Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

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

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

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.

Security telltale ON.

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

Schematic Reference

Theft Deterrent System Schematics

Connector End View Reference

Theft Deterrent System Connector End Views

Electrical Information Reference

1. Ignition OFF, disconnect the theft deterrent module (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

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.