPPLY CKT. BELOW 5.0 OHMS? A SHORT TO
STEPS. GROUND.*
FIG.1
NO
EACH GROUND CIRCUIT REPAIR THE 5-VOLT
MEASURE BETWEEN AT ACCEL PEDAL IS THE RESISTANCE YES SUPPLY CIRCUIT FOR
THE 5-VOLT SUPPLY SENSOR HARNESS CONN BELOW 5.0 OHMS? A SHORT TO SENSOR
CIRCUIT AND... CAVITIES 3 AND 8. GROUND.*
FIG.1
NO
WITH A JUMPER WIRE,
REMOVE THE DIESEL CONNECT DIESEL POWER
POWER RELAY.** RELAY CONN. CAVITIES
30 AND 87 (IN PDC).
FIG.2
USING A VOLTMETER, REPAIR THE 5-VOLT
MEASURE THE 5-VOLT IS THE VOLTAGE YES SUPPLY CIRCUIT FOR
TURN IGNITION ON. SUPPLY CKT. ABOVE 1.0 VOLT? A SHORT TO
VOLTAGE.*
FIG.1
NO
USING AN OHMMETER,
MEASURE THE IS THE RESISTANCE NO REPAIR THE OPEN
TURN IGNITION OFF. RESISTANCE OF THE BELOW 5.0 OHMS? 5-VOLT SUPPLY
5-VOLT SUPPLY CKT. CIRCUIT.*
FIG.3
YES
REPLACE THE ENGINE
CONTROL MODULE.*
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Page 66 of 436
TEST TC-14AREPAIRING - BATTERY VOLTAGE SRC HIGH EXCEEDED
Perform TEST DTC Before Proceeding
FIG.1
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Page 67 of 436

TEST TC-14AREPAIRING - BATTERY VOLTAGE SRC HIGH EXCEEDED
Perform TEST DTC Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
INCREASE ENGINE REPAIR CHARGING
START TEST SPEED TO 2000 RPM. IS THE VOLTAGE YES SYSTEM FOR
TC-14A. MEASURE THE ABOVE 17.0 VOLTS? OVERCHARGING
VOLTAGE AT THE CONDITION.*
BATTERY.
NO
NOTE: PERFORM THE USE THE SCHEMATIC AS REPAIR CHARGING
FOLLOWING STEP A GUIDE AND WIGGLE IS THE VOLTAGE YES SYSTEM FOR
WITH THE ENGINE THE ALTERNATOR ABOVE 17.0 VOLTS? OVERCHARGING
SPEED AT 2000 RPM. CONNECTOR & HARNESS. CONDITION.*
NO
USING THE DRB,
ERASE CODES. RUN USING THE DRB, DOES THE DRB YES REPLACE THE ENGINE
THE ENGINE AT IDLE READ CODES. DISPLAY "BATTERY CONTROL MODULE.*
AND 2500 RPM FOR VOLTAGE HIGH"?
SEVERAL MINUTES.
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.1 CONNECTORS.
NO
REFER TO GENERAL
INFORMATION 3.3.2
FOR ADDITIONAL TEST COMPLETE.*
INFORMATION ON
INTERMITTENT CODES.
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Page 68 of 436
TEST TC-15AREPAIRING - TURBOCHARGER BOOST SENSOR SIGNAL HIGH EXCEEDED
Perform TEST DTC Before Proceeding
FIG.1
FIG.2
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Page 69 of 436
TEST TC-15AREPAIRING - TURBOCHARGER BOOST SENSOR SIGNAL HIGH EXCEEDED
Perform TEST DTC Before Proceeding
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TURN IGNITION ON.
START TEST WITH THE DRB, READ IS THE VOLTAGE YES CONTINUE TEST
TC-15A. THE BOOST PRESSURE ABOVE 4.5 VOLTS? TC-15A ON THE
SENSOR VOLTAGE. NEXT PAGE.
NO
USE THE SCHEMATIC AS REPAIR THE HARNESS
A GUIDE AND WIGGLE MONITOR THE DRB WAS THERE ANY YES OR CONNECTOR THAT
BOOST PRESSURE DISPLAY. BOOST PRESSURE CAUSED THE VOLTAGE
SENSOR CONNECTOR AND VOLTAGE CHANGE? CHANGE.*
HARNESS. FIG.1
NO
AT THIS TIME, THE USING THE
CONDITION TO SET SCHEMATIC AS A WERE ANY PROBLEMS YES REPAIR AS
THE CODE IS NOT GUIDE, INSPECT THE FOUND? NECESSARY.*
PRESENT. WIRING AND
FIG.2 CONNECTORS.
NO
REFER TO GENERAL
INFORMATION 3.3.2
FOR ADDITIONAL TEST COMPLETE.
INFORMATION ON
INTERMITTENT CODES.
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Page 70 of 436
TEST TC-15ACONTINUED - REPAIRING - TURBOCHARGER BOOST SENSOR SIGNAL HIGH
EXCEEDED
FIG.1
FIG.2
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Page 71 of 436
TEST TC-15ACONTINUED - REPAIRING - TURBOCHARGER BOOST SENSOR SIGNAL HIGH
EXCEEDED
*Perform Verification TEST VER-2A. **Check connectors - Clean / repair as necessary.
TEST TC-15A
CONTINUED FROM DISCONNECT THE
THE PREVIOUS PRESSURE
PAGE. SENSOR
KEY ON. USING A THE BOOST PRESSURE
VOLTMETER, MEASURE SENSOR 5-VOLT IS THE VOLTAGE NO CONTINUE TEST
THE VOLTAGE SUPPLY CIRCUIT AND ABOVE 5.2 VOLTS? TC-15A ON THE
BETWEEN... GROUND. NEXT PAGE.
FIG.1
YES
KEY OFF.
DISCONNECT THE ECM REMOVE THE DIESEL
HARNESS POWER RELAY.**
CONNECTORS.**
WITH A JUMPER WIRE, TURN IGNITION ON.
CONNECT DIESEL POWER
RELAY CONN. CAVITIES USE A VOLTMETER IN
30 AND 87 (IN PDC). THE FOLLOWING
FIG.1 STEP.
MEASURE THE 5-VOLT
SUPPLY CKT AT THE IS THE VOLTAGE YES REPAIR THE 5-VOLT
BOOST PRESSURE ABOVE 1.0 VOLT? SUPPLY CKT FOR A
SENSOR HARNESS SHORT TO VOLTAGE.*
CONNECTOR. FIG.2
NO
REPLACE THE ENGINE
CONTROL MODULE.* TURN IGNITION OFF.
BOOST
HARNESS
CONNECTOR.**
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Page 72 of 436
TEST TC-15ACONTINUED - REPAIRING - TURBOCHARGER BOOST SENSOR SIGNAL HIGH
EXCEEDED
FIG.1
FIG.2
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