Accessory Power Module (APM) Reprogramming

When APM reprogramming must be performed, refer to Service Programming System (SPS) .

Ensure the following conditions exist in order to prepare for APM programming or reprogramming:

• The battery is fully charged.
• The ignition switch is in the RUN position.
• The Techline equipment cable connection at the data link connector (DLC) is secure.

Program the APM using the latest software matching the vehicle. Refer to up-to-date Techline equipment user instructions.

If the APM fails to program, proceed as follows:

• Ensure the DLC and APM connections are good.
• Inspect the Techline equipment for the latest software version.
• Attempt to program the APM. If the APM still cannot be programmed properly, replace the APM.