Page 161 of 5883

BCS-26
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
*: Each lamp switch is in ON position.
THEFT ALM
THEFT ALM : CONSULT-III Function (BCM - THEFT ALM)INFOID:0000000001451479
WORK SUPPORT
SIGNAL BUFFER
SIGNAL BUFFER : CONSULT-III Function (BCM - SIGNAL BUFFER)INFOID:0000000001451480
DATA MONITOR
ACTIVE TEST
PTC HEATER
PTC HEATER : CONSULT-III Function (BCM - PTC HEATER)INFOID:0000000001451481
DATA MONITOR
ACTIVE TEST
Work Item Description
SECURITY ALARM SETVehicle security function mode can be changed in this mode.
ON: Vehicle security function is ON.
OFF: Vehicle security function is OFF.
Monitor Item
[Unit]Description
OIL PRESS SW [ON/OFF] Displays the status of oil pressure switch received from IPDM E/R via CAN communication.
Test Item Operation Description
OIL PRESSURE SWOFF OFF
ONBCM transmits the oil pressure switch signal to the combination meter via CAN communica-
tion, which illuminates the oil pressure warning lamp in the combination meter.
Monitor Item
[Unit]Description
ELEC PWR CUT
[OFF/FREEZ/INHBT]Indicate [OFF/FREEZ/INHBT] condition of the PTC heater states.
FA N O N S I G
[On/Off]Displays [FAN (ON)/FAN (OFF)] status as judged from blower fan motor signal.
ENGINE STATUS
[STOP/STAL/RUN/CRA]Indicate [STOP/STALL/RUN/CRA] condition of the engine states.
ENG COOLNT T
[°C]The engine coolant temperature (determined by the signal voltage of the engine coolant tem-
perature sensor) is displayed.
BATTERY VOLT
[V]The power supply voltage of BCM is displayed.
ENGINE RPM
[rpm]Indicates the engine speed computed from the signal of the crankshaft position sensor.
OUTSIDE TEMP
[°C]The outside air temperature (determined by the signal voltage of the OAT sensor) is displayed.
Page 162 of 5883
BCS
DIAGNOSIS SYSTEM (BCM)
BCS-27
< FUNCTION DIAGNOSIS >
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Test Item Operation Description
PTC HEATEROFF
PTC 1
PTC 2
PTC 3This test is able to check PTC heater operation.
Page 163 of 5883
BCS-28
< COMPONENT DIAGNOSIS >
U1000 CAN COMM CIRCUIT
COMPONENT DIAGNOSIS
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000001451482
Refer to LAN-33, "CAN Communication Signal Chart".
DTC LogicINFOID:0000000001451483
DTC DETECTION LOGIC
Diagnosis ProcedureINFOID:0000000001451484
1. PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result” of BCM.
Is
“CAN COMM CIRCUIT” displayed?
YES >> Refer to LAN-22, "Trouble Diagnosis Flow Chart".
NO >> Refer to GI-55, "
Intermittent Incident".
DTCCONSULT-III display
descriptionDTC Detection Condition Possible cause
U1000 CAN COMM CIRCUITWhen BCM cannot communicate CAN com-
munication signal continuously for 2 sec-
onds or more.Any item (or items) of the following listed below is
malfunctioning in CAN communication system.
Transmission
Receiving (ECM)
Receiving (METER/M&A)
Receiving (TCM)
Receiving (MULTI AV)
Receiving (IPDM E/R)
Receiving (I-KEY)
Page 164 of 5883
BCS
U1010 CONTROL UNIT (CAN)
BCS-29
< COMPONENT DIAGNOSIS >
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U1010 CONTROL UNIT (CAN)
DTC LogicINFOID:0000000001451485
DTC DETECTION LOGIC
Diagnosis ProcedureINFOID:0000000001451486
1. REPLACE BCM
When “DTC:U1010” is detected, replace BCM.
>> Replace BCM. Refer to BCS-57, "
Removal and Installation of BCM".
Special Repair RequirementINFOID:0000000001451487
1. ADDITIONAL SERVICE WHEN REPLACING BCM
>> Refer to BCS-3, "
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair
Requirement".
DTCCONSULT-III display de-
scriptionDTC Detection Condition Possible cause
U1010 CONTROL UNIT (CAN)When detecting error during the initial diagnosis of CAN control-
ler of BCM.BCM
Page 165 of 5883

