Toyota Tacoma (2015-2018) Service Manual: Lost Communication with Alternator Missing Message (P161A87)
DESCRIPTION
The ECM communicates with the generator assembly via LIN communication. If a LIN communication error is detected, the ECM stores this DTC.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|---|---|---|
|
P161A87 |
Generator assembly or ECM communication stop for about 17 minutes or more with the ignition switch ON. (1 trip detection logic) |
|
WIRING DIAGRAM
PROCEDURE
|
1. |
CHECK CHARGING SYSTEM |
(a) Check the charging system (See page .gif)
).
| NG | .gif) |
REPAIR OR REPLACE CHARGING SYSTEM |
|
.gif)
|
2. |
CHECK HARNESS AND CONNECTOR (ECM - GENERATOR ASSEMBLY) |
(a) Disconnect the E9 ECM connector.
(b) Disconnect the G2 generator assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
E9-34 (LIN) - G2-2 (LIN) |
Always |
Below 1 Ω |
|
E9-34 (LIN) or G2-2 (LIN) - Body ground |
Always |
10 kΩ or higher |
| OK | |
REPLACE GENERATOR ASSEMBLY |
| NG | |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. CHECK BATTERY CONDITION
NOTICE:
If the battery is weak or if the engine is difficult to start, recharge the battery
and perform inspections again before return ...
Charging Failure
PROCEDURE
1.
CHECK GENERATOR PULLEY WITH CLUTCH (ON-VEHICLE INSPECTION)
(a) Start the engine and visually check if the fan of the generator rotor assembly
located i ...
Other materials:
Front Differential Oil Temperature Sensor Circuit Low (P17C7)
DESCRIPTION
This DTC is output when a short to ground in the oil temperature sensor is detected.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
P17C7
Front Differential Oil Temperature Sensor Circuit Low
...
Installation
INSTALLATION
PROCEDURE
1. INSTALL TRANSMISSION FLOOR SHIFT ASSEMBLY
(a) Install the transmission floor shift assembly to the vehicle body with the
4 bolts.
Torque:
14 N·m {143 kgf·cm, 10 ft·lbf}
(b) Attach the 4 clamps to connect the wire harness to the transmission floor
shift assembl ...
Components
COMPONENTS
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
...
