Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Check Bus 4 Line for Short to +B
DESCRIPTION
There may be a short circuit between one of the CAN bus lines and +B when there is no resistance between terminal 22 (CA2H) of the network gateway ECU and terminal 16 (BAT) of the DLC3, or terminal 7 (CA2L) of the network gateway ECU and terminal 16 (BAT) of the DLC3.
| Symptom | Trouble Area |
|---|---|
| There is no resistance between terminal 22 (CA2H) of the network gateway ECU and terminal 16 (BAT) of the DLC3, or terminal 7 (CA2L) of the network gateway ECU and terminal 16 (BAT) of the DLC3. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
NOTICE:
- Before measuring the resistance of the CAN bus, turn the engine switch off and leave the vehicle for 1 minute or more without operating the key or any switches, or opening or closing the doors. After that, disconnect the cable from the negative (-) battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.
-
After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.
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-
Because the order of diagnosis is important to allow correct diagnosis, make sure to begin troubleshooting using How to Proceed with Troubleshooting when CAN communication system related DTCs are output.
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-
After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.
DTC check procedure: Turn the engine switch on (IG) and wait for 1 minute or more. Then operate the suspected malfunctioning system and drive the vehicle at 60 km/h (37 mph) or more for 5 minutes or more.
-
After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed.
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HINT:
- Operating the engine switch, any other switches or a door triggers related ECU and sensor communication on the CAN. This communication will cause the resistance value to change.
- Even after DTCs are cleared, if a DTC is stored again after driving the vehicle for a while, the malfunction may be occurring due to vibration of the vehicle. In such a case, wiggling the ECUs or wire harness while performing the inspection below may help determine the cause of the malfunction.
PROCEDURE
| 1. | CHECK FOR SHORT TO +B IN CAN BUS LINE (NETWORK GATEWAY ECU) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the J75 network gateway ECU connector.
| *1 | DLC3 | - | - |
| *a | Front view of wire harness connector (to Network Gateway ECU) | - | - |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| J75-22 (CA2H) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher |
| J75-7 (CA2L) - J141-16 (BAT) |
| Result | Proceed to |
|---|---|
| OK | A |
| NG (w/o Rear No. 2 Seat) | B |
| NG (w/ Rear No. 2 Seat) | C |
| A | .gif) | REPLACE NETWORK GATEWAY ECU |
| C | | GO TO STEP 7 |
|
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| 2. | CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 9 CAN JUNCTION CONNECTOR) |
(a) Reconnect the J75 network gateway ECU connector.
(b) Disconnect the R40 No. 9 CAN junction connector.
| *1 | DLC3 | - | - |
| *a | Front view of wire harness connector (to No. 9 CAN Junction Connector) | *b | to No. 12 CAN Junction Connector |
| *c | to Tire Pressure Warning ECU and Receiver | *d | to No. 8 CAN Junction Connector |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition | Connected to |
|---|---|---|---|
| R40-9 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | No. 12 CAN junction connector |
| R40-20 (CANL) - J141-16 (BAT) | |||
| R40-10 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Tire pressure warning ECU and receiver |
| R40-21 (CANL) - J141-16 (BAT) | |||
| R40-11 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | No. 8 CAN junction connector |
| R40-22 (CANL) - J141-16 (BAT) |
| Result | Proceed to |
|---|---|
| OK | A |
| NG (No. 8 CAN junction connector main line) | B |
| NG (ECU or sensor bus line) | C |
| NG (No. 12 CAN junction connector main line) | D |
| A | | REPLACE NO. 9 CAN JUNCTION CONNECTOR |
| C | | GO TO STEP 12 |
| D | | GO TO STEP 5 |
|
| 3. | CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR) |
(a) Reconnect the R40 No. 9 CAN junction connector.
(b) Disconnect the A86 No. 1 CAN junction connector.
| *1 | DLC3 | - | - |
| *a | Front view of wire harness connector (to No. 1 CAN Junction Connector) | *b | to No. 8 CAN Junction Connector |
| *c | to Network Gateway ECU | *d | to Skid Control ECU (Brake Actuator Assembly) |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition | Connected to |
|---|---|---|---|
| A86-8 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | No. 8 CAN junction connector |
| A86-19 (CANL) - J141-16 (BAT) | |||
| A86-9 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Network gateway ECU |
| A86-20 (CANL) - J141-16 (BAT) | |||
| A86-10 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Skid control ECU (brake actuator assembly) |
| A86-21 (CANL) - J141-16 (BAT) |
| Result | Proceed to |
|---|---|
| OK | A |
| NG (Network gateway ECU main line) | B |
| NG (ECU or sensor bus line) | C |
| NG (No. 8 CAN junction connector main line) | D |
| A | | REPLACE NO. 1 CAN JUNCTION CONNECTOR |
| B | | REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NETWORK GATEWAY ECU - NO. 1 CAN JUNCTION CONNECTOR) |
| C | | GO TO STEP 12 |
|
| 4. | CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 8 CAN JUNCTION CONNECTOR) |
(a) Reconnect the A86 No. 1 CAN junction connector.
