2006 MERCEDES-BENZ SPRINTER heater

TABLE OF CONTENTS - Continued
P2032-O2 SENSOR PLAUSIBILITY.......................................134
P2032-O2 SENSOR PLAUSIBILITY.......................................134
P2057-O2 SENSOR SIGNAL CIRCUIT SIGNAL VOLTAGE TOO HIGH...........134
P2058-O2 SENSOR SIGNAL CIRCUIT SIGNAL VOLTAGE TOO HIGH...........134
P2059-O2 SENSOR SIGNAL CIRCUIT SIGNAL VOLTAGE TOO HIGH...........134
P2090-O2 SENSOR PLAUSIBILITY.......................................134
P2090-O2 SENSOR SIGNAL FAULT.......................................134
P2091-O2 SENSOR LOW O2 CONCENTRATION............................134
P2091-O2 SENSOR SIGNAL PLAUSIBILITY................................134
P2195-O2 SENSOR HEATER CIRCUIT FAULT..............................134
P2353-O2 SENSOR PLAUSIBILITY.......................................134
P2366-O2 CIRCUIT FAULT..............................................134
P2034-O2 SENSOR CIRCUIT CALIBRATION VALUE TOO HIGH...............138
P2034-O2 SENSOR CIRCUIT CALIBRATION VALUE TOO LOW................138
P2036-O2 SENSOR CIRCUIT CALIBRATION VALUE TOO HIGH...............138
P2036-O2 SENSOR CIRCUIT CALIBRATION VALUE TOO LOW................138
P2038-O2 SENSOR CIRCUIT CALIBRATION VALUE TOO HIGH...............138
P2038-O2 SENSOR CIRCUIT CALIBRATION VALUE TOO LOW................138
P2043-CAMSHAFT POSITION SENSOR CIRCUIT OPEN CIRCUIT.............140
P2043-CAMSHAFT POSITION SENSOR CIRCUIT OPEN OR SHORT CIRCUIT . . .140
P2045-CRANKSHAFT POSITION SENSOR CIRCUIT LOST SIGNAL............146
P2045-CRANKSHAFT POSITION SENSOR CIRCUIT SIGNAL PLAUSIBILITY.....146
P2322-CRANKSHAFT POSITION SENSOR PLAUSIBILITY....................146
P2343-CKP PLAUSIBILITY...............................................146
P2062-ENGINE OIL SENSOR MONITORING ERROR........................149
P2066-MASS AIR FLOW SENSOR PLAUSIBILITY...........................150
P2355-EGR FLOW RATE IS TOO HIGH....................................150
P2355-EGR FLOW RATE IS TOO LOW....................................150
P2066-MASS AIR FLOW SENSOR PLAUSIBILITY AIR MASS TOO HIGH........153
P2066-MASS AIR FLOW SENSOR PLAUSIBILITY AIR MASS TOO LOW.........153
P2087-INTAKE PRESSURE SENSOR INTAKE RESTRICTION.................156
P2100-FUEL PUMP RELAY CIRCUIT OPEN CIRCUIT........................157
P2100-FUEL PUMP RELAY CIRCUIT SHORTED TO GROUND.................157
P2100-FUEL PUMP RELAY CIRCUIT SHORTED TO VOLTAGE................159
P2100-FUEL PUMP RELAY EXCESSIVE CURRENT..........................159
P2104-STARTER RELAY CIRCUIT SHORT CIRCUIT.........................161
P2152-STARTER RELAY CIRCUIT SHORT TO GROUND.....................161
P2153-STARTER RELAY CIRCUIT OPEN OR SHORTED TO VOLTAGE.........161
P2110-BOOST PRESSURE SERVO MOTOR CIRCUIT SHORT CIRCUIT.........164
P2112-BOOST PRESSURE SERVO MOTOR CIRCUIT EXCESSIVE CURRENT . . .164
P2526-BOOST PRESSURE SERVO MOTOR SHORT TO VOLTAGE.............164
P2111-BOOST PRESSURE SERVO MOTOR CIRCUIT SHORT TO GROUND.....167
P2112-BOOST PRESSURE SERVO MOTOR CIRCUIT OPEN CIRCUIT..........167
P2510-BOOST PRESSURE SERVO MOTOR SHORT TO GROUND.............167
P2526-BOOST PRESSURE SERVO MOTOR OPEN CIRCUIT..................167
P2526-BOOST PRESSURE SERVO MOTOR SHORT TO GROUND.............167
P2132-GLOW PLUG CONTROL MODULE CIRCUIT OPEN CIRCUIT............171
P2132-GLOW PLUG CONTROL MODULE CIRCUIT SHORTED TO GROUND. . . .171
P2132-GLOW PLUG CONTROL MODULE CIRCUIT SHORTED TO VOLTAGE OR
OPEN................................................................171
P2132-GLOW PLUG CONTROL MODULE FAULT............................171
P2151-FUEL PRESS SOLENOID SIGNAL PLAUSIBILITY HIGH................173
