Toyota Tacoma (2015-2018) Service Manual: Automatic Disconnecting Differential Motor Control Circuit Open (P17A0)
DESCRIPTION
This DTC is output when an open circuit in the A.D.D. shift motor drive circuit is detected.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
P17A0 |
Automatic Disconnecting Differential Motor Control Circuit Open |
|
|
WIRING DIAGRAM
Refer to DTC P17A9 (See page .gif)
).
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (4 WHEEL DRIVE CONTROL ECU - DIFFERENTIAL VACUUM ACTUATOR ASSEMBLY) |
(a) Disconnect the F12 4 wheel drive control ECU connector.
(b) Disconnect the A3 A.D.D. actuator (differential vacuum actuator assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
F12-2 (DM1) - A3-1 (DM1) |
Always |
Below 1 Ω |
|
F12-6 (DM2) - A3-2 (DM2) |
Always |
Below 1 Ω |
| NG | .gif) |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
.gif)
|
2. |
INSPECT DIFFERENTIAL VACUUM ACTUATOR ASSEMBLY (A.D.D. SHIFT MOTOR) |
|
(a) Disconnect the A3 A.D.D. actuator (differential vacuum actuator assembly) connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 (DM1) - 2 (DM2) |
Always |
1.5 to 10 Ω |
|
*a |
Component without harness connected (A.D.D. Actuator (Differential Vacuum Actuator Assembly)) |
| OK | |
REPLACE 4 WHEEL DRIVE CONTROL ECU |
| NG | |
REPLACE DIFFERENTIAL VACUUM ACTUATOR ASSEMBLY |
Invalid Data Received From Vehicle Dynamics Control Module (U0416)
DESCRIPTION
This DTC is detected if a wheel speed malfunction signal is sent from the skid
control ECU (brake actuator assembly).
DTC No.
Detection Item
DTC Detect ...
Automatic Disconnecting Differential Motor Limit Switch Circuit (P17A4)
DESCRIPTION
When the A.D.D. actuator switches between 2WD and 4WD, the DL1 and DL2 terminals
of the limit switch and ADD terminal of the A.D.D. position switch change to one
of the following ON/O ...
Other materials:
Clearance Warning Ecu
Components
COMPONENTS
ILLUSTRATION
Installation
INSTALLATION
PROCEDURE
1. INSTALL CLEARANCE WARNING ECU ASSEMBLY
(a) Connect the connector.
(b) Engage the 2 guides to install the clearance warning ECU assembly.
(c) Install the 2 screws.
2. INSTALL AIR CONDITIONING CONTROL ASSEMBLY (f ...
Reassembly
REASSEMBLY
PROCEDURE
1. INSTALL REAR BUMPER SIDE STAY LH
(a) Install the rear bumper side stay LH with the 2 bolts.
Torque:
30 N·m {306 kgf·cm, 22 ft·lbf}
2. INSTALL REAR BUMPER SIDE STAY RH
HINT:
Use the same procedure as for ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY
(a) Check the operation.
(1) Apply battery voltage between the terminals and check that the plunger
operates.
Text in Illustration
*a
Component without harness con ...
