DTC B112A:16 [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]

id09021c404800

DETECTION CONDITION
Voltage lower than the specification (2.2—6.5 V) is detected in the IG2 monitor input circuit for 1 s with the IG2 relay output circuit operating
POSSIBLE CAUSE
•  WIPER 20 A fuse malfunction
•  Connector or terminal malfunction
•  Short circuit to ground in wiring harness between relay block connector terminal 1C and keyless control module connector terminal 4X
•  Open circuit in wiring harness between relay block connector terminal 1C and keyless control module connector terminal 4X
•  Relay block malfunction
•  Keyless control module malfunction

Diagnostic Procedure

Step

Inspection

Action
1
INSPECT WIPER 20 A FUSE
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  Remove the WIPER 20 A fuse.
•  Inspect the fuse.
•  Is the WIPER 20 A fuse normal?
Yes
Go to the next step.
No
Replace the WIPER 20 A fuse.
After replacement, go to Step 7.
2
INSPECT RELAY BLOCK CONNECTOR CONDITION
•  Disconnect the relay block 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 RELAY BLOCK
•  Inspect the relay block.
•  Is the relay block normal?
Yes
Go to the next step.
No
Replace the relay block.
(See RELAY BLOCK REMOVAL/INSTALLATION [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM].)
After replacement, go to Step 7.
4
INSPECT KEYLESS CONTROL MODULE CONNECTOR CONDITION
•  Disconnect the keyless control module 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.
5
INSPECT IG2 MONITOR INPUT CIRCUIT FOR SHORT CIRCUIT TO GROUND
•  Install the WIPER 20 A fuse.
•  Inspect for continuity between keyless control module connector terminal 4X and body ground.
•  Is there continuity?
Yes
Repair/replace the wiring harness.
After repair procedure, go to Step 7.
No
Go to the next step.
6
INSPECT IG2 MONITOR INPUT CIRCUIT FOR OPEN CIRCUIT
•  Inspect for continuity between relay block connector terminal 1C and keyless control module connector terminal 4X.
•  Is there continuity?
Yes
Go to the next step.
No
Repair/replace the wiring harness.
After repair procedure, go to the next step.
7
VERIFY DTC
•  Install the WIPER 20 A fuse.
•  Reconnect the disconnected connectors and the negative battery cable.
•  Clear DTC using the M-MDS.
•  Verify DTC using the M-MDS.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
If the malfunction recurs, replace the keyless control module.
(See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM].)
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.