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Communication stop for "Clearance Warning (Intuitive Parking Assist)" is indicated on the "Communication Bus Check" screen of the Techstream.
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![2019 MY RAV4 HV [11/2018 - 02/2019]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): PROBLEM SYMPTOMS TABLE](/t3Portal/stylegraphics/info.gif)
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Communication stop history for "Clearance Warning (Intuitive Parking Assist)" is indicated on the "Communication Bus Check (Detail)" screen of the Techstream. (The Lost Communication Time value for "Clearance Warning (Intuitive Parking Assist)" is 6 or more.)
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Communication system DTCs (DTCs that start with U) that correspond to "Clearance Warning ECU Communication Stop Mode" in "DTC Combination Table" are output.
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| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001FYGF |
| Model Year Start: 2019 | Model: RAV4 HV | Prod Date Range: [11/2018 - 02/2019] |
| Title: NETWORKING: CAN COMMUNICATION SYSTEM (for HV Model): Clearance Warning ECU Communication Stop Mode; 2019 MY RAV4 HV [11/2018 - 02/2019] | ||
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Clearance Warning ECU Communication Stop Mode |
DESCRIPTION
|
Detection Item |
Symptom |
Trouble Area |
|---|---|---|
|
Clearance Warning ECU Communication Stop Mode |
Any of the following conditions are met: |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
NOTICE:
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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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- Inspect the fuses for circuits related to this system before performing the following procedure.
- Before measuring the resistance of the CAN bus, turn the power 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 (-) auxiliary battery terminal and leave the vehicle for 1 minute or more before measuring the resistance.
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After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.
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Some parts must be initialized and set when replacing or removing and installing parts.
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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 power 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.
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After the repair, perform the CAN bus check and check that all the ECUs and sensors connected to the CAN communication system are displayed as normal.
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HINT:
- Before disconnecting related connectors for inspection, push in on each connector body to check that the connector is not loose or disconnected.
- When a connector is disconnected, check that the terminals and connector body are not cracked, deformed or corroded.
PROCEDURE
|
1. |
CHECK FOR OPEN IN CAN BUS WIRE (CLEARANCE WARNING ECU ASSEMBLY BRANCH WIRE) |
(a) Disconnect the cable from the negative (-) auxiliary battery terminal.
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(b) Disconnect the clearance warning ECU assembly connector. |
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(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
for TMC Made
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
H4-17 (R1) - H4-18 (R2) |
Cable disconnected from negative (-) auxiliary battery terminal |
54 to 69 Ω |
for TMMC Made
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G25-17 (R1) - G25-18 (R2) |
Cable disconnected from negative (-) auxiliary battery terminal |
54 to 69 Ω |
| NG |
|
REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR |
|
|
2. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) |
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(a) Measure the resistance according to the value(s) in the table below. Standard Resistance: for TMC Made
for TMMC Made
|
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(b) Reconnect the cable to the negative (-) auxiliary battery terminal.
NOTICE:
When disconnecting the cable, some systems need to be initialized after the cable is reconnected.
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(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
for TMC Made
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
H4-1 (IG) - Body ground |
Power switch on (IG) |
11 to 14 V |
|
Power switch off |
Below 1 V |
for TMMC Made
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
G25-1 (IG) - Body ground |
Power switch on (IG) |
11 to 14 V |
|
Power switch off |
Below 1 V |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
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