DESCRIPTION
There may be an open circuit in one of the CAN main bus lines when the resistance between terminals 15 (CA5H) and 16 (CA5L) of the central gateway ECU (network gateway ECU) is 70 Ω or higher.
Symptom |
Trouble Area |
---|---|
Resistance between terminals 15 (CA5H) and 16 (CA5L) of the central gateway ECU (network gateway ECU) is 70 Ω or higher. |
|
This malfunction is not related to the lines of a CAN branch or to ECUs or sensors connected to a CAN branch.
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 52 seconds or more.
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HINT:
PROCEDURE
1. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 3 CAN JUNCTION CONNECTOR) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the No. 3 CAN junction connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
Result |
Proceed to |
---|---|
OK |
A |
NG (Line to central gateway ECU (network gateway ECU)) |
B |
NG (Line to combination meter assembly) |
C |
A |
REPLACE NO. 3 CAN JUNCTION CONNECTOR |
C |
GO TO STEP 3 |
|
2. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 3 CAN JUNCTION CONNECTOR) |
(a) Reconnect the F114 No. 3 CAN junction connector.
(b) Disconnect the central gateway ECU (network gateway ECU) connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK |
REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) |
NG |
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 3 CAN JUNCTION CONNECTOR) |
3. |
CHECK FOR OPEN IN CAN MAIN BUS LINES (COMBINATION METER ASSEMBLY - NO. 3 CAN JUNCTION CONNECTOR) |
(a) Reconnect the F114 No. 3 CAN junction connector.
(b) Disconnect the combination meter assembly connector.
(c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
OK |
REPLACE COMBINATION METER ASSEMBLY |
NG |
REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (COMBINATION METER ASSEMBLY - NO. 3 CAN JUNCTION CONNECTOR) |
Toyota CH-R Service Manual > Lighting System: Light Sensor Circuit Malfunction (B1244)
DESCRIPTION
The automatic light control sensor detects ambient light. The sensor creates
an electrical signal based on the amount of light detected, and sends the signal
to the main body ECU (multiplex network body ECU). The main body ECU (multiplex
network body ECU) turns on or off the headl ...
Toyota CH-R Service Manual > General Maintenance: Engine
ENGINE
HINT:
Perform these procedures after the engine has cooled down.
INSPECT DRIVE BELT
(a) Check the drive belt.
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INSPECT ENGINE OIL AND OIL FILTER
(a) Check the engine oil and oil filter.
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INSPECT ENGINE COOLANT
(a) Check the engine coolant.
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...