DTC U3004:17 [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]

id09021c406900

DESCRIPTION

ACC relay circuit malfunction
DETECTION CONDITION
•  ACC monitor input circuit voltage higher than threshold (2.2—6.5 V) is detected for 1 s, while ACC relay output circuit is not active.
POSSIBLE CAUSE
•  Relay block connector or terminals malfunction
•  Open circuit in wiring harness between relay block terminal 2C and body ground
•  Keyless control module connector or terminals malfunction
•  Short to power supply 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 2E and keyless control module terminal 4F
•  Keyless control module malfunction

Diagnostic Procedure

Step

Inspection

Action
1
INSPECT RELAY BLOCK CONNECTOR CONDITION
•  Switch the ignition to off.
•  Disconnect the negative battery cable.
•  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 7.
No
Go to the next step.
2
INSPECT ACC RELAY GROUND CIRCUIT FOR OPEN CIRCUIT
•  Relay block connector is disconnected.
•  Inspect for continuity between relay block terminal 2C (wiring harness-side) and body ground.
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness for a possible open circuit, then go to Step 7.
3
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 7.
No
Go to the next step.
4
INSPECT ACC MONITOR INPUT CIRCUIT FOR SHORT TO POWER SUPPLY
•  Relay block and keyless control module connectors are disconnected.
•  Reconnect the negative battery cable.
•  Measure the voltage at the relay block terminal 2B (wiring harness-side).
•  Is there any voltage?
Yes
Repair or replace the wiring harness for a possible short to power supply, then go to Step 7.
No
Go to the next step.
5
INSPECT RELAY BLOCK
•  Inspect the relay block.
•  Is there any malfunction?
Yes
Replace the relay block, then go to Step 7.
(See RELAY BLOCK REMOVAL/INSTALLATION [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM].)
No
Go to the next step.
6
INSPECT ACC RELAY OUTPUT CIRCUIT FOR OPEN CIRCUIT
•  Relay block and keyless control module connectors are disconnected.
•  Disconnect the negative battery cable.
•  Inspect for continuity between relay block terminal 2E (wiring harness-side) and keyless control module terminal 4F (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.
7
VERIFY TROUBLESHOOTING COMPLETED
•  Make sure to reconnect the disconnected connectors.
•  Reconnect the negative battery cable.
•  Clear the DTC from the keyless control module using the M-MDS.
•  Switch the ignition to off.
•  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.
8
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.