B1424

DTC B1424

DTC Descriptor

DTC B1424
- Device 1 Voltage Low

Diagnostic Fault Information

Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview

Circuit/System Description

Voltage at Pass Key 3 module is lower than the voltage being reported on the serial data line.

Conditions for Running the DTC

The ignition must be in Accessory or Run mode for this code to set.

Conditions for Setting the DTC

Module battery voltage between low voltage limits 6-9 volts for a minimum of 2 seconds and serial data voltage is greater than normal low voltage 9 volts.

Action Taken When the DTC Sets

Security telltale ON.

Conditions for Clearing the DTC

Module battery voltage is greater than normal voltage low limit 9 volts.

Circuit/System Testing

1. Ignition OFF, disconnect the TDM harness connector.
2. Measure and record the voltage at the battery terminals. Ignition in ON position, measure the voltage between the Accessory Voltage circuit and the ground circuit of the TDM. Verify that the voltage readings do not differ more than 1 volt.

• If greater than 1 volt, test the Accessory Voltage circuit and the ground circuit of the TDM for an open/high resistance. If the circuits test normal, replace the TDM.

3. Go to Charging System Test Charging System Test

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests