U1000 can comm
Description
Refer to LAN-7, "CAN COMMUNICATION SYSTEM : System Description".
Dtc logic
DTC DETECTION LOGIC
NOTE:
U1000 can be set if a module harness was disconnected and reconnected, perhaps during a repair. Confirm that there are actual CAN diagnostic symptoms and a present DTC by performing the Self Diagnostic Result procedure.
CONSULT Display | DTC Detection Condition | Possible Cause |
CAN COMM CIRCUIT [U1000] | When any listed module cannot communicate with CAN communication signal continuously for 2 seconds or more with ignition switch ON | In CAN communication system, any item (or
items) of the following listed below is malfunctioning.
|
Diagnosis procedure
1. PERFORM SELF DIAGNOSTIC RESULT
Is “CAN COMM CIRCUIT” displayed? YES >> Perform CAN Diagnosis as described in DIAGNOSIS section of CONSULT operation manual.
NO >> Refer to GI-39, "Intermittent Incident".
U1010 control unit (can)
DTC Logic
DTC DETECTION LOGIC
CONSULT Display | DTC Detection Condition | Possible Cause |
CONTROL UNIT (CAN) [U1010] | BCM detected internal CAN communication circuit malfunction. | BCM |
Diagnosis Procedure
1.REPLACE BCM
When DTC “U1010” is detected, replace BCM.
>> Replace BCM. Refer to BCS-126, "Removal and Installation".
Power supply and ground circuit
Diagnosis procedure
Regarding Wiring Diagram information, refer to BCS-111, "Wiring Diagram".
1.CHECK FUSES AND FUSIBLE LINK
Check that the following fuses and fusible link are not blown.
Is the fuse blown? YES >> Replace the blown fuse or fusible link after repairing the affected circuit.
NO >> GO TO 2.
2.Check power supply circuit
Is the inspection result normal? YES >> GO TO 3.
NO >> Repair harness or connector.
3.Check ground circuit
Check continuity between bcm connector and ground.
Is the inspection result normal? Yes >> inspection end.
No >> repair harness or connector.
Door switch
Description
Detects door open/close condition.
Component function check
1.Check function
With consult
Check door switches DOOR SW-DR, DOOR SW-AS, DOOR SW-RL, DOOR SW-RR in Data Monitor mode with CONSULT.
Is the inspection result normal? Yes >> door switch is ok.
No >> refer to dlk-253, "diagnosis procedure".
Diagnosis procedure
Regarding wiring diagram information, refer to dlk-224, "wiring diagram".
1.Check door switch input signal
Is the inspection result normal? Yes >> go to 4
No >> go to 2
2.Check door switch circuit
Is the inspection result normal? YES >> GO TO 3 NO >> Repair or replace harness between BCM and door switch.
3.Check door switch
Refer to DLK-255, "Component Inspection".
Is the inspection result normal? YES >> GO TO 4 NO >> Replace malfunctioning door switch.
4.Check intermittent incident
Refer to gi-39, "intermittent incident".
>> Inspection end.
Component inspection
1.Check door switch
Is the inspection result normal? Yes >> inspection end.
No >> replace malfunctioning door switch.
Door lock and unlock switch
Driver side
Driver side : description
Transmits door lock/unlock operation to bcm.
Driver side : component function check
1.Check function
With consult
Check CDL LOCK SW, CDL UNLOCK SW in Data Monitor mode with CONSULT.
Is the inspection result normal? Yes >> door lock and unlock switch is ok.
No >> refer to dlk-256, "driver side : diagnosis procedure".
Driver side : diagnosis procedure
Regarding Wiring Diagram information, refer to DLK-233, "Wiring Diagram".
1.Check power window switch output signal
Is the inspection result normal? Yes >> go to 5
No >> go to 2
2.Check power window switch ground
Is the inspection result normal? Yes >> go to 3
No >> repair or replace harness.
3.Check power window switch
Check continuity between main power window and door lock/unlock switch terminals.
Is the inspection result normal? Yes >> go to 4 no >> replace main power window and door lock/unlock switch. Refer to pwc-70, "removal and installation".
4.Check power window switch circuits
Is the inspection result normal? Yes >> go to 5
NO >> Repair or replace harness.
5.Check intermittent incident
Refer to gi-39, "intermittent incident".
