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Sonar System (Convertible): Diagnosis Infiniti Q60 I

Collision/avoidance 16 illustrations ~1150 words

DTC INDEX

DTCDescription
DTC B2704CORNER SENSOR [RL]
DTC B2705SENSOR HARNESS OPEN [CR-RL]
DTC B2706CORNER SENSOR [RR]
DTC B2707SENSOR HARNESS OPEN [CR-RR]
DTC B2708CENTER SENSOR [BL]
DTC B2709SENSOR HARNESS OPEN [CT-BL]
DTC B270ACENTER SENSOR [BR]
DTC B270BSENSOR HARNESS OPEN [CT-BR]

DTC INDEX

SELF-DIAGNOSTIC RESULTS

For details, refer to " DTC INDEX ".

ACTIVE TEST

Active test itemFunction
BUZZERThis test is able to check buzzer operation.
CANCEL SWThis test is able to check cancel indicator lamp operation.
SONAR SENSORThis test is able to check each sonar sensor operation.

VALUES ON THE DIAGNOSIS TOOL

Note. The following table includes information (items) inapplicable to this vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items.

Monitor ItemConditionValue/Status
REAR BUZZERIgnition switch ONBuzzer output condition.On
Buzzer non-output condition.Off
REVERSE RANGEIgnition switch ONSelector lever in reverse position.On
Other than selector lever in reverse position.Off
CANCEL SWIgnition switch ONWhile pressing the sonar cancel switch.On
Other than above.Off
CANCEL SW INDIgnition switch ONWhen sonar cancel switch indicator lamp is ON.On
When sonar cancel switch indicator lamp is blinking.Blink
When sonar cancel switch indicator lamp is OFF.Off
CR SEN [RL]Ignition switch ONWhen a sensor is abnormal.ERROR
When a sensor is not detection.LV.0
The distance between the corner sensor and an obstacle is 50 cm (19.6 in) or more and less then 60 cm (23.6 in).LV.2
The distance between the corner sensor and an obstacle is 30 cm (11.8 in) or more and less then 50 cm (19.6 in).LV.3
The distance between corner sensor and an obstacle less than 30 cm (11.8 in).LV.4
CR SEN [RR]Ignition switch ONWhen a sensor is abnormal.ERROR
When a sensor is not detection.LV.0
The distance between the corner sensor and an obstacle is 50 cm (19.6 in) or more and less then 60 cm (23.6 in).LV.2
The distance between the corner sensor and an obstacle is 30 cm (11.8 in) or more and less then 50 cm (19.6 in).LV.3
The distance between corner sensor and an obstacle less than 30 cm (11.8 in).LV.4
CTR SEN [RL]Ignition switch ONWhen a sensor is abnormal.ERROR
When a sensor is not detection.LV.0
The distance between the center sensor and an obstacle is 60 cm (23.6 in) or more and less then 100 cm (39.3 in).LV.1
The distance between the center sensor and an obstacle is 50 cm (19.6 in) or more and less then 60 cm (23.6 in).LV.2
The distance between the center sensor and an obstacle is 30 cm (11.8 in) or more and less then 50 cm (19.6 in).LV.3
The distance between center sensor and an obstacle less than 30 cm (11.8 in).LV.4
CTR SEN [RR]Ignition switch ONWhen a sensor is abnormal.ERROR
When a sensor is not detection.LV.0
The distance between the center sensor and an obstacle is 60 cm (23.6 in) or more and less then 100 cm (39.3 in).LV.1
The distance between the center sensor and an obstacle is 50 cm (19.6 in) or more and less then 60 cm (23.6 in).LV.2
The distance between the center sensor and an obstacle is 30 cm (11.8 in) or more and less then 50 cm (19.6 in).LV.3
The distance between center sensor and an obstacle less than 30 cm (11.8 in).LV.4
DISPLAY INFOIgnition switch ONIcon display indication condition.On
Icon display non-indication condition.Off

