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 > Steering Lock System: Power Source Control ECU Malfunction (B2782)
DESCRIPTION
The certification ECU (smart key ECU assembly) has a power source mode switching
function.
This DTC is stored when the IGEI input (the steering lock motor activation permission
signal) sent directly from the certification ECU (smart key ECU assembly) to the
steering lock ECU (ste ...
Toyota CH-R Service Manual > Rear Bumper: Removal
REMOVAL
PROCEDURE
1. REMOVE REAR BUMPER SIDE SEAL LH
(a) Remove the 7 clips and rear bumper side seal LH.
2. REMOVE REAR BUMPER SIDE SEAL RH
HINT:
Use the same procedure as for the LH side.
3. SEPARATE QUARTER OUTSIDE MOULDING LH
(a) ...