BCS-30
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis ProcedureINFOID:0000000001451488
1. CHECK FUSES AND FUSIBLE LINK
Check that the following fuses and fusible link are not fusing.
Is the fuse fusing?
YES >> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is
blown.
NO >> GO TO 2.
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3
NO >> Repair or replace harness.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES >> INSPECTION END
NO >> Repair or replace harness.
Terminal No. Signal name Fuses and fusible link No.
22
Battery power supply9 (10A)
728 (10A)
74
G (40A)
79
24 Ignition power supply 55 (10A)
Te r m i n a l s
Ignition switch position
(+)
(−) BCM
OFF ACC ON
Connector Terminal
M1822
GroundBattery
voltageBattery
voltageBattery
voltage
24Approx.
0 VApprox.
0 VBattery
voltage
M2072
Battery
voltageBattery
voltageBattery
voltage 74
79
ALMIA0188ZZ
BCM
GroundContinuity
Connector Terminal
M18 2
Ye s
M20 70
ALMIA0189ZZ
Page 166 of 5883

BCS
COMBINATION SWITCH INPUT CIRCUIT
BCS-31
< COMPONENT DIAGNOSIS >
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COMBINATION SWITCH INPUT CIRCUIT
Diagnosis ProcedureINFOID:0000000001451489
1. CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect BCM and combination switch.
3. Check continuity between BCM harness connector and combi-
nation switch harness connector.
Does continuity exist?
YES >> GO TO 2
NO >> Repair or replace harness.
2. CHECK INPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT
Check for continuity between BCM harness connector and ground.
Does continuity exist?
YES >> Repair or replace harness.
NO >> GO TO 3
3. CHECK BCM OUTPUT VOLTAGE
1. Connect BCM.
2. Turn ignition switch ON.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
SystemBCM Combination switch
Continuity
Connector Terminal Connector Terminal
INPUT 1
M20
(A)9
M28
(B)1
Ye s INPUT 2 28 2
INPUT 3 8 3
INPUT 4 27 4
INPUT 5 7 5
ALMIA0190ZZ
SystemBCM
GroundContinuity
Connector Terminal
INPUT 1
M209
No INPUT 2 28
INPUT 3 8
INPUT 4 27
INPUT 5 7
ALMIA0191ZZ
SystemTe r m i n a l s
Voltag e
(Approx.) (+) (−)
BCM
Ground Connector Terminal
INPUT 1
M209
Refer to BCS-
35, "Refer-
ence Value". INPUT 2 28
INPUT 3 8
INPUT 4 27
INPUT 5 7
ALMIA0192ZZ
Page 167 of 5883
BCS-32
< COMPONENT DIAGNOSIS >
COMBINATION SWITCH INPUT CIRCUIT
YES >> GO TO 4
NO >> Replace BCM. Refer to BCS-57, "
Removal and Installation of BCM".
4. CHECK COMBINATION SWITCH
Check combination switch. Refer to BCS-34, "
Description".
Is the check result normal?
YES >> Replace BCM. Refer to BCS-57, "Removal and Installation of BCM".
NO >> Replace the combination switch (applicable parts). Refer to EXL-101, "
Removal and Installation".
Special Repair RequirementINFOID:0000000001451490
1. ADDITIONAL SERVICE WHEN REPLACING BCM
>> Refer to BCS-3, "
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair
Requirement".
Page 168 of 5883

BCS
COMBINATION SWITCH OUTPUT CIRCUIT
BCS-33
< COMPONENT DIAGNOSIS >
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COMBINATION SWITCH OUTPUT CIRCUIT
Diagnosis ProcedureINFOID:0000000001451491
1. CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR OPEN
1. Turn ignition switch OFF.
2. Disconnect BCM and combination switch.
3. Check continuity between BCM harness connector and combi-
nation switch harness connector.
Does continuity exist?
YES >> GO TO 2
NO >> Repair or replace harness.
2. CHECK OUTPUT 1 - 5 SYSTEM CIRCUIT FOR SHORT
Check for continuity between BCM harness connector and ground.
Does continuity exist?
YES >> Repair or replace harness.
NO >> GO TO 3
3. CHECK COMBINATION SWITCH
Check combination switch. Refer to BCS-34, "
Description".
Is the check result normal?
YES >> Replace BCM. Refer to BCS-57, "Removal and Installation of BCM".
NO >> Replace combination switch (applicable parts). Refer to EXL-101, "
Removal and Installation".
Special Repair RequirementINFOID:0000000001451492
1. ADDITIONAL SERVICE WHEN REPLACING BCM
>> Refer to BCS-3, "
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair
Requirement".
SystemBCM Combination switch
Continuity
Connector Terminal Connector Terminal
OUTPUT 1
M2013
M286
Ye s OUTPUT 2 33 7
OUTPUT 3 14 10
OUTPUT 4 34 9
OUTPUT 5 15 8
ALMIA0193ZZ
SystemBCM
GroundContinuity
Connector Terminal
OUTPUT 1
M2013
No OUTPUT 2 33
OUTPUT 3 14
OUTPUT 4 34
OUTPUT 5 15
ALMIA0194ZZ