>> Inspection end.
Passenger side
PASSENGER SIDE : Description
Transmits door lock/unlock operation to bcm.
PASSENGER SIDE : Component Function Check
1.Check function
With consult
Check cdl lock sw, cdl unlock sw in data monitor mode with consult.
Is the inspection result normal? Yes >> door lock and unlock switch is ok.
No >> refer to dlk-258, "passenger side : diagnosis procedure".
PASSENGER SIDE : Diagnosis Procedure
Regarding wiring diagram information, refer to dlk-233, "wiring diagram".
1.Check power window switch output signal
Is the inspection result normal? YES >> GO TO 5
No >> go to 2
2.Check power window switch ground
Is the inspection result normal? Yes >> go to 3
NO >> Repair or replace harness.
3.Check power window switch
Check continuity between power window and door lock/unlock switch rh terminals.
Is the inspection result normal? YES >> GO TO 4
No >> replace power window and door lock/unlock switch rh.
4.Check power window switch circuits
Is the inspection result normal? YES >> GO TO 5
No >> repair or replace harness.
5.Check intermittent incident
Refer to gi-39, "intermittent incident".
>> Inspection end.
Key cylinder switch
Description
When the mechanical key is inserted and turned into the front door lock key cylinder switch LH, the switch transmits the LOCK or UNLOCK signal directly to the BCM.
Component function check
1.Check door key cylinder switch input signal
Check KEY CYL UN-SW, KEY CYL UN-SW in “DATA MONITOR” mode for “POWER DOOR LOCK SYSTEM” with CONSULT. Refer to DLK-221, "DOOR LOCK : CONSULT Function (BCM - DOOR LOCK)".
Is the inspection result normal? YES >> Key cylinder switch is OK.
NO >> Refer to DLK-260, "Diagnosis Procedure".
Diagnosis procedure
Regarding wiring diagram information, refer to dlk-233, "wiring diagram".
1.Check door key cylinder switch input signal
Is the inspection result normal? Yes >> front door lock key cylinder switch lh is ok.
No >> go to 2
2.Check door key cylinder switch ground circuit
Is the inspection result normal?
YES >> GO TO 3
No >> repair or replace harness.
3.Check door key cylinder signal circuit
Is the inspection result normal? Yes >> go to 4
No >> repair or replace harness.
4.Check door key cylinder switch
Check door key cylinder switch.
Refer to dlk-261, "component inspection".
Is the inspection result normal? Yes >> check intermittent incident. Refer to gi-39, "intermittent incident".
No >> replace front door lock key cylinder switch lh.
Component inspection
1.Check door key cylinder switch
Check front door lock key cylinder switch lh.
Is the inspection result normal? Yes >> key cylinder switch is ok.
No >> replace front door lock key cylinder switch lh.
KEY SWITCH (BCM INPUT)
Diagnosis Procedure
Regarding wiring diagram information, refer to dlk-224, "wiring diagram".
1.Check key switch input signal
With consult
Check key switch "key on sw" in data monitor mode with consult. Refer to dlk-221, "door lock : consult function (bcm - door lock)".
Key on sw : on
Key on sw : off
Without consult
Check voltage between bcm connector m21 terminal 37 and ground.
Is the inspection result normal? Yes >> key switch (insert) circuit is ok.
No >> go to 2
2.Check key switch (insert)
Is the inspection result normal? YES >> Repair or replace harness or fuse.
NO >> Replace key switch.
Door lock actuator
DRIVER SIDE
DRIVER SIDE : Description
Locks/unlocks the door with the signal from bcm.
DRIVER SIDE : Component Function Check
1.Check function
Is the inspection result normal? Yes >> door lock actuator is ok.
No >> refer to dlk-263, "driver side : diagnosis procedure".
DRIVER SIDE : Diagnosis Procedure
Regarding wiring diagram information, refer to dlk-233, "wiring diagram".
1.Check output signal
Check voltage between bcm connector and ground.
Is the inspection result normal? Yes >> go to 3
No >> go to 2
2.Check door lock actuator circuit
Is the inspection result normal? Yes >> replace front door lock actuator lh.
No >> repair or replace harness.
3.Check intermittent incident
Refer to gi-39, "intermittent incident".
>> Inspection end.
Passenger side
PASSENGER SIDE : Description
Locks/unlocks the door with the signal from bcm.
