DTC B10E7:16 [ADVANCED KEYLESS AND START SYSTEM]

id0902e1388300

Description

• Keyless control module IG1 power voltage malfunction

Possible Causes

• Keyless control module connector or terminals malfunction

• Short to ground or open circuit in ignition switch (IG1) circuit

― Short to ground in wiring harness between ENG 10 A fuse and keyless control module terminal 2C

― ENG 10 A fuse malfunction

― Open circuit in wiring harness between battery positive terminal and keyless control module terminal 2C

• Keyless control module malfunction

System Wiring Diagram

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Diagnostic Procedure

Step

Inspection

Action

1

INSPECT KEYLESS CONTROL MODULE CONNECTOR AND TERMINALS

•  Turn the ignition switch to the LOCK position.

•  Disconnect the negative battery cable.

•  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 3.

No

Go to the next step.

2

INSPECT POWER SUPPLY CIRCUIT (IG1) FOR OPEN CIRCUIT OR SHORT TO GROUND

•  Verify that the keyless control module connector is disconnected.

•  Reconnect the negative battery cable.

•  Turn the ignition switch to the ON position.

•  Measure the voltage at the keyless control module terminal 2C (wiring harness-side).

•  Is the voltage B+?

Yes

Go to the next step.

No

Inspect the ENG 10 A fuse.

•  If the fuse is melt:

―  Repair or replace the wiring harness for a possible short to ground.

―  Replace the malfunctioning fuse.

•  If the fuse is deterioration:

―  Replace the malfunctioning fuse.

•  If the fuse is normal:

―  Repair or replace the wiring harness for a possible open circuit.

Go to the next step.

3

VERIFY TROUBLESHOOTING COMPLETED

•  Make sure to reconnect all disconnected connectors.

•  Reconnect the negative battery cable.

•  Clear the DTCs using the M-MDS.
(See CLEARING DTC [ADVANCED KEYLESS AND START SYSTEM].)

•  Perform the keyless control module DTC inspection using the M-MDS.
(See DTC INSPECTION [ADVANCED KEYLESS AND START SYSTEM].)

•  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 AND START SYSTEM].)

Go to the next step.

No

Go to the next step.

4

VERIFY THAT NO OTHER DTCs ARE PRESENT

•  Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [ADVANCED KEYLESS AND START SYSTEM].)

No

DTC troubleshooting completed.

Step	Inspection		Action
1	INSPECT KEYLESS CONTROL MODULE CONNECTOR AND TERMINALS • Turn the ignition switch to the LOCK position. • Disconnect the negative battery cable. • 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 3.
1		No	Go to the next step.
2	INSPECT POWER SUPPLY CIRCUIT (IG1) FOR OPEN CIRCUIT OR SHORT TO GROUND • Verify that the keyless control module connector is disconnected. • Reconnect the negative battery cable. • Turn the ignition switch to the ON position. • Measure the voltage at the keyless control module terminal 2C (wiring harness-side). • Is the voltage B+?	Yes	Go to the next step.
2		No	Inspect the ENG 10 A fuse. • If the fuse is melt: ― Repair or replace the wiring harness for a possible short to ground. ― Replace the malfunctioning fuse. • If the fuse is deterioration: ― Replace the malfunctioning fuse. • If the fuse is normal: ― Repair or replace the wiring harness for a possible open circuit. Go to the next step.
3	VERIFY TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Reconnect the negative battery cable. • Clear the DTCs using the M-MDS. (See CLEARING DTC [ADVANCED KEYLESS AND START SYSTEM].) • Perform the keyless control module DTC inspection using the M-MDS. (See DTC INSPECTION [ADVANCED KEYLESS AND START SYSTEM].) • 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 AND START SYSTEM].) Go to the next step.
3		No	Go to the next step.
4	VERIFY THAT NO OTHER DTCs ARE PRESENT • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [ADVANCED KEYLESS AND START SYSTEM].)
4		No	DTC troubleshooting completed.