DTC U3004:16 [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]

id09021c399200

DETECTION CONDITION
ACC monitor input circuit voltage less than threshold (2.2—6.5 V) is detected for 1 s, while ACC relay output circuit is active
POSSIBLE CAUSE
•  MIRROR 5 A fuse malfunction
•  Connector or terminal malfunction
•  Short to ground in wiring harness between relay block terminal 2B and keyless control module terminal 2A
•  Relay block malfunction
•  Open circuit in wiring harness between relay block terminal 2B and keyless control module terminal 2A
•  Keyless control module malfunction

Diagnostic Procedure

Step

Inspection

Action
1
PERFORM DTC INSPECTION
•  Clear the DTC from keyless control module memory using the M-MDS.
•  Perform the advanced keyless entry and push button start system DTC inspection using the M-MDS.
•  Is the DTC U3004:11 present?
Yes
Perform the DTC U3004:11 inspection.
(See DTC U3004:11 [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM].)
No
Go to the next step.
2
INSPECT FUSE
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  Remove the MIRROR 5 A fuse.
•  Inspect the MIRROR 5 A fuse.
•  Is there any malfunction?
Yes
Replace the MIRROR 5 A fuse, then go to Step 8.
No
Go to the next step.
3
INSPECT RELAY BLOCK CONNECTOR CONDITION
•  Disconnect the relay block connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 8.
No
Go to the next step.
4
INSPECT KEYLESS CONTROL MODULE CONNECTOR CONDITION
•  Disconnect the keyless control module connector.
•  Inspect the connector and terminals (corrosion, damage, pin disconnection).
•  Is there any malfunction?
Yes
Repair or replace the connector or terminals, then go to Step 8.
No
Go to the next step.
5
INSPECT ACC MONITOR INPUT CIRCUIT FOR SHORT TO GROUND
•  Install the MIRROR 5 A fuse.
•  Inspect for continuity between relay block terminal 2B (wiring harness-side) and body ground.
•  Is there continuity?
Yes
Repair or replace the wiring harness for a possible short to ground, then go to Step 8.
No
Go to the next step.
6
INSPECT RELAY BLOCK
•  Inspect the relay block.
•  Is there any malfunction?
Yes
Replace the relay block, then go to Step 8.
(See RELAY BLOCK REMOVAL/INSTALLATION [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM].)
No
Go to the next step.
7
INSPECT ACC MONITOR INPUT CIRCUIT FOR OPEN CIRCUIT
•  Inspect for continuity between relay block terminal 2B (wiring harness-side) and keyless control module terminal 2A (wiring harness-side).
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to the next step.
8
VERIFY TROUBLESHOOTING COMPLETED
•  Make sure to reconnect the disconnected connectors.
•  Reconnect the negative battery cable.
•  Clear the DTC from keyless control module memory using the M-MDS.
•  Perform the advanced keyless entry and push button start system DTC inspection 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, then go to the next step.
(See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM].)
No
Go to the next step.
9
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM].)
No
DTC troubleshooting completed.