B2185

B2185 - Ignition Unlock Run/Start Control Circuit High






For a complete wiring diagram, refer to.

• When Monitored: With the ignition OFF.

• Set Condition: The totally integrated power module detects voltage on the ignition switch output circuit with the ignition OFF.






Test Step 1 - Test For Active DTCs

• Turn the ignition ON.

• With the scan tool, read the active DTCs.

• Cycle the ignition switch from OFF to ON, leaving the ignition ON for a minimum of 30 seconds.

• With the scan tool, read the active DTCs.

Does the scan tool display this DTC as active?

Yes

• Go to Test Step 2.

No

• If the DTC is stored, test 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.

Test Step 2 - Test Each Circuit Component for an Internal Short to Voltage

• Using the wiring diagram as a guide disconnect each component on the circuit one at a time while testing for the DTC to become stored. Repeat these steps for each component.

• Turn the ignition OFF.

• Disconnect the component harness connector.

• With the scan tool, read DTCs.

Is the DTC still active with all circuit components disconnected?

Yes

• Go to Test Step 3.

No

• Replace the component, that when disconnected caused the DTC to switch from active to stored.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

Test Step 3 - Ignition Switch Output Circuit Short to Voltage






• Turn the ignition OFF.

• Disconnect the TIPM C6 harness connector.

• Using a 12 volt test lamp connected to ground test the ignition switch output circuit.

Does the test lamp illuminate brightly?

Yes

• Repair the ignition switch output circuit for a short to voltage.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior

No

• Replace the TIPM.

• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior