Toyota Tundra (2015 year). Manual — part 254
A
REPLACE VSC ACTUATOR ASSEMBLY
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM00000252G01MX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1340/47; Center Differential Lock Circuit;
2015 MY Tundra [08/2014 - ]
DTC
C1340/47 Center Differential Lock Circuit
DESCRIPTION
The skid control ECU monitors the 2WD/4WD state from both the 4 wheel drive control ECU and the A.D.D.
detection switch.
DTC
CODE
DTC DETECTION CONDITION
TROUBLE AREA
C1340/47
When the terminal IG1 voltage is between 10 and 14 V, there is an
open in the A.D.D. detection switch circuit or there is a transfer
mechanical malfunction for 2 seconds or more.
A.D.D. detection
switch
A.D.D. detection
switch circuit
4 wheel drive
control ECU
Transfer
Skid control ECU
WIRING DIAGRAM
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...
INSPECTION PROCEDURE
NOTICE:
When replacing the VSC actuator assembly, perform zero point calibration
.
HINT:
If the transfer shift actuator cannot change from 2WD to 4WD or 4WD to 2WD, inspect and repair the
touch select 2-4 and high-low system first.
PROCEDURE
1.
INSPECT SKID CONTROL ECU (EXI2 TERMINAL)
(a) Set the vehicle in 4WD state using the A.D.D. detection switch.
(b) Disconnect the A17 ECU connector.
(c) Turn the ignition switch to ON.
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
A17-11 (EXI2) - Body ground
Ignition switch ON
4WD (A.D.D. detection switch ON)
Below 1.5 V
(e) Connect the A17 ECU connector.
(f) Set the vehicle in 2WD state using the A.D.D. detection switch.
(g) Disconnect the A17 ECU connector.
(h) Turn the ignition switch to ON.
(i) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...
TESTER CONNECTION
SWITCH CONDITION
SPECIFIED CONDITION
A17-11 (EXI2) - Body ground
Ignition switch ON
2WD (A.D.D. detection switch OFF)
10 to 14 V
NG
GO TO STEP 2
OK
REPLACE VSC ACTUATOR ASSEMBLY
2.
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - 4 WHEEL DRIVE CONTROL
ECU)
(a) Confirm that the skid control ECU connector and 4 wheel drive
control ECU connector are properly connected.
(b) Disconnect the A17 and A25 ECU connectors.
(c) Disconnect the G1 A.D.D. actuator connector.
(d) Inspect both the connector case and the terminal for deformation and corrosion.
OK:
No deformation or corrosion.
(e) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
TESTER CONNECTION
CONDITION
SPECIFIED CONDITION
A17-11 (EXI2) - A25-18 (ADD)
Always
Below 1 Ω
A17-11 (EXI2) - Body ground
Always
10 kΩ or higher
BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C...
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