PNP Switch (A/T)

P1816 PNP SWITCH (A/T)

Description

The transmission range switch transmits the A/T position indicator signal (transmission range switch signal)
via CAN communication to the transfer control unit. DTC P1816 will set when the transmission range switch signal is malfunctioning or there is a communication error.


DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. DTC CONFIRMATION PROCEDURE

1.Turn ignition switch ON.
2.Perform self-diagnosis.
Is DTC P1816 displayed?
YES- Perform diagnosis procedure. .
NO- Inspection End.


Diagnosis Procedure


1. CHECK DTC WITH TCM

Perform self-diagnosis with TCM. Diagnosis System (TCM).
Is any malfunction detected by self-diagnosis?
YES- Check the malfunctioning system.
NO- GO TO 2.

2. CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Pinout Values and Diagnostic Parameters.
Is the inspection result normal?
YES- GO TO 3.
NO- Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.

3. CHECK DTC

Drive the vehicle and then perform self-diagnosis.
Is DTC P1816 displayed?
YES- Perform self-diagnosis with TCM again.
NO- Inspection End.