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Symptom List:
P0300-MISFIRE DETECTED
P2113-MISFIRE CYLINDER #1
P2114-MISFIRE CYLINDER #2
P2115-MISFIRE CYLINDER #3
P2116-MISFIRE CYLINDER #4
P2117-MISFIRE CYLINDER #5
P2567-LEAKAGE CYLINDER #1
P2567-MISFIRE CYLINDER #1
P2568-LEAKAGE CYLINDER #2
P2568-MISFIRE CYLINDER #2
P2569-LEAKAGE CYLINDER #3
P2569-MISFIRE CYLINDER #3
P2570-LEAKAGE CYLINDER #4
P2570-MISFIRE CYLINDER #4
P2571-LEAKAGE CYLINDER #5
P2571-MISFIRE CYLINDER #5
P2573-GENERAL LEAKAGE
P2574-INJECTOR 1 INJECTION TIME ABOVE LIMIT
P2574-INJECTOR 1 INJECTION TIME BELOW LIMIT
P2575-INJECTOR 2 INJECTION TIME ABOVE LIMIT
P2575-INJECTOR 2 INJECTION TIME BELOW LIMIT
P2576-INJECTOR 3 INJECTION TIME ABOVE LIMIT
P2576-INJECTOR 3 INJECTION TIME BELOW LIMIT
P2577-INJECTOR 4 INJECTION TIME ABOVE LIMIT
P2577-INJECTOR 4 INJECTION TIME BELOW LIMIT
P2578-INJECTOR 5 INJECTION TIME ABOVE LIMIT
P2578-INJECTOR 5 INJECTION TIME BELOW LIMIT
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0300-MISFIRE DETECTED.
When Monitored and Set Condition:
P0300-MISFIRE DETECTED
When Monitored: With the engine running.
Set Condition: The ECM detects multiple misfires from one or more cylinders.
POSSIBLE CAUSES
CHECKING FOR FUEL LEAKAGE
CHECKING INJECTOR CLASSIFICATION
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POSSIBLE CAUSES
CORRECTION QUANTITY CHECK
CYLINDER SPEED CHECK
ENGINE COMPRESSION
INJECTOR LEAKAGE
INTERMITTENT CONDITION
TEST ACTION APPLICABILITY
1NOTE: If the ECM detects and stores a DTC, the ECM also stores the
engine/vehicle operating conditions under which the DTC was set. Some of
these conditions are displayed on the DRB at the same time the DTC is
displayed.
NOTE: Before erasing stored DTCs, record these conditions. Attempting to
duplicate these conditions may assist when checking for an active DTC.
With the DRBIIIt, erase ECM DTCs.
Test drive the vehicle and attempt to duplicate the problem.
With the DRB, read ECM DTC's.
Did this DTC set again?All
Ye s!Go To 2
No!Go To 8
2 Start and idle the engine for 5 minutes.
Turn the ignition off.
Inspect the fuel rail, fuel pressure sensor, fuel pressure solenoid and all fuel injectors
for evidence of fuel leakage.
Is there fuel leakage near any of the injectors or the fuel rail?All
Ye s!Refer to the Service Information to repair fuel leakage.
Perform ROAD TEST VERIFICATION - VER-2.
No!Go To 3
3 Turn the ignition off.
With the DRBIIIt, perform the Cylinder Compression Test.
Is the cylinder compression within specification for all cylinders?All
Ye s!Go To 4
No!Repair as necessary in accordance with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
4 Turn the ignition off.
Read and note the six-digit code located on the top of each injector.
Turn the ignition on.
With the DRBIIIt, check the current programmed injector classifications to the
six-digit codes from the vehicles current fuel injectors.
Are all of the Fuel Injectors classified correctly?All
Ye s!Go To 5
No!Using the DRB III, reset injectors to correct classification.
Perform ROAD TEST VERIFICATION - VER-2.
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P0300-MISFIRE DETECTED ÐContinued
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TEST ACTION APPLICABILITY
5 With the DRBIIIt, select System Test, Smooth Eng Run Check, then Correction
Quantity Check.