PASSENGER SIDE :Component Function Check
1.Check function
Is the inspection result normal? Yes >> door lock actuator is ok.
No >> refer to dlk-264, "passenger side : diagnosis procedure".
PASSENGER SIDE : Diagnosis Procedure
Regarding wiring diagram information, refer to dlk-233, "wiring diagram".
1.Check door lock actuator signal
Check voltage between bcm connector and ground.
Is the inspection result normal? Yes >> go to 3
No >> go to 2
2.Check door lock actuator circuit
Is the inspection result normal? Yes >> replace front door lock actuator rh.
No >> repair or replace harness.
3.Check intermittent incident
Refer to gi-39, "intermittent incident".
>> Inspection end.
Rear lH
Rear lh : description
Locks/unlocks the door with the signal from bcm.
Rear lh : component function check
1.Check function
Is the inspection result normal? Yes >> door lock actuator is ok.
No >> refer to dlk-265, "rear lh : diagnosis procedure".
Rear lH : diagnosis procedure
Regarding Wiring Diagram information, refer to DLK-233, "Wiring Diagram".
1.Check door lock actuator signal
Check voltage between bcm connector and ground.
Is the inspection result normal? Yes >> go to 3
No >> go to 2
2.Check door lock actuator circuit
Is the inspection result normal? Yes >> replace rear door lock actuator lh.
No >> repair or replace harness.
3.Check intermittent incident
Refer to gi-39, "intermittent incident".
>> Inspection end.
Rear RH
REAR RH : Description
Locks/unlocks the door with the signal from bcm.
REAR RH : Component Function Check
1.Check function
Is the inspection result normal? Yes >> door lock actuator is ok.
No >> refer to dlk-266, "rear rh : diagnosis procedure".
REAR RH : Diagnosis Procedure
Regarding Wiring Diagram information, refer to DLK-233, "Wiring Diagram".
1.Check door lock actuator signal
Check voltage between bcm connector and ground.
Is the inspection result normal? Yes >> go to 3
NO >> GO TO 2
2.Check door lock actuator circuit
Is the inspection result normal? Yes >> replace rear door lock actuator rh.
No >> repair or replace harness.
3.Check intermittent incident
Refer to gi-39, "intermittent incident".
>> Inspection end.
Remote keyless entry receiver
Description
Receives keyfob operation and transmits to bcm.
Component Function Check
1.CHECK FUNCTION
With consult
Check remote keyless entry receiver keyless lock, keyless unlock, and keyless panic in data monitor mode with consult.
Is the inspection result normal? Yes >> remote keyless entry receiver is ok.
No >> refer to dlk-268, "diagnosis procedure".
Diagnosis Procedure
Regarding wiring diagram information, refer to dlk-224, "wiring diagram".
1.Check remote keyless entry receiver output signal
Is the inspection result normal? Yes >> go to 7
No >> go to 2
2.Check remote keyless entry receiver power supply
Is the inspection result normal? Yes >> go to 4
No >> go to 3
3.Check remote keyless entry receiver circuit 1
Is the inspection result normal? Yes >> reconnect bcm, go to 4
No >> repair or replace harness between bcm and remote keyless entry receiver.
4.Check remote keyless entry receiver ground circuit
Check continuity between remote keyless entry receiver connector and ground.
Is the inspection result normal? Yes >> go to 6
NO >> GO TO 5
5.Check remote keyless entry receiver circuit 2
Check continuity between bcm connector and remote keyless entry receiver connector.
Is the inspection result normal? Yes >> go to 7
No >> repair or replace harness between bcm and remote keyless entry receiver.
6.Check remote keyless entry receiver circuit 3
Check continuity between bcm connector and remote keyless entry receiver connector.
Is the inspection result normal? Yes >> go to 7
No >> repair or replace harness between bcm and remote keyless entry.
7.Check intermittent incident
Refer to GI-39, "Intermittent Incident".
>> Inspection End.
Keyfob battery and function
Description
The following functions are available when having and carrying the keyfob.
Remote control entry function and panic alarm function are available when operating the remote buttons.
Component Function Check
Note:
The Signal Tech II Tool (J-50190) can be used to perform the following functions. Refer to the Signal Tech II User Guide for additional information.
