WARNING: This page is about a different car, the 2002 Dodge Intrepid, 2002 Chrysler Intrepid, 2002 Chrysler Concorde, and 2002 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: After making any repairs, perform MEMORY HEATED SYSTEM VERIFICATION TEST under VERIFICATION TESTS.

Monitored & Set Condition

When Monitored: With the engine running.
Set Condition: When the Memory Heated Seat Mirror Module does not receive the engine RPM Bus message.

Possible Causes:

Stored Code/Communication Problems
Memory Heated Seat Mirror Module
Intermittent Problem

Testing

Turn ignition off. Connect scan tool to Data Link Connector (DLC). Turn ignition on. Using scan tool, clear LOSS OF ENGINE RPM DTC from memory heated seat/mirror module. Turn ignition off, then start engine. Wait one minute. Using scan tool, retrieve DTCs. If LOSS OF ENGINE RPM DTC resets, go to next step. If LOSS OF ENGINE RPM DTC does not reset, test is complete. Perform MEMORY HEATED SYSTEMS VERIFICATION TEST under VERIFICATION TESTS.
Check related wiring and connectors for poor connections or damage to wiring harness. See WIRING DIAGRAMS . Repair any problems found as necessary. If no problems are found, replace MHSMM. See MEMORY HEATED SEAT/MIRROR MODULE under REMOVAL & INSTALLATION.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Loss Of Engine RPM Message

Use the Manual With the Right Hardware

When to See a Mechanic