Diagnostic Test

WARNING: This page is about a different car, the 2007 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

1) CHECK FOR AN ACTIVE DTC
Turn the ignition on.

With the scan tool, record and erase DTCs.

Activate the Panel Illumination.

Wait 30 seconds.

With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes
1. Go to 2).
No
1. The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chaffed, pierced, pinched and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded or contaminated terminals.
2. Perform BODY VERIFICATION TEST - VER 1 .
2) CHECK THE CLOCK MODULE FOR A SHORT TO GROUND

Fig 1: Clock Module Harness Connector
Courtesy of CHRYSLER LLC

Disconnect the Clock Module harness connector.

With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes
1. Go to 3).
No
1. Replace the Clock Module in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 .
3) CHECK THE A/C HEATER CONTROL FOR A SHORT TO GROUND

Fig 2: A/C Heater Control Harness Connector
Courtesy of CHRYSLER LLC

Disconnect the A/C Heater Control harness connector.

With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes
1. Go to 4).
No
1. Replace the A/C Control in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 .
4) CHECK THE PRNDL LAMP FOR A SHORT TO GROUND

Fig 3: PRNDL Lamp Harness Connector
Courtesy of CHRYSLER LLC

Disconnect the PRNDL Lamp harness connector.

With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes
1. Go to 5).
No
1. Replace the PRNDL Lamp in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 .
5) CHECK THE FRONT WINDOW SWITCH FOR A SHORT TO GROUND

Fig 4: Front Window Switch Harness Connector
Courtesy of CHRYSLER LLC

Disconnect the Front Window Switch harness connector.

With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes
1. Go to 6).
No
1. Replace the Front Window Switch in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 .
6) CHECK THE (E12) PANEL LAMPS DRIVER CIRCUIT FOR A SHORT TO GROUND

Fig 5: Measuring Resistance To Ground Of Panel Lamps Driver Circuit
Courtesy of CHRYSLER LLC

Turn the ignition off.

Disconnect the Instrument Cluster C1 harness connector.

With all the above components disconnected, measure the resistance to ground of the (E12) Panel Lamps Driver Circuit from the Instrument Cluster C1 harness connector.

Is the resistance less than 10K ohms?

Yes
1. Repair the (E12) Panel Lamps Driver circuit for a short to ground.
2. Perform BODY VERIFICATION TEST - VER 1 .
No
1. Go to 7).
7) CHECK THE (E12) PANEL LAMPS DRIVER CIRCUIT FOR AN OPEN

Fig 6: Measuring Resistance Of Panel Lamps Driver Circuit
Courtesy of CHRYSLER LLC

With all the above components disconnected, measure the resistance of the (E12) Panel Lamps Driver Circuit between the Instrument Cluster C1 harness connector and the Window Switch harness connector.

Is the resistance greater than 10K ohms?

Yes
1. Repair the (E12) Panel Lamps Driver circuit for an open.
2. Perform BODY VERIFICATION TEST - VER 1 .
No
1. Go to 8).
8) CHECK THE (E12) PANEL LAMPS DRIVER CIRCUIT FOR A SHORT TO VOLTAGE

Fig 7: Measuring Voltage Of Panel Lamps Driver Circuit
Courtesy of CHRYSLER LLC

Turn the ignition on.

With all the above components disconnected, measure the voltage of the (E12) Panel Lamps Driver Circuit from the Instrument Cluster C1 harness connector.

Is the voltage above 5.0 volts?

Yes
1. Repair the (E12) Panel Lamps Driver circuit for a short to voltage.
2. Perform BODY VERIFICATION TEST - VER 1 .
No
1. Replace the Instrument Cluster in accordance with the service information.
2. Perform BODY VERIFICATION TEST - VER 1 .