ANSWER-BACK BUZZER DOES NOT SOUND [SECURITY AND LOCKS]

id0903k7012500

Description	ANSWER-BACK BUZZER DOES NOT SOUND
	• The keyless beeper does not sound when door lock/unlock operation is performed using the remote transmitter button.
Possible Causes	• The volume of keyless beeper is set off. • Keyless beeper malfunction • Short to power supply in wiring harness between the following terminals: ? Keyless beeper terminal A and LF control unit terminal H ? Keyless beeper terminal B and LF control unit terminal J • Short to ground in wiring harness between the following terminals: ? Keyless beeper terminal A and LF control unit terminal H ? Keyless beeper terminal B and LF control unit terminal J • Open circuit in wiring harness between the following terminals: ? Keyless beeper terminal A and LF control unit terminal H ? Keyless beeper terminal B and LF control unit terminal J • Personalization feature not set

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY PERSONALIZATION FEATURES SETTING • Verify the volume of the keyless beeper for the personalization features. (See SECURITY AND LOCKS PERSONALIZATION FEATURES SETTING PROCEDURE.) • Has the volume of the keyless beeper been set to off?	Yes	Set the volume so that the keyless beeper sounds and verify the operation. Operation is verified: • Troubleshooting completed. (Explain the servicing contents to the customer.) Operation is not verified: • Go to the next step.
1		No	Go to the next step.
2	INSPECT IF MALFUNCTION CAUSE IS SHORT TO GROUND IN WIRING HARNESS BETWEEN KEYLESS BEEPER AND LF CONTROL UNIT • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Disconnect the LF control unit connector. • Inspect for continuity between the following wiring harness terminals (vehicle wiring harness side) and body ground. ? LF control unit terminal H and ground ? LF control unit terminal J and ground • Is there continuity?	Yes	• Repair or replace the wiring harness which is shorted to ground. • After repair procedure, go to Step 5.
2		No	Go to the next step.
3	INSPECT IF MALFUNCTION CAUSE IS SHORT TO POWER SUPPLY IN WIRING HARNESS BETWEEN KEYLESS BEEPER AND LF CONTROL UNIT • Verify that the LF control unit connector is disconnected. • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Measure the voltage at the following terminals (vehicle wiring harness). ? LF control unit terminal H ? LF control unit terminal J • Is there any voltage?	Yes	• Repair or replace the wiring harness which is shorted to power supply. • After repair procedure, go to Step 5.
3		No	Go to the next step.
4	INSPECT IF MALFUNCTION CAUSE IS OPEN CIRCUIT IN WIRING HARNESS BETWEEN KEYLESS BEEPER AND LF CONTROL UNIT • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Disconnect the keyless beeper connector. • Inspect for continuity between the following terminals (vehicle wiring harness). ? Keyless beeper terminal A and LF control unit terminal H ? Keyless beeper terminal B and LF control unit terminal J • Is there continuity?	Yes	• Replace the keyless beeper. (See KEYLESS BEEPER REMOVAL/INSTALLATION.) • After replacement, go to the next step.
4		No	• Repair or replace the wiring harness for an open circuit. • After repair, go to the next step.
5	VERIFY IF MALFUNCTION CAUSE WAS CORRECTED • Does the keyless beeper sound?	Yes	Troubleshooting completed. (Explain the contents of the servicing to the customer.)
5		No	If the malfunction has not been resolved, repeat the inspection from Step 1.