B1422

DTC B1422

CIRCUIT DESCRIPTION

Valid States:

The hybrid control module (HCM) monitors Ignition 1, Ignition 0 discrete wires from the ignition switch contacts, and the Crank state message from the powertrain control module (PCM). If HCM detects a mismatch between the ignition switch signals and the Crank state message, it will set the DTC. The following table represents correct HCM power mode data:

CONDITIONS FOR RUNNING THE DTC
Either one of the below conditions has to satisfied:
- Ignition 0 voltage is between 8-16 volts.
- Power maintain is true and DC/DC direction is 42-14 volts.

CONDITIONS FOR SETTING THE DTC

Invalid States:

The DTC will set if any of the following cases is detected for about 2.5 milliseconds:

ACTION TAKEN WHEN THE DTC SETS
The HCM implements default actions when a fault is detected.

CONDITIONS FOR CLEARING THE DTC
- A current DTC clears when the malfunction is no longer present.
- A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the malfunction.

TEST

Step 1 - Step 9:

Step 10 - Step 14: