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AV-50
< SERVICE INFORMATION >
TELEPHONE
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
3.
2.CHECK POWER SUPPLY CIRCUIT
1. Disconnect Bluetooth control unit connector B121.
2. Check voltage between connector terminals and ground as fol-
lows.
OK or NG
OK >> GO TO 3.
NG >> Check harness for open between Bluetooth control unit and fuse.
3.CHECK GROUND CIRCUITS
1. Turn ignition switch OFF.
2. Check continuity between the following Bluetooth control unit
terminals and ground.
OK or NG
OK >> Inspection End.
NG >> Repair or replace harness.
Basic Inspection of Hands-Free PhoneINFOID:0000000001704685
1.CHECK INDICATOR OPERATION
1. Turn ignition switch ACC.
2. Check that the indicator is blinking.
OK or NG
OK >> GO TO 2
NG >> GO TO 3
2.CHECK STEERING WHEEL AUDIO CONTROL SWITCH OPERATION
Te r m i n a l s
Ignition Switch Fuse No.
Connector Terminal
B1211 All positions 27
2 ACC/ON 20
3 ON/START 3
Terminals Ignition switch position
(+)
(–) OFF ACC ON
Connector Terminal
B1211
GroundBattery
voltageBattery
voltageBattery
voltage
20VBattery
voltageBattery
voltage
30V0VBattery
voltage
WKIA4389E
Te r m i n a l s
Continuity
Connector Terminal —
B1214
Ground Yes 20
21
23
LKIA0794E
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TELEPHONE
AV-51
< SERVICE INFORMATION >
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1. Press the SEND switch.
2. Check the indicator is blinking.
OK or NG
OK >> INSPECTION END
NG >> Check steering wheel audio control switch circuit.
3.CHECK BLUETOOTH INDICATOR OUTPUT VOLTAGE
1. Disconnect Bluetooth microphone connector.
2. Check voltage between Bluetooth microphone connector R15
terminal 4 and ground.
OK or NO
OK >> Replace Bluetooth indicator. Refer to AV-54, "Removal
and Installation".
NG >> GO TO 4.
4.CHECK BLUETOOTH INDICATOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Bluetooth control unit connector B121 and Bluetooth microphone connector R15.
3. Check continuity between Bluetooth control unit connector B121
(A) terminal 15 and Bluetooth microphone connector R15 (B)
terminal 4.
OK or NO
OK >> Replace Bluetooth control unit. Refer to AV-54,
"Removal and Installation".
NG >> Repair or replace harness.
Steering Wheel Audio Control Switch Does Not OperateINFOID:0000000001704686
1.CHECK STEERING WHEEL AUDIO CONTROL SWITCH RESISTANCE
1. Turn ignition switch OFF.
2. Disconnect steering wheel audio control switch connector.
3. Check steering wheel audio control switch. Refer to AV-27, "
Steering Switch Check (With Bluetooth)".
OK or NG
OK >> GO TO 2.
NG >> Replace steering wheel audio control switch. AV-36, "
Removal and Installation".
2.CHECK AUDIO UNIT
1. Turn ignition switch ON.
2. Check voltage between audio unit harness connector M43 ter-
minals 6, 16 and ground.
OK or NG
OK >> Replace audio unit. Refer to AV-36, "Removal and
Installation".
NG >> GO TO 5.4 - Ground : Approx. 12 V
LKIA0774E
15 - 4 : Continuity should exist
LKIA0775E
6 - Ground : Approx. 5 V
16 - Ground : Approx. 5 V
LKIA0776E
Page 411 of 2771

AV-52
< SERVICE INFORMATION >
TELEPHONE
3.CHECK BLUETOOTH CONTROL UNIT
1. Turn ignition switch ON.
2. Check voltage between Bluetooth control unit harness connec-
tor B121 terminals 17, 18 and ground.
OK or NG
OK >> Repair or replace harness.
NG >> Replace Bluetooth control unit. AV-54, "
Removal and
Installation".
Voice Activated Control Function Does Not OperateINFOID:0000000001704687
NOTE:
Even under the normal condition, Bluetooth voice guidance may not occur when pressing steering wheel
audio control switch.
BLUETOOTH VOICE GUIDANCE IS HEARD WHEN PRESSING STEERING WHEEL AUDIO CON-
TROL SWITCH
1.CHECK HARNESS BETWEEN BLUETOOTH CONTROL UNIT AND BLUETOOTH MICROPHONE
1. Turn ignition switch OFF.
2. Disconnect Bluetooth control unit connector and Bluetooth microphone connector.
3. Check continuity between Bluetooth control unit connector B121
(A) and Bluetooth microphone connector R15 (B).
4. Check continuity between Bluetooth control unit harness con-
nector B121 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2.CHECK BLUETOOTH MICROPHONE POWER SUPPLY
1. Connect Bluetooth control unit connector and Bluetooth microphone connector.
2. Turn ignition switch ON.17 - Ground : Approx. 5 V
18 - Ground : Approx. 5 V
LKIA0777E
Te r m i n a l s
Continuity
Connector Terminal Connector Terminal
A: B1216
B: R156
Ye s 78
87
29 5
Te r m i n a l s
Continuity
Connector Terminal —
A: B1217
Ground No 8
29
LKIA0778E
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TELEPHONE
AV-53
< SERVICE INFORMATION >
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3. Check voltage between Bluetooth microphone connector R15
terminal 5 and ground.
YES or NO
YES >> GO TO 3.
NO >> Replace Bluetooth control unit. Refer to AV-54,
"Removal and Installation".
3.CHECK MIC. SIGNAL
1. Check signal between Bluetooth control unit harness connector
B121 terminals 7 and 8.
OK or NG
OK >> Replace Bluetooth control unit. Refer to AV-54, "Removal and Installation".
NG >> Replace Bluetooth microphone. Refer to AV-54, "
Removal and Installation".
BLUETOOTH VOICE GUIDANCE IS NOT HEARD WHEN PRESSING STEERING WHEEL AUDIO
CONTROL SWITCH
1.CHECK STEERING WHEEL AUDIO CONTROL SWITCH CIRCUIT
Refer to AV-27, "
Steering Switch Check (With Bluetooth)".
OK or NG
OK >> GO TO 2.
NG >> Replace applicable parts.
2.CHECK BLUETOOTH VOICE SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect Bluetooth control unit connector and audio unit connector.
3. Check continuity between Bluetooth control unit harness con-
nector B121 (A) and audio unit harness connector M44 (B).
4. Check continuity between Bluetooth control unit harness con-
nector B121 (A) and ground.5 - Ground : Approx. 5 V
LKIA0779E
7 – 8:When giving a voice
LKIA0780EPKIB5037J
Te r m i n a l s
Continuity
Connector Terminal Connector Terminal
A: B1219
B: M4431
Ye s 10 33
11 2 7
LKIA0781E
Page 413 of 2771
AV-54
< SERVICE INFORMATION >
TELEPHONE
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3.CHECK MUTE SIGNAL
1. Connect Bluetooth control unit connector and audio unit connector.
2. Turn ignition switch ON.
3. Check voltage between Bluetooth control unit connector B121
terminal 11 and ground.
OK or NG
OK >> GO TO 4.
NG >> Replace audio unit. Refer toAV-36, "
Removal and Instal-
lation".
4.CHECK BLUETOOTH VOICE SIGNAL
1. Check signal between Bluetooth control unit harness connector
B121 terminals 9 and 10.
OK or NG
OK >> Replace audio unit. Refer to AV-36, "Removal and Installation".
NG >> Replace Bluetooth control unit. Refer to AV-54, "
Removal and Installation".
Removal and InstallationINFOID:0000000001704688
BLUETOOTH CONTROL UNIT
Te r m i n a l s
Continuity
Connector Terminal —
A: B1219
Ground No 10
11
11 - Ground : Approx. 5 V
LKIA0782E
9 – 10:When giving a voice
LKIA0783ESKIB3609E
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TELEPHONE
AV-55
< SERVICE INFORMATION >
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Hatchback
Sedan
LKIA0762E
1. Bluetooth control unit bracket 2. Bluetooth control unit A. Blue tooth control unit bolts
B. BLuetooth antenna feeder harness
clip (hatchback only)C. Bluetooth antenna feeder harness con-
nectorD. Bluetooth control unit connector
E. Bluetooth control unit bracket
screws⇐Front
LKIA0936E
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AV-56
< SERVICE INFORMATION >
TELEPHONE
Removal
1. For hatchback, remove luggage side lower finish (RH). Refer to EI-51, "Removal and Installation".
• Disconnect Bluetooth antenna harness clip.
2. For sedan, remove the trunk room side finisher (RH). Refer to EI-53, "
Removal and Installation".
• Disconnect the Bluetooth antenna harness connector.
3. Disconnect the Bluetooth control unit harness connector.
4. Remove the Bluetooth control unit upper and lower bracket bolts.
5. Unhook the Bluetooth control unit upper and lower brackets and remove Bluetooth control unit.
6. Remove Bluetooth control unit bracket screws and remove the upper and lower brackets from unit.
Installation
Installation is in the reverse order of removal.
BLUETOOTH ANTENNA
Hatchback
1. Bluetooth control unit bracket 2. Bluetooth control unit 3. Bluetooth antenna feeder connector
A. Bluetooth control unit bolts B. Bluetooth control unit connector⇐Front
LKIA0763E
1. Bluetooth antenna bracket 2. Bluetooth antenna A. Bluetooth antenna bracket bolts
B. Bluetooth antenna screws C. Bluetooth antenna feeder harness
clips
Page 416 of 2771

TELEPHONE
AV-57
< SERVICE INFORMATION >
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Sedan
Removal
1. For hatchback, remove luggage side lower finisher (RH). Refer to EI-51, "Removal and Installation".
2. For sedan, fold the rear seat back down, remove the seat back finisher (RH). Refer to EI-53, "
Removal
and Installation".
3. Disconnect the Bluetooth antenna feeder harness clips.
4. Disconnect the Bluetooth antenna feeder harness connector.
5. Remove the Bluetooth antenna bracket bolt(s) and remove antenna.
6. Remove the Bluetooth antenna screws and remove bracket.
Installation
Installation is in the reverse order of removal.
BLUETOOTH MICROPHONE
Removal
1. Remove over-head console assembly, roof finisher. Refer to EI-45.
2. Remove the Bluetooth microphone.
Installation
Installation is in the reverse order of removal.
LKIA0937E
1. Bluetooth antenna bracket 2. Bluetooth antenna A. Bluetooth antenna bracket bolts
B. Bluetooth antenna screws C. Bluetooth antenna feeder harness
clip⇒Front