CONSULT MONITOR ITEM DESCRIPTION

Scheme 1

Scheme 1: TERMINAL LAYOUT
Scheme 1: TERMINAL LAYOUT
DTCDisplay item [Code]Malfunction is detected when...Reference
B2704CORNER SENSOR [RL] [B2704]Corner sensor rear LH is malfunctioning.B2704 CORNER SENSOR [RL]
B2705SENSOR HARNESS OPEN [CR-RL] [B2705]Corner sensor rear LH harness circuit is open.B2705 SENSOR HARNESS OPEN [CR-RL]
B2706CORNER SENSOR [RR] [B2706]Corner sensor rear RH is malfunctioning.B2706 CORNER SENSOR [RR]
B2707SENSOR HARNESS OPEN [CR-RR] [B2707]Corner sensor rear RH harness circuit is open.B2707 SENSOR HARNESS OPEN [CR-RR]
B2708CENTER SENSOR [BL] [B2708]Center sensor rear LH is malfunctioning.B2708 CENTER SENSOR [BL]
B2709SENSOR HARNESS OPEN [CT-BL] [B2709]Center sensor rear LH harness circuit is open.B2709 SENSOR HARNESS OPEN [CT-BL]
B270ACENTER SENSOR [BR] [B270A]Center sensor rear RH is malfunctioning.B270A CENTER SENSOR [BR]
B270BSENSOR HARNESS OPEN [CT-BR] [B270B]Center sensor rear RH harness circuit is open.B270B SENSOR HARNESS OPEN [CT-BR]

Note. "TIME" means the following.

  1. 0: Means detected malfunction at present. (From malfunction detection to turning ignition switch OFF)
  2. 1-39: Means detected malfunction in past.

Scheme 2

Scheme 2: WITH NAVIGATION
Scheme 2: WITH NAVIGATION

Scheme 3

Scheme 3
Scheme 3

Scheme 4

Scheme 4: Connector End Views
Scheme 4: Connector End Views

Scheme 5

Scheme 5
Scheme 5

Scheme 6

Scheme 6
Scheme 6

Scheme 7

Scheme 7
Scheme 7

Scheme 8

Scheme 8
Scheme 8

Scheme 9

Scheme 9: WITHOUT NAVIGATION
Scheme 9: WITHOUT NAVIGATION

Scheme 10

Scheme 10
Scheme 10

Scheme 11

Scheme 11: Connector End Views
Scheme 11: Connector End Views

Scheme 12

Scheme 12
Scheme 12

Scheme 13

Scheme 13
Scheme 13

Scheme 14

Scheme 14
Scheme 14

Scheme 15

Scheme 15: OVERALL SEQUENCE
Scheme 15: OVERALL SEQUENCE
  1. Reference 1... Refer to " «CONSULT FUNCTION»(ref-659809-S16940534762014100100000) ".
  2. Reference 2... Refer to " «DTC INDEX»(ref-659809-S26668951802014100100000) ".
  3. Reference 3... Refer to " «SYMPTOM TABLE»(ref-659809-S14545078772014100100000) ".

DTC DETECTION LOGIC

DTC No.CONSULT indicationDTC detection conditionTroubleshooting
B2704CORNER SENSOR [RL] [B2704]Corner sensor rear LH is malfunctioning.Replace corner sensor rear LH Refer to " REMOVAL AND INSTALLATION "
DTC No.CONSULT indicationDTC detection conditionTroubleshooting
B2705SENSOR HARNESS OPEN [CR-RL] [B2705]Corner sensor rear LH harness circuit is open.Check corner sensor rear LH circuit

Diagnosis Procedure

  1. CHECK HARNESS CORNER SENSOR REAR LH SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect sonar control unit connector and corner sensor rear LH connector. Check continuity between sonar control unit harness connector and corner sensor rear LH harness connector. Sonar control unit Corner sensor rear LH Continuity Connector Terminal Connector Terminal M44 5 B259 1 Existed Check continuity between sonar control unit harness connector and ground. Sonar control unit Ground Continuity Connector Terminal M44 5 Not existed Is the inspection result normal? YES: GO TO 2. NO: Repair harness or connector.
  2. CHECK HARNESS CORNER SENSOR REAR LH GROUND CIRCUIT Check continuity between sonar control unit harness connector and corner sensor rear LH harness connector. Sonar control unit Corner sensor rear LH Continuity Connector Terminal Connector Terminal M44 12 B259 2 Existed Is the inspection result normal? YES: INSPECTION END NO: Repair harness or connector.
DTC No.CONSULT indicationDTC detection conditionTroubleshooting
B2706CORNER SENSOR [RR] [B2706]Corner sensor rear RH is malfunctioning.Replace corner sensor rear RH Refer to " REMOVAL AND INSTALLATION "
DTC No.CONSULT indicationDTC detection conditionTroubleshooting
B2707SENSOR HARNESS OPEN [CR-RR] [B2707]Corner sensor rear RH harness circuit is open.Check corner sensor rear RH circuit
  1. CHECK HARNESS CORNER SENSOR REAR RH SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect sonar control unit connector and corner sensor rear RH connector. Check continuity between sonar control unit harness connector and corner sensor rear RH harness connector. Sonar control unit Corner sensor rear RH Continuity Connector Terminal Connector Terminal M44 6 B256 1 Existed Check continuity between sonar control unit harness connector and ground. Sonar control unit Ground Continuity Connector Terminal M44 6 Not existed Is the inspection result normal? YES: GO TO 2. NO: Repair harness or connector.
  2. CHECK HARNESS CORNER SENSOR REAR RH GROUND CIRCUIT Check continuity between sonar control unit harness connector and corner sensor rear RH harness connector. Sonar control unit Corner sensor rear RH Continuity Connector Terminal Connector Terminal M44 12 B256 2 Existed Is the inspection result normal? YES: INSPECTION END NO: Repair harness or connector.
DTC No.CONSULT indicationDTC detection conditionTroubleshooting
B2708CENTER SENSOR [BL] [B2708]Center sensor rear LH is malfunctioning.Replace center sensor rear LH Refer to " REMOVAL AND INSTALLATION "
DTC No.CONSULT indicationDTC detection conditionTroubleshooting
B2709SENSOR HARNESS OPEN [CT-BL] [B2709]Center sensor rear LH harness circuit is open.Check center sensor rear LH circuit
  1. CHECK HARNESS CENTER SENSOR REAR LH SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect sonar control unit connector and center sensor rear LH connector. Check continuity between sonar control unit harness connector and center sensor rear LH harness connector. Sonar control unit Center sensor rear LH Continuity Connector Terminal Connector Terminal M44 7 B258 1 Existed Check continuity between sonar control unit harness connector and ground. Sonar control unit Ground Continuity Connector Terminal M44 7 Not existed Is the inspection result normal? YES: GO TO 2. NO: Repair harness or connector.
  2. CHECK HARNESS CENTER SENSOR REAR LH GROUND CIRCUIT Check continuity between sonar control unit harness connector and center sensor rear LH harness connector. Sonar control unit Center sensor rear LH Continuity Connector Terminal Connector Terminal M44 12 B258 2 Existed Is the inspection result normal? YES: INSPECTION END NO: Repair harness or connector.
DTC No.CONSULT indicationDTC detection conditionTroubleshooting
B270ACENTER SENSOR [BR] [B270A]Center sensor rear RH is malfunctioning.Replace center sensor rear RH Refer to " REMOVAL AND INSTALLATION "
DTC No.CONSULT indicationDTC detection conditionTroubleshooting
B270BSENSOR HARNESS OPEN [CT-BR] [B270B]Center sensor rear RH harness circuit is open.Check center sensor rear RH circuit
  1. CHECK HARNESS CENTER SENSOR REAR RH SIGNAL CIRCUIT Turn ignition switch OFF. Disconnect sonar control unit connector and center sensor rear RH connector. Check continuity between sonar control unit harness connector and center sensor rear RH harness connector. Sonar control unit Center sensor rear RH Continuity Connector Terminal Connector Terminal M44 8 B257 1 Existed Check continuity between sonar control unit harness connector and ground. Sonar control unit Ground Continuity Connector Terminal M44 8 Not existed Is the inspection result normal? YES: GO TO 2. NO: Repair harness or connector.
  2. CHECK HARNESS CENTER SENSOR REAR RH GROUND CIRCUIT Check continuity between sonar control unit harness connector and center sensor rear RH harness connector. Sonar control unit Center sensor rear RH Continuity Connector Terminal Connector Terminal M44 12 B257 2 Existed Is the inspection result normal? YES: INSPECTION END NO: Repair harness or connector.