P2151-FUEL PRESS SOLENOID SIGNAL PLAUSIBILITY LOW.................173
vii

TABLE OF CONTENTS - Continued
P2259-TORQUE REDUCTION MESSAGE FROM HVAC- SWITCH SIGNAL
PLAUSIBILITY.........................................................196
P229-INSTRUMENT CLUSTER MESSAGE - AMBIENT TEMPERATURE SIGNAL
PLAUSIBILITY.........................................................197
P2306-SENSOR SUPPLY 2 VOLTAGE IS TOO HIGH.........................198
P2306-SENSOR SUPPLY 2 VOLTAGE IS TOO LOW.........................200
P2332-SENSOR SUPPLY 3 VOLTAGE IS TOO LOW.........................203
P2332-SENSOR SUPPLY 3 VOLTAGE IS TOO HIGH.........................206
P2333-S/C VEHICLE SPEED PLAUSIBILITY................................209
P2338-S/C EXCESSIVE ACCELERATION..................................209
P2338-S/C EXCESSIVE DECELERATION..................................209
P2339-ECM CHECKSUM ERROR #1......................................211
P2339-ECM CHECKSUM ERROR #2......................................211
P2339-ECM INVALID CODING............................................211
P2339-ECM INVALID DATA..............................................211
P2344-KICKDOWN SWITCH PLAUSIBILITY................................212
P2347-AUTOMATIC TRANSMISSION CODED AS MANUAL TRANSMISSION.....213
P2347-CAN BUS CIRCUIT INTERUPTION..................................213
P2347-MANUAL TRANSMISSIO CODED AS AUTO TRANSMISSION............213
P2347-WRITE ERROR TO EEPROM......................................213
P2351-ECM SUPPLY VOLTAGE TOO LOW.................................214
P2359-BOOST PRESSURE TOO HIGH....................................216
P2359-BOOST PRESSURE TOO LOW.....................................216
P2511-EGR VALVE SIGNAL CIRCUIT SHORTED TO GROUND................218
P2527-EGR VALVE SIGNAL CIRCUIT OPEN CIRCUIT........................218
P2527-EGR VALVE SIGNAL CIRCUIT SHORTED TO GROUND................218
P2514-CRANKCASE VENT HEATER OPEN CIRCUIT........................221
P2514-CRANKCASE VENT HEATER SHORTED TO GROUND.................221
P2514-CRANKCASE VENT HEATER SHORTED TO VOLTAGE.................221
P2521-IMPROPER START ATTEMPT......................................224
P2527-EGR VALVE SIGNAL CIRCUIT SHORTED TO VOLTAGE................225
P2531-FUEL INJECTOR 1 READ TOO LARGE..............................227
P2531-FUEL INJECTOR 1 READ TOO LARGE..............................227
P2531-FUEL INJECTOR 1 READ TOO SMALL..............................227
P2531-FUEL INJECTOR 1 READ TOO SMALL..............................227
P2532-FUEL INJECTOR 2 READ TOO LARGE..............................227
P2532-FUEL INJECTOR 2 READ TOO LARGE..............................227
P2532-FUEL INJECTOR 2 READ TOO SMALL..............................227
P2532-FUEL INJECTOR 2 READ TOO SMALL..............................227
P2533-FUEL INJECTOR 3 READ TOO LARGE..............................227
P2533-FUEL INJECTOR 3 READ TOO LARGE..............................227
P2533-FUEL INJECTOR 3 READ TOO SMALL..............................227
P2533-FUEL INJECTOR 3 READ TOO SMALL..............................227
P2534-FUEL INJECTOR 4 READ TOO LARGE..............................227
P2534-FUEL INJECTOR 4 READ TOO LARGE..............................227
P2534-FUEL INJECTOR 4 READ TOO SMALL..............................227
P2534-FUEL INJECTOR 4 READ TOO SMALL..............................227
P2535-FUEL INJECTOR 5 READ TOO LARGE..............................227
P2535-FUEL INJECTOR 5 READ TOO LARGE..............................227
P2535-FUEL INJECTOR 5 READ TOO SMALL..............................227
