Toyota Camry (XV70): 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. | Detection Item |
DTC Detection Condition | Trouble Area |
Warning Indicate | Memory |
Note |
|---|---|---|---|---|---|---|
| P161A87 |
Lost Communication with Alternator Missing Message |
Generator assembly or ECM communication stops for approximately 17 minutes or more with the engine switch on (IG). (1 trip detection logic) |
| Charge warning is not displayed |
DTC stored | SAE Code: P161A |
WIRING DIAGRAM
PROCEDURE
| 1. |
CHECK CHARGING SYSTEM |
(a) Check the charging system.
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| NG | .gif) | REPAIR OR REPLACE CHARGING SYSTEM |
|
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| 2. |
CHECK HARNESS AND CONNECTOR (ECM - GENERATOR ASSEMBLY) |
(a) Disconnect the C96 ECM connector.
(b) Disconnect the C60 generator assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
C96-135 (LIN) - C60-2 (LIN) |
Always | Below 1 Ω |
|
C96-135 (LIN) or C60-2 (LIN) - body ground |
Always | 10 kΩ or higher |
| OK | | REPLACE GENERATOR ASSEMBLY
|
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
READ NEXT:
Charging Failure
PROCEDURE
1. CHECK GENERATOR PULLEY WITH CLUTCH (ON-VEHICLE INSPECTION)
(a) Start the engine and visually check that the generator rotor assembly (fan) in the generator assembly is opera
Noise Occurs from V-ribbed Belt or Generator Assembly
PROCEDURE
1. CONFIRM PROBLEM SYMPTOM
(a) Confirm the problem symptom.
Symptom Proceed to
Noise occurs from V-ribbed belt.
A Noise occurs from generator assembly
SEE MORE:
Ultrasonic Sensor (Front Left Center) Missing Message (C1AE287)
DESCRIPTION This DTC is stored when an open circuit or short occurs in the communication line between the front center ultrasonic sensor LH and the front center ultrasonic sensor RH, or when a malfunction occurs in the front center ultrasonic sensor LH.
DTC No. Detection Item
DTC Detect
Installation
INSTALLATION PROCEDURE 1. INSTALL FUEL SENDER GAUGE ASSEMBLY
(a) Engage the claw to install the fuel sender gauge assembly to the fuel suction tube with pump and gauge assembly.
NOTICE: Be careful not to bend the arm of the fuel sender gauge assembly.
(b) Engage the 2 clamps to connect the wir
