DESCRIPTION
This DTC is stored when a malfunction in the IG circuit or IG hold circuit of the certification ECU (smart key ECU assembly) is detected.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Note |
---|---|---|---|---|
B2271 |
Ignition Hold Monitor Malfunction |
When either of the following conditions is met (1-trip detection logic*1):
|
|
|
Vehicle Condition |
|||
---|---|---|---|
Pattern 1 |
Pattern 2 |
||
Diagnosis Condition |
Turn the engine switch on (IG). |
○ |
○ |
Malfunction Status |
The IG circuit in the certification ECU (smart key ECU assembly) is malfunctioning. |
○ |
- |
The IG hold circuit in the certification ECU (smart key ECU assembly) is malfunctioning. |
- |
○ |
|
Detection Time |
- |
- |
|
Number of Trips |
1 trip |
1 trip |
HINT:
DTC will be output when conditions for either of the patterns in the table above are met.
Vehicle Condition and Fail-safe Function when Malfunction Detected
Vehicle Condition when Malfunction Detected |
Fail-safe Function when Malfunction Detected |
---|---|
The engine switch cannot be turned on (IG) (the engine cannot be started). |
The power source mode cannot be changed to on (IG). |
DTC No. |
Data List and Active Test |
---|---|
B2271 |
Power Source Control
Starting Control
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
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Click here
HINT:
When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE) |
(a) Disconnect the certification ECU (smart key ECU assembly) connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F1-4 (+B) - Body ground |
Always |
11 to 14 V |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR IN CIRCUIT CONNECTED TO POWER SOURCE |
|
2. |
CHECK HARNESS AND CONNECTOR (GROUND) |
(a) Disconnect the certification ECU (smart key ECU assembly) connector.
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
(a) Reconnect the F1 certification ECU (smart key ECU assembly) connector. |
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
F1-17 (IG1D) - Body ground |
Engine switch on (ACC) → Engine switch on (IG) |
1 V or less → 9 V or higher |
OK |
END (TEMPORARY CONNECTION FAILURE IS SUSPECTED) |
NG |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
Toyota CH-R Service Manual > Power Window Control System: Front Passenger Side Power Window Auto Up / Down Function does not Operate with
Front Passenger Side Power Window Switch
DESCRIPTION
If the manual up and down functions operate normally but the auto up and down
functions do not, the power window control system may be in fail-safe mode.
If power window initialization has not been performed, the auto up and down functions
will not operate.
Click here
WIRING ...
Toyota CH-R Service Manual > Wiper Switch: Inspection
INSPECTION
PROCEDURE
1. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Front Wiper Switch
Tester Connection
Condition
Specified Condition ...