DTC U3003:16/U3003:17 [ACTIVE BONNET]

id0802f1823200

DESCRIPTION | • DTC U3003:16: Active bonnet control module power supply voltage decrease (less than 8 V) • DTC U3003:17: Active bonnet control module power supply voltage increase (18 V or more)
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DETECTION CONDITION | Warning • Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection according to only the detection conditions may cause injury due to an operating error, or damage the system. When performing an inspection, always follow the diagnostic procedure. • Active bonnet control module power supply voltage is other than 8―17.9 V
POSSIBLE CAUSE | • Battery malfunction • ENGINE 15 A fuse malfunction • Open circuit or short to ground in wiring harness between active bonnet control module and battery (+) • Open circuit in wiring harness between active bonnet control module and body ground • Active bonnet control module malfunction
SYSTEM WIRING DIAGRAM |

Diagnostic Procedure

Step | Inspection | Action
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1 | INSPECT BATTERY • Refer to the battery inspection and inspect the battery. (See BATTERY INSPECTION [L8, LF].) • Is the battery normal? | Yes | Go to the next step.
No | Replace or charge the battery. (See BATTERY REMOVAL/INSTALLATION [L8, LF].) (See BATTERY RECHARGING [L8, LF].) Go to Step 5.
2 | INSPECT FUSE • Switch the ignition to LOCK. • Disconnect the negative battery cable and wait 1 min or more. • Remove the ENGINE 15 A fuse. • Is the fuse normal? | Yes | After installing the ENGINE 15 A fuse, go to the next step.
No | Replace the ENGINE 15 A fuse. Go to Step 5.
3 | INSPECT WIRING HARNESS BETWEEN ACTIVE BONNET CONTROL MODULE AND IG1 RELAY Warning • Handling the component parts improperly can accidentally operate the active bonnet actuator, which may seriously injure you. Read the service warnings and cautions before handling the component parts of the active bonnet. (See ACTIVE BONNET SERVICE WARNINGS.) (See ACTIVE BONNET SERVICE CAUTIONS.) • Disconnect the active bonnet actuator (RH, LH) connector. • Remove the partition board. (See PARTITION BOARD REMOVAL/INSTALLATION.) • Remove the trunk side trim (RH). (See TRUNK SIDE TRIM REMOVAL/INSTALLATION.) • Disconnect all of the active bonnet control module connectors. (See ACTIVE BONNET CONTROL MODULE REMOVAL/INSTALLATION.) • Connect the negative battery cable. • Switch the ignition ON. • Measure the voltage of the active bonnet control module terminal 3A (wiring harness side). Note • Measure the voltage while shaking the wiring harness between the active bonnet control module and the IG1 relay. • Is the voltage between 8―17.9 V? | Yes | Go to the next step.
No | Replace the wiring harness between the active bonnet control module and the IG1 relay. Go to Step 5.
4 | INSPECT ACTIVE BONNET CONTROL MODULE (RIGHT) CIRCUIT FOR OPEN CIRCUIT • Verify that the active bonnet control module connector is disconnected. • Switch the ignition to LOCK. • Disconnect the negative battery cable and wait 1 min or more. • Inspect for continuity between the following terminals (vehicle wiring harness side) and body ground. ― Active bonnet control module terminal 3F ― Active bonnet control module terminal 3H Note • Inspect for continuity while shaking the wiring harness between the active bonnet control module and body ground. • Is there continuity? | Yes | Go to the next step.
No | Replace the wiring harness, then go to the next step.
5 | PERFORM DTC INSPECTION FOR ACTIVE BONNET CONTROL MODULE • Connect the active bonnet control module connector. • Reconnect all the disconnected connectors. • Connect the negative battery cable. • Switch the ignition ON. • Clear the DTC for the active bonnet control module using the M-MDS. (See CLEARING DTC [ACTIVE BONNET].) • Perform the active bonnet control module DTC inspection using the M-MDS. (See DTC INSPECTION [ACTIVE BONNET].) • Is the same DTC displayed? | Yes | Replace the active bonnet control module. (See ACTIVE BONNET CONTROL MODULE REMOVAL/INSTALLATION.)
No | DTC troubleshooting completed.