P2535-FUEL INJECTOR 5 READ TOO SMALL..............................227
P2606-CMP/CKP SYNCHRONIZATION ERROR.............................229
*CHECKING THE FUEL PRESSURE SENSOR CIRCUITS.....................232
ix

TABLE OF CONTENTS - Continued
*CHECKING THE FUEL PRESSURE SOLENOID CIRCUITS...................233
*CHECKING THE FUEL QUANTITY SOLENOID CIRCUITS....................234
*CHECKING THE POWER AND GROUNDS................................235
*ENGINE CRANKS BUT WILL NOT START.................................239
*ENGINE WILL NOT CRANK.............................................242
VERIFICATION TESTS
VERIFICATION TESTS..................................................246
8.0 COMPONENT LOCATIONS..............................................249
8.1CONTROL MODULES.............................................249
8.2CONTROLS AND SOLENOIDS......................................249
8.3DATA LINK CONNECTOR..........................................250
8.4SENSORS.......................................................251
8.5SWITCHES......................................................253
9.0 CONNECTOR PINOUTS................................................255
ACCELERATOR PEDAL POSITION SENSOR (OBD).........................255
AIRBAG CONTROL MODULE - YELLOW...................................255
BOOST PRESSURE SENSOR (OBD)......................................255
BOOST PRESSURE SERVOMOTOR (OBD)................................256
CAMSHAFT POSITION SENSOR - BLACK.................................256
CONTROLLER ANTILOCK BRAKE........................................257
CRANKCASE HEATER - BLACK..........................................257
CRANKSHAFT POSITION SENSOR - BLACK...............................258
DATA LINK CONNECTOR - BLACK........................................258
EGR VALVE - BLACK...................................................258
ENGINE CONTROL MODULE C1 (OBD)...................................259
ENGINE CONTROL MODULE C2 (OBD)...................................260
ENGINE COOLANT TEMPERATURE SENSOR - BLACK......................260
ENGINE OIL SENSOR - BLACK..........................................261
FUEL INJECTOR NO. 1 - BLACK.........................................261
FUEL INJECTOR NO. 2 - BLACK.........................................261
FUEL INJECTOR NO. 3 - BLACK.........................................261
FUEL INJECTOR NO. 4 - BLACK.........................................262
FUEL INJECTOR NO. 5 - BLACK.........................................262
FUEL PRESSURE SENSOR - BLACK.....................................262
FUEL PRESSURE SOLENOID............................................262
FUEL PUMP (OBD).....................................................262
FUEL PUMP RELAY (OBD)..............................................263
FUEL QUANTITY CONTROL VALVE (OBD).................................263
FUEL TEMPERATURE SENSOR..........................................263
ENGINE CONTROL RELAY (FUSE BLOCK NO. 1)...........................265
FUSES (FUSE BLOCK NO. 1)............................................265
FUSES (FUSE BLOCK NO. 2)............................................267
FUSES (FUSE/RELAY BLOCK)...........................................269
STARTER MOTOR RELAY (FUSE/RELAY BLOCK)...........................269
GLOW PLUG CONTROL MODULE C1 - BLACK.............................270
GLOW PLUG CONTROL MODULE C2 - BLACK.............................270
INTAKE AIR PRESSURE SENSOR (OBD)..................................270
INTAKE AIR TEMPERATURE SENSOR - BLACK............................270
x

supply circuits). Refer to the appropriate wiring
diagrams to identify shared circuits.
