B1424

DTC B1424

DTC DESCRIPTOR

DTC B1424
Device 1 Voltage Low

DIAGNOSTIC FAULT INFORMATION






IMPORTANT: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Testing and Inspection

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.

CONDITIONS FOR CLEARING THE DTC
Module battery voltage is greater than normal voltage low limit 9 volts.

ACTION TAKEN WHEN THE DTC SETS
Security telltale ON.

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


REPAIR INSTRUCTIONS

IMPORTANT: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests