Jeep Liberty KJ. Manual — part 461
PERFORMANCE.. . . . . . . . . . . . . . . . . . . . . . . . . . 180
CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 298
P0339-CRANKSHAFT POSITION SENSOR
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 306
P0340-CAMSHAFT POSITION SENSOR
CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
P0344-CAMSHAFT POSITION SENSOR
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
PERFORMANCE.. . . . . . . . . . . . . . . . . . . . . . . . . . 340
P0443-EVAP PURGE SOLENOID CIRCUIT . . . 344
P0452-NVLD PRESSURE SWITCH STUCK
CLOSED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
P0453-NVLD PRESSURE SWITCH STUCK
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354
PERFORMANCE.. . . . . . . . . . . . . . . . . . . . . . . . . . 376
P0462-FUEL LEVEL SENSOR 1 CIRCUIT
LOW.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381
P0463-FUEL LEVEL SENSOR 1 CIRCUIT
HIGH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384
P0480-COOLING FAN 1 CONTROL CIRCUIT . 388
P0498-NVLD CANISTER VENT VALVE
SOLENOID CIRCUIT LOW. . . . . . . . . . . . . . . . . . 392
P0499-NVLD CANISTER VENT VALVE
. . . . . . . . . . . . . . . . . . 395
PERFORMANCE.. . . . . . . . . . . . . . . . . . . . . . . . . . 399
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 403
. . . . . . . . . . . . . . . . . . 406
HIGHER THAN EXCEPTED. . . . . . . . . . . . . . . . . 408
P0508-IDLE AIR CONTROL VALVE SENSE
CIRCUIT LOW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410
P0509-IDLE AIR CONTROL VALVE SENSE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414
LOW (ESP).. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 424
P0533-A/C PRESSURE SENSOR CIRCUIT
HIGH (ESP). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 428
CIRCUIT LOW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 449
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 453
CONTROL CIRCUIT.. . . . . . . . . . . . . . . . . . . . . . . 459
P0586-SPEED CONTROL VENT CONTROL
CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 462
P0594-SPEED CONTROL SERVO POWER
RELAY CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . 465
P0600-SERIAL COMMUNICATION LINK . . . . . . 470
P0601-INTERNAL MEMORY CHECKSUM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 471
P0606-INTERNAL ECM PROCESSOR . . . . . . . 472
P0622-GENERATOR FIELD CONTROL
CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 473
PCM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 482
P0633-SKIM KEY NOT PROGRAMMED IN
PCM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 483
P0645-A/C CLUTCH CONTROL CIRCUIT . . . . . 484
P0685-AUTO SHUTDOWN CONTROL
CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 488
P0688-AUTO SHUTDOWN SENSE CIRCUIT
LOW.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 491
P0700-TRANSMISSION CONTROL SYSTEM
(MIL REQUEST). . . . . . . . . . . . . . . . . . . . . . . . . . . 495
PERFORMANCE.. . . . . . . . . . . . . . . . . . . . . . . . . . 496
RATIONALITY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 498
COMMUNICATION FAILURE. . . . . . . . . . . . . . . . 510
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ENGINE ELECTRICAL DIAGNOSTICS
KJ
P1604-PCM INTERNAL DUAL-PORT RAM
P1607-PCM INTERNAL SHUTDOWN TIMER
RATIONALITY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 514
P1696-EEPROM MEMORY WRITE DENIED/
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 516
P1697-EMR (SRI) MILEAGE NOT STORED . . . 518
P2074-MANIFOLD PRESSURE/THROTTLE
POSITION CORRELATION.. . . . . . . . . . . . . . . . . 520
P2096-DOWNSTREAM FUEL TRIM SYSTEM
1 LEAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 529
P2097-DOWNSTREAM FUEL TRIM SYSTEM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 534
P2098-DOWNSTREAM FUEL TRIM SYSTEM
2 LEAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 540
P2099-DOWNSTREAM FUEL TRIM SYSTEM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 545