abs brake message plausibility 1
abs brake message plausibility 2
abs brake signal can message implausible
abs can brake signal plausibility
abs can message missing or incorrect
abs dtc external quantity control fault present
abs steering angle sensor can message implausible
1
abs steering angle sensor can message implausible
2
acc pedal position sensor 1 ckt plausibility
acc pedal position sensor 1 ckt signal voltage too
high
acc pedal position sensor 1 ckt signal voltage too low
acc pedal position sensor 2 circuit plausibility
acc pedal position sensor 2 ckt signal voltage too
high
acc pedal position sensor 2 ckt signal voltage too low
acm circuit fault
acm circuit short to voltage
ambient air temperature signal voltage too high
ambient air temperature signal voltage too low
app sensor plausibility
atmospheric pressure sensor plausibility with boost
pressure sensor
atmospheric pressure sensor signal voltage too high
atmospheric pressure sensor signal voltage too low
automatic transmission coded as manual transmis-
sion
boost pressure servo motor circuit excessive current
boost pressure servo motor circuit open circuit
boost pressure servo motor circuit short circuit
boost pressure servo motor circuit short to ground
boost pressure servo motor excessive current
boost pressure servo motor open circuit
boost pressure servo motor short to ground
boost pressure servo motor short to ground
boost pressure servo motor short to voltage
boost pressure too high
boost pressure too low
camshaft position sensor circuit open circuit
camshaft position sensor circuit open or short cir-
cuit
can bus circuit interuption
can data bus -bus circuit fault
can message error
*checking the fuel pressure sensor circuits
*checking the fuel pressure solenoid circuits
*checking the fuel quantity solenoid circuits
*checking the power and grounds
ckp plausibility
cmp/ckp synchronization error
crankcase vent heater excessive current
crankcase vent heater open circuit
crankcase vent heater shorted to ground
crankcase vent heater shorted to voltagecrankshaft position sensor circuit lost signal
crankshaft position sensor circuit signal plausibil-
ity
crankshaft position sensor plausibility
cylinder #1 injector open circuit
cylinder #2 injector open circuit
cylinder #3 injector open circuit
cylinder #4 injector open circuit
cylinder #5 injector open circuit
cylinder 1-injector circuit excessive current
cylinder 1-injector circuit open or shorted to ground
cylinder 1-injector circuit shorted to voltage
cylinder 1-injector circuit shorted to ground
cylinder 2-injector circuit excessive current
cylinder 2-injector circuit open or shorted to ground
cylinder 2-injector circuit shorted to ground
cylinder 2-injector circuit shorted to voltage
cylinder 3-injector circuit excessive current
cylinder 3-injector circuit open or shorted to ground
cylinder 3-injector circuit shorted to ground
cylinder 3-injector circuit shorted to voltage
cylinder 4-injector circuit excessive current
cylinder 4-injector circuit open or shorted to ground
cylinder 4-injector circuit shorted to ground
cylinder 4-injector circuit shorted to voltage
cylinder 5-injector circuit excessive current
cylinder 5-injector circuit open or shorted to ground
cylinder 5-injector circuit shorted to ground
cylinder 5-injector circuit shorted to voltage
ecm a/d converter high
ecm a/d converter low
ecm a/d converter plausibility
ecm checksum error #1
ecm checksum error #2
ecm incorrect value
ecm injection quantity error
ecm injector monitoring 1
ecm injector monitoring 2
ecm injector monitoring 3
ecm injector monitoring 4
ecm injector output stage #1
ecm injector output stage #1 short circuit
ecm injector output stage #2
ecm injector output stage #2 short circuit
ecm injector undervoltage
ecm internal error
ecm internal error
ecm internal error
ecm internal error
ecm internal error 1
ecm internal error 1
ecm internal error 1
ecm internal error 1
ecm internal error 1
ecm internal error 2
ecm internal error 2
ecm internal error 2
ecm internal error 3
4
GENERAL INFORMATION

small
mass air flow sensor positive deviation
mass air flow sensor signal circuit open or shorted
mass air flow sensor signal voltage too high
mass air flow sensor signal voltage too high
mass air flow sensor signal voltage too low
mass air flow sensor signal voltage too low
