Toyota Tundra (2015 year). Manual — part 75
Result
RESULT
PROCEED TO
OK
A
NG (for Column Shift Type)
B
NG (for Floor Shift Type)
C
B
REPLACE NAVIGATION RECEIVER ASSEMBLY
C
REPLACE NAVIGATION RECEIVER ASSEMBLY
A
END (NAVIGATION ANTENNA ASSEMBLY IS
DEFECTIVE)
NAVIGATION: NAVIGATION SYSTEM: B15C0,B15C1; Short in GP...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM00000182V0MTX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: NAVIGATION: NAVIGATION SYSTEM: B15C2; Speed Signal Malfunction; 2015 MY Tundra [08/2014 -
]
DTC
B15C2
Speed Signal Malfunction
DESCRIPTION
The navigation receiver assembly receives a vehicle speed signal from the combination meter assembly and
information from the navigation antenna assembly, and then adjusts the vehicle position.
The navigation receiver assembly stores this DTC when the difference between the speed information that the
navigation antenna assembly receives and the SPD pulse received from the combination meter assembly
becomes large.
HINT:
CODE
DTC DETECTION CONDITION
TROUBLE AREA
B15C2
A difference between the GPS speed and SPD pulse is
detected.
Meter/gauge system
Harness or connector
Navigation receiver
assembly
WIRING DIAGRAM
INSPECTION PROCEDURE
NAVIGATION: NAVIGATION SYSTEM: B15C2; Speed Signal Malfun...
PROCEDURE
1.
CHECK VEHICLE SENSOR (OPERATION CHECK)
(a) Enter the "System Sensors Check" screen. Refer to Check GPS
& Vehicle Sensors in Operation Check
.
(b) While driving the vehicle, compare the "Speed" indicator to the reading on the speedometer. Check if
these readings are almost equal.
OK:
The readings are equal or almost equal.
Result
RESULT
PROCEED TO
OK (for Column Shift Type)
A
OK (for Floor Shift Type)
B
NG
C
B
REPLACE NAVIGATION RECEIVER ASSEMBLY
C
GO TO STEP 2
A
REPLACE NAVIGATION RECEIVER ASSEMBLY
2.
CHECK COMBINATION METER ASSEMBLY (OUTPUT WAVEFORM)
NAVIGATION: NAVIGATION SYSTEM: B15C2; Speed Signal Malfun...
OK
(a) Check the output waveform.
(1) Remove the combination meter assembly with the
connector(s) still connected
.
(2) Connect an oscilloscope to terminal J28-29 (+S) and body
ground.
(3) Turn the ignition switch to ON.
(4) Turn a wheel slowly.
(5) Check the signal waveform according to the condition(s) in
the table below.
ITEM
CONDITION
Measurement terminal
J28-29 (+S) - Body ground
Tool setting
5 V/DIV., 20 ms./DIV.
Vehicle condition
Wheel being rotated
OK:
The waveform is similar to that shown in the illustration.
HINT:
When the system is functioning normally, one wheel revolution
generates 4 pulses. As the vehicle speed increases, the width
indicated by (A) in the illustration narrows.
Text in Illustration
*a
Component with harness connected
(Combination Meter Assembly)
NG
GO TO METER / GAUGE SYSTEM
3.
CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY -
COMBINATION METER ASSEMBLY)
(a) Disconnect the J135 navigation receiver assembly connector.
(b) Disconnect the J28 combination meter assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
NAVIGATION: NAVIGATION SYSTEM: B15C2; Speed Signal Malfun...
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