Toyota Camry (XV70): Restraints Occupant Classification System Module Communication Stop Mode
DESCRIPTION
|
Detection Item | Symptom |
Trouble Area |
|---|---|---|
| Restraints Occupant Classification System Module 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:
- 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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- Before measuring the resistance of the CAN bus, turn the ignition 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 ignition 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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- After performing repairs, perform the DTC check procedure and confirm that the DTCs are not output again.
DTC check procedure: Turn the ignition switch to ON 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 as normal.
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- Inspect the fuses for circuits related to this system before performing the following procedure.
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 LINES (OCCUPANT DETECTION ECU BRANCH LINE) |
(a) Disconnect the cable from the negative (-) battery terminal.
(b) Disconnect the a6 occupant detection ECU connector.
| (c) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| NG | .gif) | REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (OCCUPANT DETECTION ECU) |
|
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| 2. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE CIRCUIT) |
| (a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
(b) Reconnect the cable to the negative (-) battery terminal.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
a6-6 (IG2) - Body ground |
Ignition switch ON | 11 to 14 V |
| OK | | REPLACE OCCUPANT DETECTION ECU
|
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) |
READ NEXT:
Open in Bus 1 Main Bus Line
DESCRIPTION There may be an open circuit in one of the CAN main bus lines when the resistance between terminals 23 (CA1H) and 8 (CA1L) of the central gateway ECU (network gateway ECU) is 70 Ω or
Check Bus 1 Lines for Short Circuit
DESCRIPTION There may be a short circuit between the CAN main bus lines and/or CAN branch lines when the resistance between terminals 23 (CA1H) and 8 (CA1L) of the central gateway ECU (network gateway
Check Bus 1 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 23 (CA1H) of the central gateway ECU (network gateway ECU) and terminal 16
SEE MORE:
Installation
INSTALLATION PROCEDURE 1. SET NO. 1 CYLINDER TO TDC (COMPRESSION)
(a) Confirm that the timing mark (cutout) on the crankshaft pulley is aligned with the "0" timing mark of the timing chain cover assembly.
*a Timing Mark (Cutout)
*b "0" Timing Mark
Navigation Processor Malfunction (B15AD)
DESCRIPTION These DTCs are stored when a malfunction occurs in the navigation ECU.
DTC No. Detection Item
DTC Detection Condition Trouble Area
B15AD Navigation Processor Malfunction
When either condition below is met:
A short to ground, short to +B or open occ
