Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Lost Communication with Alternator Missing Message (P161A87)

Toyota Tacoma 2015-2018 Service Manual / 2gr-fks Charging / Charging System / 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)

  • Wire harness and connector
  • Generator assembly
  • ECM

WIRING DIAGRAM

PROCEDURE

PROCEDURE

1.

CHECK CHARGING SYSTEM

(a) Check the charging system (See page ).

NG

REPAIR OR REPLACE CHARGING SYSTEM

OK

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:

Installation
INSTALLATION PROCEDURE 1. INSTALL SPIRAL CABLE SUB-ASSEMBLY WITH SENSOR (a) Check that the ignition switch is OFF. (b) Check that the battery negative (-) terminal is disconnected. CAUTION: Wait at least 90 seconds after disconnecting t ...

Components
COMPONENTS ILLUSTRATION ILLUSTRATION ILLUSTRATION *1 COMPRESSOR PICK UP SENSOR *2 MAGNET CLUTCH ASSEMBLY *3 PRESSURE RELIEF VALVE *4 COMPRESSOR SPACER *5 O-RING ...

Removal
REMOVAL PROCEDURE 1. REMOVE FRONT CONSOLE BOX (See page ) 2. DISCONNECT TRANSMISSION CONTROL CABLE ASSEMBLY 3. REMOVE TRANSMISSION CONTROL CABLE ASSEMBLY (a) Remove the nut and clip and disconnect the transmission control cable assembly from the automatic transmission assem ...

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