(b) Disconnect the R37 No. 8 CAN junction connector.
| *1 | DLC3 | - | - |
| *a | Front view of wire harness connector (to No. 8 CAN Junction Connector) | *b | to No. 9 CAN Junction Connector |
| *c | to No. 1 CAN Junction Connector | *d | to Occupant Detection ECU |
| *e | to 4WD ECU Assembly (for AWD) | - | - |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition | Connected to |
|---|---|---|---|
| *: for AWD | |||
| R37-1 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | No. 9 CAN junction connector |
| R37-12 (CANL) - J141-16 (BAT) | |||
| R37-2 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | No. 1 CAN junction connector |
| R37-13 (CANL) - J141-16 (BAT) | |||
| R37-3 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Occupant detection ECU |
| R37-14 (CANL) - J141-16 (BAT) | |||
| R37-4 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | 4WD ECU assembly* |
| R37-15 (CANL) - J141-16 (BAT) | |||
| Result | Proceed to |
|---|---|
| OK | A |
| NG (No. 1 CAN junction connector main line) | B |
| NG (ECU or sensor bus line) | C |
| NG (No. 9 CAN junction connector main line) | D |
| A | | REPLACE NO. 8 CAN JUNCTION CONNECTOR |
| B | | REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 8 CAN JUNCTION CONNECTOR) |
| C | | GO TO STEP 12 |
| D | | REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - NO. 9 CAN JUNCTION CONNECTOR) |
| 5. | CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 12 CAN JUNCTION CONNECTOR) |
(a) Reconnect the R40 No. 9 CAN junction connector.
(b) Disconnect the S63 No. 12 CAN junction connector.
| *1 | DLC3 | - | - |
| *a | Front view of wire harness connector (to No. 12 CAN Junction Connector) | *b | to No. 7 CAN Junction Connector |
| *c | to No. 9 CAN Junction Connector | *d | to Absorber Control ECU (w/ AVS) |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition | Connected to |
|---|---|---|---|
| *: w/ AVS | |||
| S63-8 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | No. 7 CAN junction connector |
| S63-19 (CANL) - J141-16 (BAT) | |||
| S63-9 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | No. 9 CAN junction connector |
| S63-20 (CANL) - J141-16 (BAT) | |||
| S63-11 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Absorber control ECU* |
| S63-22 (CANL) - J141-16 (BAT) | |||
| Result | Proceed to |
|---|---|
| OK | A |
| NG (No. 9 CAN junction connector main line) | B |
| NG (ECU or sensor bus line) | C |
| NG (No. 7 CAN junction connector main line) | D |
| A | | REPLACE NO. 12 CAN JUNCTION CONNECTOR |
| B | | REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - NO. 12 CAN JUNCTION CONNECTOR) |
| C | | GO TO STEP 12 |
|
| 6. | CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 7 CAN JUNCTION CONNECTOR) |
(a) Reconnect the S63 No. 12 CAN junction connector.
(b) Disconnect the J99 No. 7 CAN junction connector.
| *1 | DLC3 | - | - |
| *a | Front view of wire harness connector (to No. 7 CAN Junction Connector) | *b | to Airbag Sensor Assembly |
| *c | to Steering Sensor | *d | to Yaw Rate Sensor Assembly (w/ TFT Meter Type Combination Meter Assembly) |
| *e | to Power Steering ECU Assembly | *f | to No. 12 CAN Junction Connector |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition | Connected to |
|---|---|---|---|
| *: w/ TFT Meter Type Combination Meter Assembly | |||
| J99-1 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Airbag sensor assembly |
| J99-12 (CANL) - J141-16 (BAT) | |||
| J99-2 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Steering sensor |
| J99-13 (CANL) - J141-16 (BAT) | |||
| J99-3 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Yaw rate sensor assembly* |
| J99-14 (CANL) - J141-16 (BAT) | |||
| J99-4 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Power steering ECU assembly |
| J99-15 (CANL) - J141-16 (BAT) | |||
| J99-6 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | No. 12 CAN junction connector |
| J99-17 (CANL) - J141-16 (BAT) | |||
| Result | Proceed to |
|---|---|
| OK | A |
| NG (No. 12 CAN junction connector main line) | B |
| NG (ECU or sensor bus line) | C |
| A | | REPLACE NO. 7 CAN JUNCTION CONNECTOR |
| B | | REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 7 CAN JUNCTION CONNECTOR - NO. 12 CAN JUNCTION CONNECTOR) |
| C | | GO TO STEP 12 |
| 7. | CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 9 CAN JUNCTION CONNECTOR) |
(a) Reconnect the J75 network gateway ECU connector.