mass air flow sensor signal voltage too low
mass air flow sensor signal voltage too low
mass air flow sensor supply voltage too high
mass air flow sensor supply voltage too low
misfire cylinder #1
misfire cylinder #1
misfire cylinder #2
misfire cylinder #2
misfire cylinder #3
misfire cylinder #3
misfire cylinder #4
misfire cylinder #4
misfire cylinder #5
misfire cylinder #5
misfire detected
no message received from skreem
o2 circuit fault
o2 sensor circuit calibration value too high
o2 sensor circuit calibration value too high
o2 sensor circuit calibration value too high
o2 sensor circuit calibration value too low
o2 sensor circuit calibration value too low
o2 sensor circuit calibration value too low
o2 sensor circuit fault
o2 sensor circuit fault
o2 sensor circuit open circuit
o2 sensor circuit open circuit
o2 sensor circuit signal voltage too high
o2 sensor circuit signal voltage too high
o2 sensor circuit signal voltage too low
o2 sensor circuit signal voltage too low
o2 sensor heater circuit fault
o2 sensor low o2 concentration
o2 sensor plausibility
o2 sensor plausibility
o2 sensor plausibility
o2 sensor plausibility
o2 sensor plausibility
o2 sensor signal circuit signal voltage too high
o2 sensor signal circuit signal voltage too high
o2 sensor signal circuit signal voltage too high
o2 sensor signal fault
o2 sensor signal plausibility
s/c excessive acceleration
s/c excessive deceleration
s/c vehicle speed plausibility
sensor supply 1 voltage is too high
sensor supply 1 voltage is too low
sensor supply 2 voltage is too high
sensor supply 2 voltage is too low
sensor supply 3 voltage is too highsensor supply 3 voltage is too low
starter relay circuit ecm thermal overload
starter relay circuit open or shorted to voltage
starter relay circuit short circuit
starter relay circuit short to ground
steering angle sensor plausibility
tcm dtc 1-2 and 4-5 shift solenoid fault present
tcm dtc 2-3 shift solenoid fault present
tcm dtc 3-4 shift solenoid fault present
tcm dtc can msg implausible fault present
tcm dtc ewm can message fault present
tcm dtc internal fault present
tcm dtc modulating pressure solenoid fault present
tcm dtc negative gear comparison fault present
tcm dtc not unequivocal fault present
tcm dtc right rear wheel speed implausible fault
present
tcm dtc shift pressure solenoid fault present
tcm dtc speed sensor voltage fault present
tcm dtc tcc excessive power consumption fault
present
tcm dtc torque converter clutch solenoid fault
present
tcm dtc transmission ratio error fault present
tcm dtc valve voltage supply fault present
tcm message error
tcm no can message
torque reduction message from abs -can plausibility
torque reduction message from abs -message error
torque reduction message from abs -messages miss-
ing
torque reduction message from abs -no communica-
tion
torque reduction message from abs -plausibility #1
torque reduction message from abs plausibility #2
torque reduction message from hvac switch signal
plausibility
torque reduction message from hvac-parity error
torque reduction message from hvac-switch signal
error
torque reduction message from tcm -can plausibil-
ity
torque reduction message from tcm -engine stop
torque reduction message from tcm -message error
torque reduction message from tcm -messages miss-
ing
torque reduction message from tcm -plausibility
torque reduction message from tcm -tcm dtc #1
torque reduction message from tcm -tcm dtc #2
water in fuel sensor signal error
water in fuel sensor -water in fuel
wheel speed sensor plaus -can bus message from
abs
write error to eeprom
7
GENERAL INFORMATION

P2342-ECM INTERNAL ERROR 2
P2350-INTERNAL VOLTAGE ERROR
P2352-INJECTION FAULT - EXCESSIVE TEMPERATURE
P2352-INJECTION FAULT - QUANTITY ERROR
P2352-INJECTION FAULT - TORQUE LIMIT
P2352-INJECTION FAULT EXCESSIVE ENGINE SPEED
P2354-ECM INTERNAL FAULT
P2356-ECM INTERNAL ERROR
P2357-ECM INTERNAL ERROR
P2358-ECM INTERNAL ERROR
P2500-FUEL PRESSURE SOLENOID CIRCUIT EXCESSIVE CUR-
RENT
P2514-CRANKCASE VENT HEATER EXCESSIVE CURRENT
P2526-BOOST PRESSURE SERVO MOTOR EXCESSIVE CURRENT
P2527-EGR VALVE EXCESSIVE CURRENT
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P-1105 ATMOSPHERIC PRES-
SURE SENSOR PLAUSIBILITY WITH BOOST PRESSURE
SENSOR.
When Monitored and Set Condition:
P1105-ATMOSPHERIC PRESSURE SENSOR SIGNAL VOLTAGE TOO HIGH
When Monitored: With the ignition on.
