DESCRIPTION
Detection Item |
Symptom |
Trouble Area |
---|---|---|
Main Body ECU Communication Stop Mode |
Any of the following conditions are met:
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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DTC check procedure: Turn the ignition switch to ON, turn the blind spot monitor system on using the blind spot monitor main switch (ON/OFF switch), turn the LDA main switch on and wait for approximately 20 seconds or more.
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HINT:
PROCEDURE
1. |
CHECK FOR OPEN IN CAN BUS LINES (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) BRANCH LINE) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the main body ECU (multiplex network body ECU) connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG | ![]() |
REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
|
2. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) |
(a) Remove the main body ECU (multiplex network body ECU).
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(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
NOTICE: Perform this inspection with the wire harness connected to the instrument panel junction block assembly. |
|
(c) Reconnect the cable to the negative (-) battery terminal.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
MB-31 (BECU) - Body ground |
Always |
11 to 14 V |
MB-30 (ACC) - Body ground |
Ignition switch ACC |
11 to 14 V |
MB-32 (IG) - Body ground |
Ignition switch ON |
11 to 14 V |
NOTICE:
Perform this inspection with the wire harness connected to the instrument panel junction block assembly.
Result |
Proceed to |
---|---|
OK |
A |
NG (BECU) |
B |
NG (ACC) |
C |
NG (IG) |
D |
NG (GND1) |
E |
A | ![]() |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
C | ![]() |
GO TO LIGHTING (INT) SYSTEM (ACC SIGNAL CIRCUIT) |
D | ![]() |
GO TO LIGHTING (INT) SYSTEM (IG SIGNAL CIRCUIT) |
E | ![]() |
GO TO STEP 4 |
|
3. |
CHECK HARNESS AND CONNECTOR (BECU SIGNAL CIRCUIT) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the instrument panel junction block assembly connector.
(c) Reconnect the cable to the negative (-) battery terminal.
(d) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
OK | ![]() |
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR (BECU SIGNAL CIRCUIT) |
4. |
CHECK HARNESS AND CONNECTOR (GROUND CIRCUIT) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the instrument panel junction block assembly connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK | ![]() |
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) |
Toyota CH-R Service Manual > Lin Communication System: P/W Master Switch Communication Stop (B1206)
DESCRIPTION
This DTC is stored when LIN communication between the multiplex network master
switch assembly and main body ECU (multiplex network body ECU) stops for 10 seconds
or more.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
...
Toyota CH-R Service Manual > Blind Spot Monitor System: Power Source Circuit
DESCRIPTION
This circuit provides power to operate the blind spot monitor sensor.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following
procedure.
PROCEDURE
1.
CHECK HARNESS AND CONNECTOR ...