Toyota Tacoma (2015-2018) Service Manual: Short to +B in Buzzer (C1ABD,C1ABE)
DESCRIPTION
- DTC C1ABD is stored when the blind spot monitor sensor RH 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 RH detects a ground short or open in rear cross traffic alert buzzer (blind spot monitor buzzer) circuit.
|
DTC Code |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
C1ABD |
|
|
|
C1ABE |
|
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- When checking for DTCs, make sure that the blind spot main switch assembly (warning canceling switch assembly) is on.
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
|
1. |
CHECK DTC |
(a) Clear the DTCs (See page .gif)
).
(b) Recheck for DTCs and check if the same DTC is output again (See page
).
OK:
No DTCs are output.
| OK | .gif) |
USE SIMULATION METHOD TO CHECK |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (REAR CROSS TRAFFIC ALERT BUZZER - BATTERY AND BLIND SPOT MONITOR SENSOR RH) |
(a) Disconnect the R37 rear cross traffic alert buzzer (blind spot monitor buzzer) connector.
(b) Disconnect the B13 blind spot monitor sensor RH connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
R37-2 (BZN) - B13-3 (BUS) |
Always |
Below 1 Ω |
|
R37-2 (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 |
|---|---|---|
|
R37-1 (BZP) - Body ground |
Ignition switch ON |
11 to 14 V |
|
R37-1 (BZP) - Body ground |
Ignition switch off |
Below 1 V |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
REPLACE BLIND SPOT MONITOR BUZZER (REAR CROSS TRAFFIC ALERT BUZZER) |
(a) Replace the rear cross traffic alert buzzer (blind spot monitor buzzer) with a new or normally functioning one.
- for Access Cab:
- for Double Cab:
|
|
4. |
CHECK DTC |
(a) Clear the DTCs (See page ).
(b) Recheck for DTCs and check if the same DTC is output again (See page
).
OK:
No DTCs are output.
| OK | |
END (REAR CROSS TRAFFIC ALERT BUZZER (BLIND SPOT MONITOR BUZZER) WAS DEFECTIVE) |
| NG | |
REPLACE BLIND SPOT MONITOR SENSOR RH |
Lost Communication with ECM / PCM "A" (U0100,U0126,U0129,U0142)
DESCRIPTION
These DTCs are stored if there is a malfunction in the CAN communication system
connected to the blind spot monitor sensor.
HINT:
If CAN communication system DTCs are stored, they may ...
Blind Spot Monitor Slave Module Beam Axis Inspection Incomplete (C1ABC)
DESCRIPTION
This DTC is stored when a beam axis inspection has not been performed for the
blind spot monitor sensor RH.
HINT:
This DTC is always stored after replacing a blind spot monitor sensor ...
Other materials:
Precaution
PRECAUTION
1. IGNITION SWITCH EXPRESSIONS
(a) The type of ignition switch used on this model differs according to the specifications
of the vehicle. The expressions listed in the table below are used in this section.
Expression
Ignition Switch (Position)
Engine ...
Clutch Pedal Switch
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. CHECK CLUTCH START SYSTEM
(a) Check that the engine does not start when the clutch pedal is released.
(b) Check that the engine starts when the clutch pedal is fully depressed.
If necessary, replace the clutch start switch assembly.
...
Inspection
INSPECTION
PROCEDURE
1. REMOVE SPIRAL CABLE SUB-ASSEMBLY WITH SENSOR
(a) If there are any defects as mentioned below, replace the spiral cable sub-assembly
with a new one:
Scratches, cracks, dents or chips on the connector or the spiral cable sub-assembly.
(b) Inspect the spiral ca ...
