Diagnostic Test

WARNING: This page is about a different car, the 2006 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

1) CHECK FOR ACTIVE DTC
With the scan tool, read the active DTC's.

Cycle the ignition switch from off to on, leaving the ignition on for a minimum of 10 seconds.

With the scan tool, read the active DTC's.

Does the scan tool display this DTC as active?

Yes
1. Go To 2).
No
1. If the DTC is stored, check for an intermittent condition. Using the wiring diagram/schematic as a guide, visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
2) HEATED SEAT MODULE INTERNAL SHORT TO VOLTAGE

Fig 1: Heated Seat Module Harness Connector
Courtesy of DAIMLERCHRYSLER CORP.

Turn the ignition off.

Disconnect the Heated Seat Module harness connector.

Turn the ignition on.

With the scan tool, read DTCs.

Does the scan tool display B2185-IGNITION UNLOCK RUN/START CONTROL CIRCUIT HIGH?

Yes
1. Go To 3).
No
1. Replace the Heated Seat Module in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .
3) (F937) FUSED IGNITION SWITCH OUTPUT (RUN) CIRCUIT SHORT TO VOLTAGE

Fig 2: Measuring Voltage Of Fused Ignition Switch Output (Run) Circuit
Courtesy of DAIMLERCHRYSLER CORP.

Disconnect the TIPM C8 harness connector.

Measure the voltage of the (F937) Fused Ignition Switch Output (Run) circuit.

Is the voltage above 10 volts?

Yes
1. Repair the (F937) Fused Ignition Switch Output (Run) circuit for a short to voltage.
2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .
No
1. Replace the TIPM in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .