DESCRIPTION
There may be a short circuit between one of the CAN bus lines and GND when there is no resistance between terminal 6 (CA3H) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3, or terminal 21 (CA3L) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3.
Symptom |
Trouble Area |
---|---|
No resistance exists between terminal 6 (CA3H) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3, or terminal 21 (CA3L) of the central gateway ECU (network gateway ECU) and terminal 4 (CG) of the DLC3. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
Click here
DTC check procedure: Turn the ignition switch ON and wait at least approximately 60 seconds.
Click here
HINT:
PROCEDURE
1. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 3 CAN JUNCTION CONNECTOR) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the F114 No. 3 CAN junction connector.
(c) Measure the resistance according to the value(s) in the table below.
*1 |
DLC3 |
- |
- |
*a |
Front view of wire harness connector (to No. 3 CAN Junction Connector) |
*b |
to DCM (Telematics Transceiver) (w/ Telematics Transceiver) |
*c |
to Radio and Display Receiver Assembly (for Radio and Display Type) |
*d |
to Central Gateway ECU (Network Gateway ECU) |
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
Connected to |
---|---|---|---|
F114-8 (CANH) - F41-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
DCM (Telematics transceiver)*1 |
F114-19 (CANL) - F41-4 (CG) |
|||
F114-9 (CANH) - F41-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
Radio and display receiver assembly*2 |
F114-20 (CANL) - F41-4 (CG) |
|||
F114-10 (CANH) - F41-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
Central gateway ECU (network gateway ECU) |
F114-21 (CANL) - F41-4 (CG) |
|||
F114-11 (CANH) - F41-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
Central gateway ECU (network gateway ECU) |
F114-22 (CANL) - F41-4 (CG) |
Result |
Proceed to |
---|---|
OK |
A |
NG (Line to central gateway ECU (network gateway ECU)) |
B |
NG (Line to ECU or sensor) |
C |
A | ![]() |
REPLACE NO. 3 CAN JUNCTION CONNECTOR |
C | ![]() |
GO TO STEP 3 |
|
2. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (NO. 3 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
(a) Disconnect the F74 central gateway ECU (network gateway ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
*1 |
DLC3 |
- |
- |
*a |
Front view of wire harness connector (to No. 3 CAN Junction Connector) |
*b |
to Central Gateway ECU (Network Gateway ECU) |
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F114-10 (CANH) - F41-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
F114-21 (CANL) - F41-4 (CG) |
||
F114-11 (CANH) - F41-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
F114-22 (CANL) - F41-4 (CG) |
OK | ![]() |
REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) |
NG | ![]() |
REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) |
3. |
CHECK FOR SHORT TO GND IN CAN BUS LINE (ECU OR SENSOR) |
(a) Reconnect all wire harness connectors.
(b) Disconnect the connector that includes terminals CANH and CANL from the ECU or sensor to which the bus line shorted to GND is connected.
Click here
(c) Measure the resistance according to the value(s) in the table below.
*1 |
DLC3 |
- |
- |
*a |
Component with harness connected (Central Gateway ECU (Network Gateway ECU)) |
- |
- |
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F74-6 (CA3H) - F41-4 (CG) |
Cable disconnected from negative (-) battery terminal |
200 Ω or higher |
F74-21 (CA3L) - F41-4 (CG) |
HINT:
OK | ![]() |
REPLACE ECU OR SENSOR |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
Toyota CH-R Service Manual > Navigation System: Freeze Frame Data
FREEZE FRAME DATA
CHECK FREEZE FRAME DATA
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Navigation System / Trouble
Codes.
Body Electrical > Navigation System > Trouble Codes
(e) ...
Toyota CH-R Service Manual > Tire Pressure Warning System: Transmitter ID not Registered (C2171/71)
DESCRIPTION
The IDs of each tire pressure warning valve and transmitter are registered to
the tire pressure warning ECU and receiver.
When the ECU detects that a transmitter ID code is not registered in the ECU,
this DTC is stored.
DTC No.
Detection Item
DTC D ...