SONAR CONTROL UNIT: Diagnosis Procedure

  1. CHECK FUSE Check for blown fuses. Power source Fuse No. Ignition switch ACC or ON 19 Ignition switch ON or START 3 Is the inspection result normal? YES: GO TO 2. NO: Be sure to eliminate cause of malfunction before installing new fuse.
  2. CHECK POWER SUPPLY CIRCUIT Turn ignition switch ON. Check voltage between sonar control unit harness connector and ground. Signal name Connector No. Terminal No. Ignition switch position Value (Approx.) Battery power supply M44 13 OFF Battery voltage Ignition signal M44 1 ON Battery voltage Is the inspection result normal? YES: GO TO 3. NO: Repair or replace sonar control unit power supply harness.
  3. CHECK GROUND CIRCUIT Turn ignition switch OFF. Disconnect sonar control unit connector. Check continuity between sonar control unit harness connector and ground. Sonar control unit Ground Continuity Connector Terminal M44 24 Existed Is the inspection result normal? YES: INSPECTION END NO: Repair or replace sonar control unit ground harness.
  1. CHECK P RANGE SIGNAL Turn ignition switch ON. Check voltage between sonar control unit harness connector and ground. (+) (-) Condition Voltage (Approx.) Sonar control unit Connector Terminal M44 17 Ground Shift position in R position. 12.0 V Other than shift position in R position. 0 V Is the inspection result normal? YES: INSPECTION END NO: Repair harness or connector.
  1. CHECK HARNESS CANCEL SWITCH SIGNAL CIRCUIT Disconnect sonar control unit connector and cancel switch connector. Check continuity between sonar control unit harness connector and cancel switch harness connector. Sonar control unit Cancel switch Continuity Connector Terminal Connector Terminal M44 2 M153 1 Existed Check continuity between sonar control unit harness connector and ground. Sonar control unit Ground Continuity Connector Terminal M44 2 Not existed Is the inspection result normal? YES: GO TO 2. NO: Repair harness or connector.
  2. CHECK VOLTAGE SONAR CONTROL UNIT Connect sonar control unit connector. Turn ignition switch ON. Check voltage between sonar control unit harness connector and ground. (+) (-) Voltage (Approx.) Sonar control unit Connector Terminal M44 2 Ground 12.0 V Is the inspection result normal? YES: GO TO 3. NO: Replace sonar control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-659809-S01291361452014100100000) ".
  3. CHECK CANCEL SWITCH Turn ignition switch OFF. Check sonar cancel switch function. Refer to " «COMPONENT FUNCTION CHECK»(ref-659809-S00469592702014100100000) ". Is the inspection result normal? YES: GO TO 4. NO: Replace sonar cancel switch. Refer to " «REMOVAL AND INSTALLATION»(ref-659809-S15782148922014100100000) ".
  4. CHECK HARNESS CANCEL SWITCH GROUND CIRCUIT Turn ignition switch ON. Check continuity between cancel switch harness connector and ground. Cancel switch Ground Continuity Connector Terminal M153 3 Existed Is the inspection result normal? YES: INSPECTION END NO: Repair harness or connector.

Symptom Table

SymptomCheck itemDiagnosis method
All sonar sensors do not activate."SONAR" is indicated on "SELECT SYSTEM" screen after connection CONSULT.Perform "Self Diagnostic Result" of "SONAR" with CONSULT. Refer to " CONSULT FUNCTION ". Perform the on board diagnosis of MULTI AV. Refer to " ON BOARD DIAGNOSIS FUNCTION " (BOSE audio without navigation) or " ON BOARD DIAGNOSIS FUNCTION " (BOSE audio with navigation). Check reverse signal for sonar control unit. Refer to " DIAGNOSIS PROCEDURE ".
"SONAR" is not indicated on "SELECT SYSTEM" screen after connection CONSULT.Check sonar control unit power supply and ground circuit. Refer to " SONAR CONTROL UNIT: DIAGNOSIS PROCEDURE ".
Any sonar sensor does not activate.Perform "Self Diagnostic Result" of "SONAR" with CONSULT. Refer to " CONSULT FUNCTION ".
Sonar indicator is not displayed by display unit.Perform the on board diagnosis of MULTI AV. Refer to " ON BOARD DIAGNOSIS FUNCTION " (BOSE audio without navigation) or " ON BOARD DIAGNOSIS FUNCTION " (BOSE audio with navigation).
SymptomPossible cause
Unstable object detectionThe vehicle is on a rough surface, such as stone or gravel. When used in poor weather conditions, such as heavy snow/rain or strong wind. When subjected to an ultrasonic noise generated from exhaust muffler or brakes. When left standing in the hot sun or in a cold climate. When the surface of the sensor is frozen or covered with snow/dirt/moisture. When a retrofitted xenon lamp, lighted license plate, or harness is close to the sensor body or sensor harness. When subjected to loop coil noises generated from a vehicle detector placed at an intersection or coin parking area.
Object undetectableAir-containing objects, such as cloth, cotton, glass wool, dust, and snow. Thin objects, such as rope, chain, and wire. Smooth-faced objects placed in a slanting direction. Fast-moving small animals. A corner of an angular object. NOTE: If the sensor detection part is scratched, obstacles cannot be detected.
NOTE
If the sensor detection part is scratched, obstacles cannot be detected.

Scheme 16

Scheme 16: Exploded View
Scheme 16: Exploded View

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