(b) Disconnect the R56 No. 9 CAN junction connector.
| *1 | DLC3 | - | - |
| *a | Front view of wire harness connector (to No. 9 CAN Junction Connector) | *b | to No. 12 CAN Junction Connector |
| *c | to Tire Pressure Warning ECU and Receiver | *d | to No. 8 CAN Junction Connector |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition | Connected to |
|---|---|---|---|
| R56-9 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | No. 12 CAN junction connector |
| R56-20 (CANL) - J141-16 (BAT) | |||
| R56-10 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Tire pressure warning ECU and receiver |
| R56-21 (CANL) - J141-16 (BAT) | |||
| R56-11 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | No. 8 CAN junction connector |
| R56-22 (CANL) - J141-16 (BAT) |
| Result | Proceed to |
|---|---|
| OK | A |
| NG (No. 8 CAN junction connector main line) | B |
| NG (ECU or sensor bus line) | C |
| NG (No. 12 CAN junction connector main line) | D |
| A | | REPLACE NO. 9 CAN JUNCTION CONNECTOR |
| C | | GO TO STEP 12 |
| D | | GO TO STEP 10 |
|
| 8. | CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 1 CAN JUNCTION CONNECTOR) |
(a) Reconnect the R56 No. 9 CAN junction connector.
(b) Disconnect the A86 No. 1 CAN junction connector.
| *1 | DLC3 | - | - |
| *a | Front view of wire harness connector (to No. 1 CAN Junction Connector) | *b | to No. 8 CAN Junction Connector |
| *c | to Network Gateway ECU | *d | to Skid Control ECU (Brake Actuator Assembly) |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition | Connected to |
|---|---|---|---|
| A86-8 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | No. 8 CAN junction connector |
| A86-19 (CANL) - J141-16 (BAT) | |||
| A86-9 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Network gateway ECU |
| A86-20 (CANL) - J141-16 (BAT) | |||
| A86-10 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Skid control ECU (brake actuator assembly) |
| A86-21 (CANL) - J141-16 (BAT) |
| Result | Proceed to |
|---|---|
| OK | A |
| NG (Network gateway ECU main line) | B |
| NG (ECU or sensor bus line) | C |
| NG (No. 8 CAN junction connector main line) | D |
| A | | REPLACE NO. 1 CAN JUNCTION CONNECTOR |
| B | | REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NETWORK GATEWAY ECU - NO. 1 CAN JUNCTION CONNECTOR) |
| C | | GO TO STEP 12 |
|
| 9. | CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 8 CAN JUNCTION CONNECTOR) |
(a) Reconnect the A86 No. 1 CAN junction connector.
(b) Disconnect the R55 No. 8 CAN junction connector.
| *1 | DLC3 | - | - |
| *a | Front view of wire harness connector (to No. 8 CAN Junction Connector) | *b | to No. 9 CAN Junction Connector |
| *c | to No. 1 CAN Junction Connector | *d | to Occupant Detection ECU |
| *e | to 4WD ECU Assembly (for AWD) | - | - |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition | Connected to |
|---|---|---|---|
| *: for AWD | |||
| R55-1 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | No. 9 CAN junction connector |
| R55-12 (CANL) - J141-16 (BAT) | |||
| R55-2 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | No. 1 CAN junction connector |
| R55-13 (CANL) - J141-16 (BAT) | |||
| R55-3 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Occupant detection ECU |
| R55-14 (CANL) - J141-16 (BAT) | |||
| R55-4 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | 4WD ECU assembly* |
| R55-15 (CANL) - J141-16 (BAT) | |||
| Result | Proceed to |
|---|---|
| OK | A |
| NG (No. 1 CAN junction connector main line) | B |
| NG (ECU or sensor bus line) | C |
| NG (No. 9 CAN junction connector main line) | D |
| A | | REPLACE NO. 8 CAN JUNCTION CONNECTOR |
| B | | REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 1 CAN JUNCTION CONNECTOR - NO. 8 CAN JUNCTION CONNECTOR) |
| C | | GO TO STEP 12 |
| D | | REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - NO. 9 CAN JUNCTION CONNECTOR) |
| 10. | CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 12 CAN JUNCTION CONNECTOR) |
(a) Reconnect the R56 No. 9 CAN junction connector.