1.Check function
With consult
Check remote keyless entry receiver keyless lock, keyless unlock, and keyless panic in data monitor mode with consult.
Monitor item | Condition |
Keyless lock | Checks whether value changes from "Off" to "On" when operating keyfob lock button. |
KEYLESS UNLOCK | Checks whether value changes from "off" to "on" when operating keyfob unlock button. |
Keyless panic | Checks whether value changes from "off" to "on" when operating keyfob panic button. |
Is the inspection result normal? Yes >> keyfob is ok.
No >> refer to dlk-271, "diagnosis procedure".
Diagnosis Procedure
Note:
The signal tech ii tool (j-50190) can be used to perform the following functions. Refer to the signal tech ii user guide for additional information.
1.Check keyfob function
Check keyfob function using signal tech ii tool j-50190 or remote keyless entry tester j-43241 (shown).
Does the test pass? Yes >> keyfob is ok.
No >> go to 2
2. Check keyfob components
Caution:
Caution:
Keep dirt, grease, and other foreign materials off the electrode contact area.
Is the inspection result normal? Yes >> go to 3
NO >> Repair or replace malfunctioning parts.
3.Check keyfob battery
Check by connecting a resistance (approximately 300ù) so that the current value becomes about 10 ma.
Standard : approx. 2.5 - 3.0V
Is the measurement value within specification? Yes >> keyfob battery is ok. Check remote keyless entry receiver. Refer to dlk-268, "component function check".
No >> go to 4
4. Replace keyfob battery
Caution:
Is the inspection result normal? Yes >> keyfob is ok.
No >> check remote keyless entry receiver. Refer to dlk-268, "component function check".
Horn function
Description
Perform answer-back for each operation with horn.
Component function check
1.Check function
Is the operation normal? Yes >> inspection end.
No >> refer to dlk-273, "diagnosis procedure".
Diagnosis procedure
Regarding wiring diagram information, refer to dlk-224, "wiring diagram".
1.Check horn function
Check horn function with horn switch.
Does the horn sound? YES >> GO TO 2
No >> refer to hrn-3, "wiring diagram".
2.Check horn relay power supply
Is the inspection result normal? Yes >> repair or replace open harness between ipdm e/r and horn relay.
No >> go to 3
3.Check horn relay circuit
Turn ignition switch off.
Disconnect IPDM E/R and horn relay connector.
Check continuity between ipdm e/r harness connector and horn relay harness connector.
Is the inspection result normal? Yes >> go to 4
NO >> Repair or replace harness.
4.Check intermittent incident
Refer to gi-39, "intermittent incident".
Is the inspection result normal? Yes >> replace ipdm e/r. Refer to pcs-58, "removal and installation".
No >> repair or replace the malfunctioning part.
Trunk lid opener actuator
Component function check
1.Check function
Is the inspection result normal? Yes >> trunk lid opener actuator is ok.
No >> refer to dlk-275, "diagnosis procedure".
Diagnosis procedure
Regarding wiring diagram information, refer to dlk-241, "wiring diagram".
1.Check trunk lid opener input signal
Is the inspection result normal? YES >> GO TO 3.
NO >> GO TO 2.
2.Check trunk lid opener actuator circuit
Is the inspection result normal? Yes >> replace bcm. Refer to bcs-126, "removal and installation".
No >> repair or replace harness.
3.Check trunk lid opener actuator ground circuit
Check continuity between trunk lid opener assembly harness connector and ground.
Is the inspection normal? YES >> Replace trunk lid opener assembly.
NO >> Repair or replace harness.
Trunk lid opener switch
Component Function Check
1.Check function
Is the inspection result normal? YES >> Trunk lid opener switch is OK.
NO >> Refer to DLK-277, "Diagnosis Procedure".
Diagnosis Procedure
Regarding wiring diagram information, refer to dlk-241, "wiring diagram".
1.Check trunk lid opener input signal
Is the inspection result normal? YES >> GO TO 3.
NO >> GO TO 2.
2.Check trunk lid opener switch circuit
Is the inspection result normal? YES >> Replace BCM. Refer to BCS-126, "Removal and Installation".
NO >> Repair or replace harness.
3.Check trunk lid opener switch ground circuit
Check continuity between trunk lid opener switch harness connector and ground.
Is the inspection result normal? YES >> GO TO 4.
