DTC P1536:13 [BCM]


id0902f5415500


Malfunction Location

•  Parking brake switch circuit malfunction

Detection Condition

•  Open circuit detected in parking brake switch circuit with the parking brake lever applied (parking brake switch on)

Possible Causes

•  Open circuit in wiring harness between parking brake switch connector terminal A and BCM connector terminal 8A
•  Parking brake switch 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.
•  Perform the BCM DTC inspection using the M-MDS with the parking brake lever applied (parking brake switch on).
•  Is DTC P1536:13 displayed?
Yes
Go to the next step.
No
DTC troubleshooting completed.
2
INSPECT PARKING BRAKE SWITCH CONNECTOR CONDITION
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  Disconnect the parking brake switch 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 7.
3
INSPECT PARKING BRAKE SWITCH CIRCUIT FOR OPEN CIRCUIT
•  Reconnect the negative battery cable.
•  Measure the voltage at parking brake switch connector terminal A.
•  Can the voltage be measured?
Yes
Go to the next step.
No
Go to Step 5.
4
INSPECT PARKING BRAKE SWITCH
•  Inspect the parking brake switch.
•  Is the parking brake switch normal?
Yes
Go to Step 7.
No
Replace the parking brake switch.
After replacement, go to Step 7.
5
INSPECT BCM CONNECTOR CONDITION
•  Disconnect the negative battery cable.
•  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 7.
6
INSPECT BCM
•  Reconnect the BCM connector.
•  Reconnect the negative battery cable.
•  Measure the voltage at BCM connector terminal 8A.
•  Is the voltage normal?
Yes
Go to the next step.
No
Repair/replace the wiring harness.
After repair procedure, go to the next step.
7
VERIFY DTC
•  Reconnect the disconnected connectors and the negative battery cable.
•  Clear DTCs using the M-MDS.
•  Perform the BCM DTC inspection using the M-MDS with the parking brake lever applied (parking brake switch on).
•  Is the same DTC present?
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.
8
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Are there other DTCs output?
Yes
Perform the corresponding DTC inspection.
No
DTC troubleshooting completed.