(b) Disconnect the S92 No. 12 CAN junction connector.
| *1 | DLC3 | - | - |
| *a | Front view of wire harness connector (to No. 12 CAN Junction Connector) | *b | to No. 7 CAN Junction Connector |
| *c | to No. 9 CAN Junction Connector | *d | to Absorber Control ECU (w/ AVS) |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition | Connected to |
|---|---|---|---|
| *: w/ AVS | |||
| S92-8 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | No. 7 CAN junction connector |
| S92-19 (CANL) - J141-16 (BAT) | |||
| S92-9 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | No. 9 CAN junction connector |
| S92-20 (CANL) - J141-16 (BAT) | |||
| S92-11 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Absorber control ECU* |
| S92-22 (CANL) - J141-16 (BAT) | |||
| Result | Proceed to |
|---|---|
| OK | A |
| NG (No. 9 CAN junction connector main line) | B |
| NG (ECU or sensor bus line) | C |
| NG (No. 7 CAN junction connector main line) | D |
| A | | REPLACE NO. 12 CAN JUNCTION CONNECTOR |
| B | | REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 9 CAN JUNCTION CONNECTOR - NO. 12 CAN JUNCTION CONNECTOR) |
| C | | GO TO STEP 12 |
|
| 11. | CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 7 CAN JUNCTION CONNECTOR) |
(a) Reconnect the S92 No. 12 CAN junction connector.
(b) Disconnect the J99 No. 7 CAN junction connector.
| *1 | DLC3 | - | - |
| *a | Front view of wire harness connector (to No. 7 CAN Junction Connector) | *b | to Airbag Sensor Assembly |
| *c | to Steering Sensor | *d | to Yaw Rate Sensor Assembly (w/ TFT Meter Type Combination Meter Assembly) |
| *e | to Power Steering ECU Assembly | *f | to No. 12 CAN Junction Connector |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
| Tester Connection | Condition | Specified Condition | Connected to |
|---|---|---|---|
| *: w/ TFT Meter Type Combination Meter Assembly | |||
| J99-1 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Airbag sensor assembly |
| J99-12 (CANL) - J141-16 (BAT) | |||
| J99-2 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Steering sensor |
| J99-13 (CANL) - J141-16 (BAT) | |||
| J99-3 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Yaw rate sensor assembly* |
| J99-14 (CANL) - J141-16 (BAT) | |||
| J99-4 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | Power steering ECU assembly |
| J99-15 (CANL) - J141-16 (BAT) | |||
| J99-6 (CANH) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher | No. 12 CAN junction connector |
| J99-17 (CANL) - J141-16 (BAT) | |||
| Result | Proceed to |
|---|---|
| OK | A |
| NG (No. 12 CAN junction connector main line) | B |
| NG (ECU or sensor bus line) | C |
| A | | REPLACE NO. 7 CAN JUNCTION CONNECTOR |
| B | | REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 7 CAN JUNCTION CONNECTOR - NO. 12 CAN JUNCTION CONNECTOR) |
|
| 12. | CHECK FOR SHORT TO +B IN CAN BUS LINE (ECU, 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 +B is connected.
Click here
(c) Measure the resistance according to the value(s) in the table below.
| *1 | DLC3 | - | - |
| *a | Component with harness connected (Network Gateway ECU) | - | - |
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| J75-22 (CA2H) - J141-16 (BAT) | Cable disconnected from negative (-) battery terminal | 6 kΩ or higher |
| J75-7 (CA2L) - J141-16 (BAT) |
HINT:
If the resistance changes to 6 kΩ or higher when the connector is disconnected from the ECU or sensor, there may be a short in the ECU or sensor.
| OK | | REPLACE CORRESPONDING ECU OR SENSOR |
| NG | | REPAIR OR REPLACE CORRESPONDING ECU OR SENSOR CAN BUS LINE OR CONNECTOR |
Open in One Side of Bus 3 Branch Line
DESCRIPTION If an ECU or sensor is not displayed on the CAN Bus Check screen of the Techstream and some ECUs and sensors repeatedly appear and disappear from the screen when the CAN main bus lines are ...
Check Bus 4 Lines for Short Circuit
DESCRIPTION There may be a short circuit between the bus 4 main lines and/or bus 4 branch lines when the resistance between terminals 22 (CA2H) and 7 (CA2L) of the network gateway ECU is below 54 Ω. ...
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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