Set Condition: The ECM internal Atmospheric Pressure Sensor is faulty.
P1105-ATMOSPHERIC PRESSURE SENSOR SIGNAL VOLTAGE TOO LOW
When Monitored: With the ignition on.
Set Condition: The ECM internal Atmospheric Pressure Sensor is faulty.
P2500-FUEL PRESSURE SOLENOID CIRCUIT EXCESSIVE CURRENT
When Monitored: With the ignition on.
Set Condition: The ECM detects an open or short to ground on the Fuel Pressure Solenoid
Control circuit.
POSSIBLE CAUSES
ENGINE CONTROL MODULE
INTERMITTENT CONDITION
17
DRIVEABILITY - DIESEL
P-1105 ATMOSPHERIC PRESSURE SENSOR PLAUSIBILITY WITH
BOOST PRESSURE SENSOR Ð
Continued

Symptom List:
P2026-O2 SENSOR CIRCUIT FAULT
P2026-O2 SENSOR CIRCUIT OPEN CIRCUIT
P2026-O2 SENSOR CIRCUIT SIGNAL VOLTAGE TOO HIGH
P2026-O2 SENSOR CIRCUIT SIGNAL VOLTAGE TOO LOW
P2028-O2 SENSOR CIRCUIT FAULT
P2028-O2 SENSOR CIRCUIT OPEN CIRCUIT
P2028-O2 SENSOR CIRCUIT SIGNAL VOLTAGE TOO HIGH
P2028-O2 SENSOR CIRCUIT SIGNAL VOLTAGE TOO LOW
P2032-O2 SENSOR PLAUSIBILITY
P2032-O2 SENSOR PLAUSIBILITY
P2032-O2 SENSOR PLAUSIBILITY
P2057-O2 SENSOR SIGNAL CIRCUIT SIGNAL VOLTAGE TOO HIGH
P2058-O2 SENSOR SIGNAL CIRCUIT SIGNAL VOLTAGE TOO HIGH
P2059-O2 SENSOR SIGNAL CIRCUIT SIGNAL VOLTAGE TOO HIGH
P2090-O2 SENSOR PLAUSIBILITY
P2090-O2 SENSOR SIGNAL FAULT
P2091-O2 SENSOR LOW O2 CONCENTRATION
P2091-O2 SENSOR SIGNAL PLAUSIBILITY
P2195-O2 SENSOR HEATER CIRCUIT FAULT
P2353-O2 SENSOR PLAUSIBILITY
P2366-O2 CIRCUIT FAULT
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P2026-O2 SENSOR CIRCUIT
FAULT.
POSSIBLE CAUSES
CHECKING CIRCUIT INTEGRITY
ECM
O2 SENSOR
O2 SENSOR CIRCUIT SHORT TO GROUND
O2 SENSOR CIRCUIT SHORT TO VOLTAGE
O2 SENSOR CIRCUIT SHORT TOGETHER
O2 SENSOR OPEN CIRCUIT
POWER SUPPLY OPEN
INTERMITTENT CONDITION
134
DRIVEABILITY - DIESEL

Symptom List:
P2514-CRANKCASE VENT HEATER OPEN CIRCUIT
P2514-CRANKCASE VENT HEATER SHORTED TO GROUND
P2514-CRANKCASE VENT HEATER SHORTED TO VOLTAGE
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P2514-CRANKCASE VENT
HEATER OPEN CIRCUIT.
POSSIBLE CAUSES
CHECKING ECM POWER AND GROUNDS
CHECKING THE ENGINE CONTROL RELAY SYSTEM
INTERMITTENT CONDITION
CRANKCASE VENT HEATER SHORTED TO VOLTAGE
CRANKCASE VENT HEATER CIRCUIT SHORTED TO GROUND
CRANKCASE HEATER VENT CIRCUIT(S) OPEN
CRANCASE VENT HEATER
ENGINE CONTROL MODULE
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.
NOTE: The engine should be cold for this test to be accurate.
Turn the ignition on.
With the DRB, erase ECM DTCs.
Perform several engine run cycles, turning the ignition off for at least 10 seconds
between each engine run cycle.
Monitor the DRB for ECM DTCs.
Did this DTC set again?All
Ye s!Go To 2
No!Go To 7
221
DRIVEABILITY - DIESEL