Perform this test at Idle, 2000 rpm and 3000 rpm.
NOTE: Readings per cylinder should be below 0.00450 mm
3/stroke for each
cylinder at each engine speed.
Did any of the cylinders exceed 0.00450 mm
3/stroke during this test?All
Ye s!Replace Fuel Injector of the cylinder(s) that had readings above
0.00450 mm
3/stroke.
Perform ROAD TEST VERIFICATION - VER-2.
No!Go To 6
6 With the DRBIIIt, select System Test, Smooth Eng Run Check, then Cylinder Speed
Check.
NOTE: Readings for all cylinders should be close to each other. Look for one
or two cylinders to differ high or low from the other cylinders.
Did any of the cylinders differ significantly from the majority of the other cylinders?All
Ye s!Replace Fuel Injector of the cylinder(s) that had readings signif-
icantly above or below the other fuel injectors.
Perform ROAD TEST VERIFICATION - VER-2.
No!Go To 7
7 Turn the ignition off.
Perform the INJECTOR LEAKAGE TEST in accordance with the Service Informa-
tion.
Were any problems found?All
Ye s!Repair or replace as necessary in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
No!Test Complete.
8WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?All
Ye s!Repair as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No!Test Complete.
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P0300-MISFIRE DETECTED ÐContinued
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Symptom:
P0500-WHEEL SPEED SENSOR PLAUS - CAN BUS MESSAGE FROM
ABS
When Monitored and Set Condition:
P0500-WHEEL SPEED SENSOR PLAUS - CAN BUS MESSAGE FROM ABS
When Monitored: With the ignition on.
Set Condition: The Boost Pressure Sensor Signal voltage exceeds 4.85 volts for at least 2
seconds.
POSSIBLE CAUSES
INTERMITTENT CONDITION
CHECK FOR RELATED CONTROLLER ANTILOCK BRAKES DTCS
CHECK FOR RELATED TRANSMISSION CONTROL MODULE DTCS
ENGINE CONTROL MODULE
TEST ACTION APPLICABILITY
1NOTE: If the ECM displays multiple CAN Bus related DTC's, check the CAN
Bus circuits at the ECM harness connector for proper connection before
continuing with this test.
NOTE: If the ECM detects and stores a DTC, the ECM also stores the
engine/vehicle operating conditions under which the DTC was set. Some of
these conditions are displayed on the DRB at the same time the DTC is
displayed.
NOTE: Before erasing stored DTCs, record these conditions. Attempting to
duplicate these conditions may assist when checking for an active DTC.
Turn the ignition on.
With the DRB, erase ECM DTCs.
Test drive the vehicle.
With the DRB, read the ECM DTC's.
Does the DRB display this DTC?All
Ye s!Go To 2
No!Go To 4
2 Turn the ignition on.
With the DRB, check for Controller Antilock Brakes DTCs.
NOTE: The ECM Receives vehicle speed messages via CAB Bus from the ABS
module. An interruption on the CAN Bus can cause this fault to set.
Are any related CAB DTCs present?All
Ye s!Refer to symptom list for problems related to CAB DTCs before
continuing.
Perform ROAD TEST VERIFICATION - VER-2.
No!Go To 3
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TEST ACTION APPLICABILITY
3NOTE: The TCM Receives vehicle speed messages via CAB Bus from the ABS
module. An interruption on the CAN Bus can cause this fault to set.
Turn the ignition on.
With the DRB, check the TCM for DTCs.
Are any ABS CAN Bus Message or Vehicle Speed related TCM DTCs present?All
Ye s!Replace the CAB in accordance with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No!Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
4WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?All
Ye s!Repair as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No!Test Complete.
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P0500-WHEEL SPEED SENSOR PLAUS - CAN BUS MESSAGE FROM ABS
Ð
Continued
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Symptom:
P0600-CAN DATA BUS - BUS CIRCUIT FAULT
When Monitored and Set Condition:
P0600-CAN DATA BUS - BUS CIRCUIT FAULT
When Monitored: With the ignition on.
Set Condition: The ECM detects an open, short to ground or short to voltage on the CAN
Bus circuit.
