DTC B2218 [BCM]

id0902f5839700

Description

Door lock switch (driver-side)/(passenger-side) circuit malfunction
Detection condition
•  Door lock switch (driver-side) or (passenger-side) circuit voltage is less than 3.75 V with the door lock switches off.
Possible cause
•  Door lock switch (driver-side) connector or terminal malfunction
•  Door lock switch (driver-side) malfunction
•  BCM connector or terminal malfunction
•  Short to ground in wiring harness between door lock switch (driver-side) terminal C and BCM terminal 3R
•  Door lock switch (passenger-side) connector or terminal malfunction
•  Door lock switch (passenger-side) malfunction
•  Short to ground in wiring harness between door lock switch (passenger-side) terminal C and BCM terminal 1H
•  BCM malfunction

Diagnostic procedure

Step

Inspection

Action
1
INSPECT DOOR LOCK SWITCH (DRIVER-SIDE) CONNECTOR
•  Turn the ignition switch to the OFF position.
•  Disconnect the negative battery cable.
•  Disconnect the door lock switch (driver-side) connector.
•  Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is there any malfunction?
Yes
Repair or replace the connector, then go to Step 8.
No
Go to the next step.
2
INSPECT DOOR LOCK SWITCH (DRIVER-SIDE)
•  Inspect the door lock switch (driver-side).
•  Is there any malfunction?
Yes
Replace the door lock switch (driver-side), then go to Step 8.
(See DOOR LOCK SWITCH REMOVAL/INSTALLATION.)
No
Go to the next step.
3
INSPECT BCM CONNECTOR
•  Disconnect the BCM connector.
•  Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is there any malfunction?
Yes
Repair or replace the connector, then go to Step 8.
No
Go to the next step.
4
INSPECT FOR SHORT TO GROUND IN DOOR LOCK SWITCH (DRIVER-SIDE) CIRCUIT
•  Verify that the door lock switch (driver-side) and BCM connectors are disconnected.
•  Inspect for continuity between door lock switch (driver-side) terminal C (wiring harness-side) and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness which has a short to ground, then go to Step 8.
No
Go to the next step.
5
INSPECT DOOR LOCK SWITCH (PASSENGER-SIDE) CONNECTOR
•  Disconnect the door lock switch (passenger-side) connector.
•  Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is there any malfunction?
Yes
Repair or replace the connector, then go to Step 8.
No
Go to the next step.
6
INSPECT DOOR LOCK SWITCH (PASSENGER-SIDE)
•  Inspect the door lock switch (passenger-side).
•  Is there any malfunction?
Yes
Replace the door lock switch (passenger-side), then go to Step 8.
(See DOOR LOCK SWITCH REMOVAL/INSTALLATION.)
No
Go to the next step.
7
INSPECT FOR SHORT TO GROUND IN DOOR LOCK SWITCH (PASSENGER-SIDE) CIRCUIT
•  Verify that the door lock switch (driver-side), (passenger-side) and BCM connectors are disconnected.
•  Inspect for continuity between door lock switch (passenger-side) terminal C (wiring harness-side) and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness which has a short to ground, then go to the next step.
No
Go to the next step.
8
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Make sure to reconnect all disconnected connectors.
•  Reconnect the negative battery cable.
•  Clear the DTC for the BCM using the M-MDS.
•  Retrieve the BCM DTCs using the M-MDS.
•  Is the same DTC displayed?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the BCM.
Go to the next step.
No
Go to the next step.
9
VERIFY IF OTHER DTCs DISPLAYED
•  Are any other DTCs displayed?
Yes
Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [BCM].)
No
DTC troubleshooting completed.