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:
Steering Angle Sensor Unusual Bank Angle Detected (C1440)
DESCRIPTION
If the skid control ECU (master cylinder solenoid) determines that the vehicle
is being driven at a steep bank angle, the skid control ECU (master cylinder solenoid)
stores DTC C1440 while VSC operation is temporarily disabled. It is not a malfunction
if the system and sensor circ ...
Clearance Warning ECU Communication Stop Mode
DESCRIPTION
Detection Item
Symptom
Trouble Area
Clearance Warning ECU Communication Stop Mode
Either Condition is met:
Communication stop for "Clearance Warning (Intuitive Parking
Assist1)" is indicated on th ...
VSC Buzzer Circuit
DESCRIPTION
The skid control ECU (brake actuator assembly) is connected to the combination
meter via CAN communication.
The combination meter has a built-in VSC warning buzzer:
Sounds intermittently to inform the driver if the temperature of brake
actuator assembly has increased exce ...