NO >> Repair or replace harness.
4.Check trunk lid opener switch
Refer to dlk-277, "component function check".
Is the inspection result normal? Yes >> go to 5.
No >> replace trunk lid opener switch.
5.Check intermittent incident
Refer to gi-39, "intermittent incident".
>> Inspection end.
Component Inspection
1.Check trunk lid opener switch
Is the inspection result normal? YES >> Inspection End.
NO >> Replace trunk lid opener switch.
Trunk lamp switch
Description
Detects trunk open/close condition.
Component function check
1.Check function
With consult
Check trnk/hat mntr in data monitor mode with consult.
Is the inspection result normal? Yes >> trunk room lamp switch is ok.
No >> refer to dlk-279, "diagnosis procedure".
Diagnosis procedure
Regarding wiring diagram information, refer to dlk-241, "wiring diagram".
1.Check trunk room lamp switch input signal
Is the inspection result normal? Yes >> go to 6
No >> go to 2
2.Check trunk room lamp switch circuit
Is the inspection result normal? Yes >> go to 3
No >> repair or replace harness between bcm and trunk lid opener assembly.
3.Check trunk room lamp switch ground circuit
Check continuity between trunk lid opener assembly connector and ground.
Is the inspection result normal? YES >> GO TO 4
No >> repair or replace trunk lid opener assembly ground circuit.
4.Check bcm output signal
Is the inspection result normal? Yes >> go to 5
No >> replace bcm. Refer to bcs-126, "removal and installation".
5.Check trunk room lamp switch
Refer to dlk-277, "component function check".
Is the inspection result normal? Yes >> go to 6
No >> replace trunk lid opener assembly.
6.Check intermittent incident
Refer to gi-39, "intermittent incident".
>> Inspection end.
Component inspection
1.Check trunk room lamp switch
Is the inspection result normal? YES >> Inspection End.
NO >> Replace trunk lid opener assembly.
Warning chime function
Description
Performs operation method guide and warning with buzzer.
Component function check
1.Check function
With consult
Is the inspection result normal? Yes >> warning buzzer into combination meter is ok.
No >> refer to dlk-282, "diagnosis procedure".
Diagnosis procedure
1.Check meter buzzer circuit
Operate the hazard lights by turning on the hazard warning switch.
Is the inspection result normal? Yes >> go to 2
No >> replace combination meter. Refer to mwi-77, "removal and installation".
2.Check intermittent incident
Refer to gi-39, "intermittent incident".
>> Inspection end.
Hazard function
Description
Perform answer-back for each operation with number of blinks.
Component function check
1.Check function
Check hazard warning lamp (“flasher”) in active test.
Is the inspection result normal? Yes >> hazard warning lamp circuit is ok.
No >> refer to dlk-283, "diagnosis procedure".
Diagnosis procedure
1.Check hazard switch circuit
Operate the hazard lights by turning on the hazard warning switch.
Is the inspection result normal? Yes >> go to 2
NO >> Repair or replace hazard warning switch circuit. Refer to EXL-129, "Removal and Installation".
2.Check intermittent incident
Refer to gi-39, "intermittent incident".
>> Inspection end.
Keyfob id set up with consult
ID Code Entry Procedure
Keyfob id set up with consult
Note:
Use this mode to register a keyfob id code.
Note:
Register the id code when keyfob or bcm is replaced, or when additional keyfob is required.
Use this mode to erase a keyfob id code.
Use this mode to confirm if a keyfob id code is registered or not.
Keyfob id set up without consult
Id code entry procedure
Keyfob id set up without consult
Note:
To erase all id codes in memory, register one id code (keyfob) five times. After all id codes are erased, the id codes of all remaining and/or new keyfobs must be re-registered.
Abs branch line circuit
Diagnosis procedure
1.Check connector
Turn the ignition switch off.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the abs actuator and electric unit
(control unit) for damage, bend
and loose connection (unit side and connector side).
...
Wiring diagram
AUTOMATIC AIR CONDITIONING SYSTEM
Wiring Diagram
...
Basic inspection
Diagnosis and repair work flow
Work flow
Detailed flow
1.Obtain information about symptom
Interview the customer to obtain as much information as possible about the
conditions and environment under
which the malfunction occurs.
>> GO TO 2.
2.Check symptom
Check the symptom based ...