Computer/Integrating System Diagnosis

DTC B1370

CIRCUIT DESCRIPTION
The remote control door lock receiver (RCDLR) provides a high side drive output for the ignition 1 voltage circuit. The RCDLR controls the Run/Crank relay when the backup power mode is enabled.

DTC DESCRIPTOR




This diagnostic procedure supports the following DTC:
DTC B1370 Device Ignition 1 (ON and START) Circuit

CONDITIONS FOR RUNNING THE DTC
- Voltage supplied to the module is in the normal operating voltage range of 9-16 volts.
- Backup power mode is enabled.

CONDITIONS FOR SETTING THE DTC
- The RCDLR detects a short to ground in the ignition 1 voltage circuit when the output is active.
- The RCDLR detects a short to battery or an open in the ignition 1 voltage circuit when the output is inactive.
- Any of the condition above must be present for more than 0.375 seconds.

ACTION TAKEN WHEN THE DTC SETS
The RCDLR disables the output for the current ignition cycle when a short to ground 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 12:

Step 13 - Step 15: