DTC B11DA:11 [BCM]

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Malfunction Location

• Front door key cylinder switch (driver’s side) circuit malfunction

Detection Condition

• Short to ground detected in front door key cylinder switch (driver’s side) circuit with the front door key cylinder switch (driver’s side) off

Possible Causes

L.H.D.

• Short circuit to ground in wiring harness between front door key cylinder switch (driver’s side) connector terminal H and BCM connector terminal 6L

• Front door key cylinder switch (driver’s side) malfunction

• BCM malfunction

R.H.D.

• Short circuit to ground in wiring harness between front door key cylinder switch (driver’s side) connector terminal F and BCM connector terminal 6L

• Front door key cylinder switch (driver’s side) malfunction

• BCM malfunction

System Wiring Diagram

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Diagnostic Procedure

Step

Inspection

Action

1

PERFORM DTC INSPECTION

•  Clear DTCs using the M-MDS.
(See CLEARING DTC [BCM].)

•  Perform the BCM DTC inspection using the M-MDS with the front door key cylinder switch (driver's side) off.
(See DTC INSPECTION [BCM].)

•  Is DTC B11DA:11 displayed?

Yes

Go to the next step.

No

DTC troubleshooting completed.

2

INSPECT FRONT DOOR KEY CYLINDER SWITCH (DRIVER’S SIDE) CONNECTOR CONDITION

•  Switch the ignition to off.

•  Disconnect the negative battery cable.

•  Disconnect the front door key cylinder switch (driver’s side) connector.

•  Inspect the connector and terminals (corrosion, damage, pin disconnection).

•  Is the connector normal?

Yes

Go to the next step.

No

Repair/replace the connector or terminal.

After repair procedure, go to Step 6.

3

INSPECT FRONT DOOR KEY CYLINDER SWITCH (DRIVER’S SIDE)

•  Inspect the front door key cylinder switch (driver’s side).
(See FRONT DOOR KEY CYLINDER SWITCH INSPECTION.)

•  Is the front door key cylinder switch (driver’s side) normal?

Yes

Go to the next step.

No

Replace the front door key cylinder switch (driver’s side).

(See FRONT DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.)

After replacement, go to Step 6.

4

INSPECT BCM CONNECTOR CONDITION

•  Disconnect the BCM connector.

•  Inspect the connector and terminals (corrosion, damage, pin disconnection).

•  Is the connector normal?

Yes

Go to the next step.

No

Repair/replace the connector or terminal.

After repair procedure, go to Step 6.

5

INSPECT FRONT DOOR KEY CYLINDER SWITCH (DRIVER’S SIDE) CIRCUIT FOR SHORT CIRCUIT TO GROUND

L.H.D.

•  Inspect for continuity between front door key cylinder switch (driver’s side) connector terminal H and body ground.

•  Is there continuity?

R.H.D.

•  Inspect for continuity between front door key cylinder switch (driver’s side) connector terminal F and body ground.

•  Is there continuity?

Yes

Repair/replace the wiring harness.

After repair procedure, go to the next step.

No

Go to the next step.

6

VERIFY DTC

•  Reconnect the disconnected connectors and the negative battery cable.

•  Clear DTCs using the M-MDS.
(See CLEARING DTC [BCM].)

•  Perform the BCM DTC inspection using the M-MDS with the front door key cylinder switch (driver's side) off.
(See DTC INSPECTION [BCM].)

•  Is the same DTC present?

Yes

Repeat the inspection from Step 1.

If the malfunction recurs, replace the BCM.

(See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)

Go to the next step.

No

Go to the next step.

7

VERIFY THAT NO OTHER DTCs ARE PRESENT

•  Are there other DTCs output?

Yes

Perform the corresponding DTC inspection.

No

DTC troubleshooting completed.

Step	Inspection		Action
1	PERFORM DTC INSPECTION • Clear DTCs using the M-MDS. (See CLEARING DTC [BCM].) • Perform the BCM DTC inspection using the M-MDS with the front door key cylinder switch (driver's side) off. (See DTC INSPECTION [BCM].) • Is DTC B11DA:11 displayed?	Yes	Go to the next step.
1		No	DTC troubleshooting completed.
2	INSPECT FRONT DOOR KEY CYLINDER SWITCH (DRIVER’S SIDE) CONNECTOR CONDITION • Switch the ignition to off. • Disconnect the negative battery cable. • Disconnect the front door key cylinder switch (driver’s side) connector. • Inspect the connector and terminals (corrosion, damage, pin disconnection). • Is the connector normal?	Yes	Go to the next step.
2		No	Repair/replace the connector or terminal. After repair procedure, go to Step 6.
3	INSPECT FRONT DOOR KEY CYLINDER SWITCH (DRIVER’S SIDE) • Inspect the front door key cylinder switch (driver’s side). (See FRONT DOOR KEY CYLINDER SWITCH INSPECTION.) • Is the front door key cylinder switch (driver’s side) normal?	Yes	Go to the next step.
3		No	Replace the front door key cylinder switch (driver’s side). (See FRONT DOOR LATCH AND LOCK ACTUATOR REMOVAL/INSTALLATION.) After replacement, go to Step 6.
4	INSPECT BCM CONNECTOR CONDITION • Disconnect the BCM connector. • Inspect the connector and terminals (corrosion, damage, pin disconnection). • Is the connector normal?	Yes	Go to the next step.
4		No	Repair/replace the connector or terminal. After repair procedure, go to Step 6.
5	INSPECT FRONT DOOR KEY CYLINDER SWITCH (DRIVER’S SIDE) CIRCUIT FOR SHORT CIRCUIT TO GROUND L.H.D. • Inspect for continuity between front door key cylinder switch (driver’s side) connector terminal H and body ground. • Is there continuity? R.H.D. • Inspect for continuity between front door key cylinder switch (driver’s side) connector terminal F and body ground. • Is there continuity?	Yes	Repair/replace the wiring harness. After repair procedure, go to the next step.
5		No	Go to the next step.
6	VERIFY DTC • Reconnect the disconnected connectors and the negative battery cable. • Clear DTCs using the M-MDS. (See CLEARING DTC [BCM].) • Perform the BCM DTC inspection using the M-MDS with the front door key cylinder switch (driver's side) off. (See DTC INSPECTION [BCM].) • Is the same DTC present?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the BCM. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.) Go to the next step.
6		No	Go to the next step.
7	VERIFY THAT NO OTHER DTCs ARE PRESENT • Are there other DTCs output?	Yes	Perform the corresponding DTC inspection.
7		No	DTC troubleshooting completed.