DTC B108B:29 [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM]

id09021c398900

DESCRIPTION

Error signal of push button start

DETECTION CONDITION

•  A combination of the push button start 1 and 2 signals is abnormal.

POSSIBLE CAUSE

•  Push button start connector or terminals malfunction

•  Keyless control module connector or terminals malfunction

•  Short to ground in wiring harness between the following terminals:

―  Push button start terminal A—Keyless control module terminal 2J

―  Push button start terminal B—Keyless control module terminal 2K

•  Short to power supply in wiring harness between the following terminals:

―  Push button start terminal A—Keyless control module terminal 2J

―  Push button start terminal B—Keyless control module terminal 2K

•  Push button start malfunction

•  Open circuit in wiring harness between the following terminals:

―  Push button start terminal A—Keyless control module terminal 2J

―  Push button start terminal B—Keyless control module terminal 2K

•  Keyless control module malfunction

DESCRIPTION	Error signal of push button start
DETECTION CONDITION	• A combination of the push button start 1 and 2 signals is abnormal.
POSSIBLE CAUSE	• Push button start connector or terminals malfunction • Keyless control module connector or terminals malfunction • Short to ground in wiring harness between the following terminals: ― Push button start terminal A—Keyless control module terminal 2J ― Push button start terminal B—Keyless control module terminal 2K • Short to power supply in wiring harness between the following terminals: ― Push button start terminal A—Keyless control module terminal 2J ― Push button start terminal B—Keyless control module terminal 2K • Push button start malfunction • Open circuit in wiring harness between the following terminals: ― Push button start terminal A—Keyless control module terminal 2J ― Push button start terminal B—Keyless control module terminal 2K • Keyless control module malfunction

Diagnostic Procedure

Step	Inspection		Action
1	INSPECT PUSH BUTTON START CONNECTOR CONDITION • Switch the ignition to off. • Disconnect the negative battery cable. • Disconnect the push button start 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.
1		No	Go to the next step.
2	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.
2		No	Go to the next step.
3	INSPECT PUSH BUTTON START CIRCUIT FOR SHORT TO GROUND • Push button start and keyless control module connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side) and body ground: ― Push button start terminal A ― Push button start terminal B • Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to ground, then go to Step 7.
3		No	Go to the next step.
4	INSPECT PUSH BUTTON START CIRCUIT FOR SHORT TO POWER SUPPLY • Push button start and keyless control module connectors are disconnected. • Reconnect the negative battery cable. • Switch the ignition to ON. • Measure the voltage at the following terminals (wiring harness-side): ― Push button start terminal A ― Push button start terminal B • Is there any voltage?	Yes	Repair or replace the wiring harness for a possible short to power supply, then go to Step 7.
4		No	Go to the next step.
5	INSPECT PUSH BUTTON START • Switch the ignition to off. • Disconnect the negative battery cable. • Inspect the push button start. (See PUSH BUTTON START INSPECTION [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM].) • Is there any malfunction?	Yes	Replace the push button start, then go to Step 7. (See PUSH BUTTON START REMOVAL/INSTALLATION [WITH ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM].)
5		No	Go to the next step.
6	INSPECT PUSH BUTTON START CIRCUIT FOR OPEN CIRCUIT • Push button start and keyless control module connectors are disconnected. • Inspect for continuity between the following terminals (wiring harness-side): ― Push button start terminal A—Keyless control module terminal 2J ― Push button start terminal B—Keyless control module terminal 2K • Is there continuity?	Yes	Go to the next step.
6		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. (See CLEARING DTC [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM].) • Perform the advanced keyless entry and push button start system DTC inspection using the M-MDS. (See DTC INSPECTION [ADVANCED KEYLESS ENTRY AND PUSH BUTTON START SYSTEM].) • 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].)
7		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].)
8		No	DTC troubleshooting completed.