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
NOTICE:
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DTC check procedure: Turn the ignition switch to ON and wait at least approximately 8 seconds.
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HINT:
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 occupant detection ECU connector. |
|
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Y6-5 (CANH) - Y6-4 (CANL) |
Cable disconnected from negative (-) battery terminal |
54 to 69 Ω |
NG | ![]() |
REPAIR OR REPLACE CAN BRANCH LINES OR CONNECTOR (OCCUPANT DETECTION ECU) |
|
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 |
Switch Condition |
Specified Condition |
---|---|---|
Y6-6 (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) |
Toyota CH-R Service Manual > Immobiliser System(w/ Smart Key System): Antenna Coil Open / Short (B2784)
DESCRIPTION
When an open or short circuit is detected in the transponder key amplifier coil
built into the engine switch, the certification ECU (smart key ECU assembly) stores
this DTC. This DTC is also stored as a history DTC.
DTC No.
Detection Item
DTC Detect ...
Toyota CH-R Service Manual > Tire Pressure Warning System: No Signal from Transmitter ID1 (C2121/21-C2125/25,C2181/81-C2185/85)
DESCRIPTION
The tire pressure warning valve and transmitters that are installed in the tire
and wheel assemblies measure the tire pressures. The measured values are transmitted
to the tire pressure warning ECU and receiver in the vehicle as radio waves. The
ECU compares the measured tire pres ...