B1801
B1801 - Driver Left Door Lock/Unlock Switch Circuit Low
For a complete wiring diagram, refer to.
• When Monitored: Continuously
• Set Condition: When the driver door lock switch MUX circuit does not switch from low to high for over 30 seconds, this code will set.
Test Step 1 - Test For Intermittent Condition
• Turn the ignition ON.
• With the scan tool, erase all DTCs.
• Operate the driver door lock switch in the lock and unlock position several times.
• Cycle the ignition from ON to OFF 3 times.
• Turn the ignition ON.
• With the scan tool, read DTCs.
Does the scan tool display this DTC?
Yes
• Go to Test Step 2.
No
• The condition that caused this symptom is currently not present. Test for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior
Test Step 2 - Driver Door Lock Switch Short to Ground
• With the scan tool, erase all DTCs.
• Disconnect the driver door lock switch harness connector.
• Turn the ignition ON.
• With the scan tool, read DTCs.
Does the scan tool display this DTC?
Yes
• Go to Test Step 3.
No
• Replace the left front door lock switch..
• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior
Test Step 3 - Driver Door Lock Switch MUX Circuit Short to Ground
• Turn the ignition OFF.
• Disconnect the TIPM C7 harness connector
• Measure the resistance between ground and the driver door lock switch MUX circuit.
Is the resistance more than 10k ohms?
Yes
• Replace the totally integrated power module.
• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior
No
• Repair the circuit for a short to ground.
• Perform the Body Verification Test. Refer to => Non-DTC Based Diagnostics. Body Interior