POSSIBLE CAUSES
ENGINE CONTROL MODULE
INTERMITTENT CONDITION
CAN BUS COMMUNICATION DTCS
CAN BUS CIRCUITS OPEN TO TCM
TEST ACTION APPLICABILITY
1NOTE: If the ECM detects and stores a DTC, the ECM also stores the
engine/vehicle operating conditions under which the DTC was set. Some of
these conditions are displayed on the DRB at the same time the DTC is
displayed.
NOTE: Before erasing stored DTCs, record these conditions. Attempting to
duplicate these conditions may assist when checking for an active DTC.
Turn the ignition on.
With the DRBIIIt, erase the ECM DTCs.
Test drive the vehicle.
With the DRBIIIt, read the ECM DTCs.
Did this DTC set again?All
Ye s!Go To 2
No!Go To 4
2 With the DRBIIIt, read the active and stored DTCs for all modules that use CAN Bus
communication.
NOTE: Due to capabilities of certain controllers that use the CAN Bus, not
all modules report CAN Bus DTCs.
NOTE: If a total CAN Bus failure transpires, there will be multiple CAN Bus
DTCs present in many modules. If the other modules are reporting Engine
CAN Bus message faults or DTC's related to ECM CAN messages ONLY,
answer No for the following question.
Are other modules reporting active or stored CAN Bus communication DTCs?All
Ye s!Refer to symptom list for problems related to CAN Bus Failure.
Perform BODY VERIFICATION TEST - VER 1.
No!Go To 3
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TEST ACTION APPLICABILITY
3 Turn the ignition off to the lock position.
Disconnect the TCM C2 harness connector.
Disconnect the ECM harness connector.
NOTE: Check connectors - Clean/repair as necessary.
Measure the resistance of both the CAN C Bus (+) circuit and the CAN C Bus (-)
circuit between the TCM C2 harness connector and ECM harness connector.
Is the resistance below 10.0 ohms for each measurement?All
Ye s!Replace the Engine Control Module in accordance with the
Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No!Repair the CAN C Bus (+) and/or CAN C Bus (-) circuit for an
open.
Perform BODY VERIFICATION TEST - VER 1.
4WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?All
Ye s!Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No!Test Complete.
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P0600-CAN DATA BUS - BUS CIRCUIT FAULT ÐContinued
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Symptom List:
P1222-ACC PEDAL POSITION SENSOR 1 CKT PLAUSIBILITY
P1222-ACC PEDAL POSITION SENSOR 1 CKT SIGNAL VOLTAGE
TOO HIGH
P1222-ACC PEDAL POSITION SENSOR 1 CKT SIGNAL VOLTAGE
TOO LOW
P1234-ACC PEDAL POSITION SENSOR 2 CIRCUIT PLAUSIBILITY
P1234-ACC PEDAL POSITION SENSOR 2 CKT SIGNAL VOLTAGE
TOO HIGH
P1234-ACC PEDAL POSITION SENSOR 2 CKT SIGNAL VOLTAGE
TOO LOW
P2327-APP SENSOR PLAUSIBILITY
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P1222-ACC PEDAL POSITION
SENSOR 1 CKT PLAUSIBILITY.
POSSIBLE CAUSES
ACCELERATOR PEDAL POSITION SENSOR
ECM - APP SENSOR 1 5-VOLT SUPPLY CIRCUIT
SENSOR GROUND OPEN (APP SENSOR)
INTERMITTENT CONDITION
APP SENSOR 5-VOLT SUPPLY CIRCUIT OPEN
APP SENSOR SIGNAL CIRCUIT OPEN
APP SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO SENSOR GROUND
APP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
APP SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
VERIFY APP SENSOR OPERATION
APP SENSOR SIGNAL CIRCUIT SHORTED TO THE SENSOR GROUND CIRCUIT
APP SENSOR 5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
ECM - SENSOR GROUND OPEN
APP SENSOR CIRCUIT SHORTED TO VOLTAGE
APP SENSOR GROUND CIRCUIT SHORTED TO VOLTAGE
ECM - APP SENSOR SIGNAL CIRCUIT
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