P2181-COOLING SYSTEM PERFORMANCE . 551
P2302-IGNITION COIL 1 SECONDARY
CIRCUIT- INSUFFICIENT IONIZATION. . . . . . . 556
P2305-IGNITION COIL 2 SECONDARY
CIRCUIT- INSUFFICIENT IONIZATION. . . . . . . 560
P2308-IGNITION COIL 3 SECONDARY
CIRCUIT- INSUFFICIENT IONIZATION. . . . . . . 564
P2311-IGNITION COIL 4 SECONDARY
CIRCUIT- INSUFFICIENT IONIZATION. . . . . . . 568
P2314-IGNITION COIL 5 SECONDARY
CIRCUIT- INSUFFICIENT IONIZATION. . . . . . . 572
P2317-IGNITION COIL 6 SECONDARY
CIRCUIT- INSUFFICIENT IONIZATION. . . . . . . 576
ANTI-LOCK BRAKE MODULE. . . . . . . . . . . . . . . 587
U0140-LOST COMMUNICATION WITH BODY
CONTROL MODULE. . . . . . . . . . . . . . . . . . . . . . . 589
CLUSTER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 591
. . . . . . . . . . . . . . . . . . . . . . 593
U110C-NO FUEL LEVEL BUS MESSAGE
RECEIVED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 595
U110E-LOST AMBIENT TEMPERATURE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 597
SIGNAL RECEIVED. . . . . . . . . . . . . . . . . . . . . . . . 604
U1412-IMPLAUSIBLE VEHICLE SPEED
SIGNAL RECEIVED. . . . . . . . . . . . . . . . . . . . . . . . 606
. . . . . . . . . . . . . . 609
. . . . . . . . . . . . . . 612
CONDITION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 629
*START AND STALL CONDITION . . . . . . . . . . . . 634
POWERTRAIN VERIFICATION TEST . . . . . . . . 637
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ENGINE ELECTRICAL DIAGNOSTICS
9 - 3
ENGINE ELECTRICAL DIAGNOSTICS
DIAGNOSIS AND TESTING
9 - 4
ENGINE ELECTRICAL DIAGNOSTICS
KJ
PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE
Diagnostic Test
1.
NO RESPONSE
Make sure the scan tool will communicate with the appropriate modules.
Are you currently experiencing a NO RESPONSE condition?
Yes
>> The NO RESPONSE condition must be properly diagnosed before continuing.
Refer to the appropriate BUS Communication test in Section 8 ELECTRONIC CONTROL MODULES -
ELECTRICAL DIAGNOSTICS.
No
>> Go To 2
2.
NO START
Is the customer complaint a NO START condition?
Yes
>> Check the vehicle for any NO START related PCM DTCs or Vehicle Theft Security related DTCs.
If no Theft related DTCs are present, refer to the Non DTC Diagnostic Procedures that relate to Fuel
and Starting.
No
>> Go To 3
3.
VEHICLE HISTORY AND TSB(s)
Continue by reading PCM DTCs and record the related Freeze Frame data if any DTCs are present.
Whether or not any DTCs are present you will want to check the following items which may assist in repairing the
customers complaint successfully.
Check the vehicles repair history.
If the vehicle has a repair history that pertains to the customer’s current complaint, review the repair.
Inspect the vehicle for any aftermarket accessories that may have been installed incorrectly.
Check for any TSBs related to the customer’s complaint or DTCs.
If a TSB applies, follow the instructions per the TSB.
Choose the following scenario that best applies.
The TSB repaired the customers complaint.
Testing complete.
A DTC is present, no TSB applies, or the TSB didn’t repair the customers complaint.
Go To 4
No DTCs are present.
Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
4.
WIRE HARNESS INSPECTION
Clear the DTCs.
Attempt to duplicate the customer complaint.
Whether the customer complaint can be duplicated or not, make a quick wire harness inspection related to the
DTCs that were previously cleared.
Check the Powertrain Control Module connectors, the suspected component connection, in-line connectors, wire
harness splices, PCM power and ground circuits, and any related fuses.
If the DTCs are fuel or air related, check the fuel level and quality.
Were any repairs made that fixed the customer’s complaint?
Yes
>> Testing complete.
No
>> Refer to the diagnostic test procedure related to the DTC.
KJ
ENGINE ELECTRICAL DIAGNOSTICS
9 - 5
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