Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000000VJB8 |
Model Year Start: 2016 |
Model: Sienna |
Prod Date Range: [12/2015 - 11/2017] |
Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM: C1ABD,C1ABE; Short to +B in Buzzer; 2016 - 2017 MY Sienna [12/2015 - 11/2017] |
DTC
|
C1ABD
|
Short to +B in Buzzer
|
DTC
|
C1ABE
|
Short to GND or Open in Buzzer
|
DESCRIPTION
-
DTC C1ABD is stored when the blind spot monitor sensor LH detects a +B short in rear cross traffic alert buzzer (blind spot monitor buzzer) circuit.
-
DTC C1ABE is stored when the blind spot monitor sensor LH detects a ground short or open in rear cross traffic alert buzzer (blind spot monitor buzzer) circuit.
DTC No.
|
DTC Detection Condition
|
Trouble Area
|
C1ABD
|
Both of the following conditions are met:
-
Blind spot monitor main switch (warning canceling switch assembly) is on with ignition switch ON.
-
The blind spot monitor sensor is not sending voltage to the buzzer but the buzzer receives voltage above a specified level for a specified period of time.
|
-
Blind spot monitor sensor LH
-
Rear cross traffic alert buzzer (blind spot monitor buzzer)
-
Harness or connector
|
C1ABE
|
Both of the following conditions are met:
-
Blind spot monitor main switch (warning canceling switch assembly) is on with ignition switch ON.
-
The current flowing to the buzzer is below a specified value when buzzer operation voltage is being sent to the buzzer.
|
-
Blind spot monitor sensor LH
-
Rear cross traffic alert buzzer (blind spot monitor buzzer)
-
Harness or connector
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
When checking for DTCs, make sure that the blind spot main switch (warning canceling switch assembly) is on.
-
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
(a) Clear the DTCs (See page
).
(b) Recheck for DTCs and check if the same DTC is output again.
OK:
No DTCs are output.
OK |
|
USE SIMULATION METHOD TO CHECK
(See page
)
|
NG
|
|
|
2.
|
CHECK HARNESS AND CONNECTOR (REAR CROSS TRAFFIC ALERT BUZZER - BATTERY ANDBLIND SPOT MONITOR SENSOR LH)
|
(a) Disconnect the L45 rear cross traffic alert buzzer (blind spot monitor buzzer) connector.
(b) Disconnect the q3 blind spot monitor sensor LH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
L45-2 (BZN) - q3-3 (BUZ)
|
Always
|
Below 1 Ω
|
L45-2 (BZN) - Body ground
|
Always
|
10 kΩ or higher
|
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Switch Condition
|
Specified Condition
|
L45-1 (BZP) - Body ground
|
Ignition switch ON
|
11 to 14 V
|
L45-1 (BZP) - Body ground
|
Ignition Switch off
|
Below 1 V
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
3.
|
REPLACE REAR CROSS TRAFFIC ALERT BUZZER (BLIND SPOT MONITOR BUZZER)
|
(a) Replace the rear cross traffic alert buzzer (blind spot monitor buzzer) (See page
).
NEXT
|
|
|
(a) Clear the DTCs (See page
).
(b) Recheck for DTCs and check if the same DTC is output again.
OK:
No DTCs are output.
OK |
|
END (REAR CROSS TRAFFIC ALERT BUZZER (BLIND SPOT MONITOR BUZZER) WAS DEFECTIVE
|
|