CHARGING SYSTEM, Diagnostic DTC:P161A
| DTC Code | DTC Name |
|---|---|
| P161A | Lost Communication with Alternator |
DESCRIPTION
The ECM and generator assembly each detect reception malfunctions. A generator assembly reception malfunction detected by the generator assembly is sent to the ECM via LIN communication. If there is a malfunction in either the ECM or generator assembly, the ECM determines that there is a LIN communication malfunction and outputs a DTC.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Warning Indicate |
Memory |
|---|---|---|---|---|---|
P161A |
Lost Communication with Alternator |
Diagnosis condition: Ignition switch to ON When the ECM cannot receive LIN communication, the generator assembly cannot receive LIN communication for approximately 17 minutes or more. Other: 1 trip |
|
Displayed |
DTC stored |
WIRING DIAGRAM
PROCEDURE
CHECK CHARGING SYSTEM
Check the charging system.
Result
Result
OK
NG
NG REPAIR OR REPLACE CHARGING SYSTEM
CHECK HARNESS AND CONNECTOR (ECM - GENERATOR ASSEMBLY)
Disconnect the B93 ECM connector.
Disconnect the B90 generator assembly connector.
Disconnect the A75 battery state sensor assembly connector.
Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection
Condition
Specified Condition
B93-61 (LIN) - B90-2 (LIN)
Always
Below 1 Ω
B93-61 (LIN) or B90-2 (LIN) - Body ground
Ignition switch off
(while LIN communication is stopped)
10 kΩ or higher
Result
Proceed to
OK
NG
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
READ OUTPUT DTC
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs.
Powertrain > Engine and ECT > Clear DTCs
Turn the ignition switch off and wait at least 30 seconds.
Start the engine and wait 17 minutes or more.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read the DTCs.
Powertrain > Engine and ECT > Trouble Codes
Result
Result
Proceed to
Only P161A is output
A
P161A and P162B are output
B
No DTC is output
C