Toyota CH-R Service Manual: Lost Communication with Alternator (P161A)
DESCRIPTION
The ECM and generator assembly detect reception errors respectively.
The generator assembly reception error detected by the generator assembly is sent to the ECM via LIN communication. If an error occurs in the ECM or generator assembly, the ECM determines there is a LIN communication error and stores this DTC.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
|---|---|---|---|
|
P161A |
Lost Communication with Alternator |
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.
Click here
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| NG | .gif) |
REPAIR OR REPLACE CHARGING SYSTEM |
|
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|
2. |
CHECK HARNESS AND CONNECTOR (ECM - GENERATOR WITH REGULATOR ASSEMBLY) |
(a) Disconnect the C63 ECM connector.
(b) Disconnect the C37 generator assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
C63-61 (LIN) - C37-2 (LIN) |
Always |
Below 1 Ω |
|
C63-61 (LIN), C37-2 (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
CAUTION / NOTICE / HINT
NOTICE:
If the battery is weak or if the engine is difficult to start, recharge the battery
and perform inspections again before returning the vehicl ...
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 gener ...
Other materials:
Toyota CH-R Service Manual > Black Out Tape(for Rear Door): Installation
INSTALLATION
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH side and LH side.
The following procedure is for the LH side.
PROCEDURE
1. REPAIR INSTRUCTION
Click here
2. INSTALL REAR DOOR OUTSIDE STRIPE
(a) Refer to the illustration to position a new rear ...
Toyota CH-R Service Manual > Air Conditioning System(for Automatic Air Conditioning System With Top-mounted
Air Conditioner Pressure Sensor): Compressor Solenoid Circuit (B1451)
DESCRIPTION
In this circuit, the compressor with pulley assembly (compressor solenoid) receives
a refrigerant compression demand signal from the air conditioning amplifier assembly.
Based on this signal, the compressor with pulley assembly (compressor solenoid)
changes the amount of compressor ...
Toyota C-HR (AX20) 2023-2026 Owner's Manual
Toyota CH-R Owners Manual
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Toyota CH-R Service Manual
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