Home ReviewsRefund Car not listed?
Home/Nissan/Quest/Nissan Quest IV (2011-2015)/Repair manual/Communication Devices/Lan System (CAN) (Type 6)
Contents Wiring diagrams Section: Communication Devices All sections

Lan System (CAN) (Type 6) Nissan Quest IV

Communication Devices ~5398 words

Diagnosis Procedure

  1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. ECM Power steering control module ABS actuator and electric unit (control unit) Check the continuity between the power steering control module harness connector and the ABS actuator and electric unit (control unit) harness connector. Power steering control module harness connector ABS actuator and electric unit (control unit) harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. E34 8 E36 23 Existed 7 21 Existed Is the inspection result normal? YES (Present error): Check CAN system type decision again. YES (Past error): Error was detected in the main line between the power steering control module and the ABS actuator and electric unit (control unit). NO: Repair the main line between the power steering control module and the ABS actuator and electric unit (control unit).
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector E105 Harness connector M11 Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the following harness connectors. ABS actuator and electric unit (control unit) Harness connectors E105 and M11 Check the continuity between the ABS actuator and electric unit (control unit) harness connector and the harness connector. ABS actuator and electric unit (control unit) harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. E36 23 E105 14 Existed 21 15 Existed Is the inspection result normal? YES: GO TO 3. NO: Repair the main line between the ABS actuator and electric unit (control unit) and the harness connector E105.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Check the continuity between the harness connector and the data link connector. Harness connector Data link connector Continuity Connector No. Terminal No. Connector No. Terminal No. M11 14 M4 6 Existed 15 14 Existed Is the inspection result normal? YES (Present error): Check CAN system type decision again. YES (Past error): Error was detected in the main line between the ABS actuator and electric unit (control unit) and the data link connector. NO: Repair the main line between the harness connector M11 and the data link connector.
  1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. With automatic slide door Harness connector M79 Harness connector B225 Without automatic slide door Harness connector M11 Harness connector E105 Check the continuity between the data link connector and the harness connector. With automatic slide door Data link connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M4 6 M79 9 Existed 14 10 Existed Without automatic slide door Data link connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M4 6 M11 41 Existed 14 40 Existed Is the inspection result normal? YES (Present error): Check CAN system type decision again. YES (Past error): Error was detected in the main line between the data link connector and the air bag diagnosis sensor unit. NO: Repair the main line between the data link connector and the air bag diagnosis sensor unit.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector M79 Harness connector B225 Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the harness connectors M79 and B225. Check the continuity between the data link connector and the harness connector. Data link connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M4 6 M79 9 Existed 14 10 Existed Is the inspection result normal? YES: GO TO 3. NO: Repair the main line between the air bag diagnosis sensor unit and the harness connector M79.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the connector of sliding door control unit RH. Check the continuity between the harness connector and the sliding door control unit RH harness connector. Harness connector Sliding door control unit RH harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. B225 9 B247 10 Existed 10 9 Existed Is the inspection result normal? YES (Present error): Check CAN system type decision again. YES (Past error): Error was detected in the main line between the air bag diagnosis sensor unit and the sliding door control unit RH. NO: Repair the main line between the harness connector B225 and the sliding door control unit RH.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (connector side and harness side). Harness connector B228 Harness connector B19 Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the following harness connectors. Sliding door control unit RH Harness connectors B228 and B19 Check the continuity between the sliding door control unit RH harness connector and the harness connector. Sliding door control unit RH harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. B247 10 B228 2 Existed 9 1 Existed Is the inspection result normal? YES: GO TO 3. NO: Repair the main line between the sliding door control unit RH and the harness connector B228.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the harness connectors B89 and B530. Check the continuity between the harness connectors. Harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. B19 2 B89 13 Existed 1 12 Existed Is the inspection result normal? YES (Present error): Check CAN system type decision again. YES (Past error): Error was detected in the main line between the sliding door control unit RH and the driver seat control unit. NO: Repair the main line between the harness connectors B19 and B89.
  1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. ECM Harness connectors B530 and B89 Sliding door control unit LH Check the continuity between the harness connector and the sliding door control unit LH harness connector. Harness connector Sliding door control unit LH harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. B89 13 B45 10 Existed 12 9 Existed Is the inspection result normal? YES (Present error): Check CAN system type decision again. YES (Past error): Error was detected in the main line between the driver seat control unit and the sliding door control unit LH. NO: Repair the main line between the harness connector B89 and the sliding door control unit LH.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the ECM for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of ECM. Check the resistance between the ECM harness connector terminals. ECM harness connector Resistance (ohms) Connector No. Terminal No. E16 114 113 Approx. 108 - 132 Is the measurement value within the specification? YES: GO TO 3. NO: Repair the ECM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the ECM. Refer to " «DIAGNOSIS PROCEDURE»(/nissan/quest/iv-2010-2024/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-symptom-tests) ". Is the inspection result normal? YES (Present error): Replace the ECM. Refer to the " «REMOVAL AND INSTALLATION»(/nissan/quest/iv-2010-2024/remont/testing-diagnostics/#engine-control-system-diagnostic-codes-symptom-tests) ". YES (Past error): Error was detected in the ECM branch line. NO: Repair the power supply and the ground circuit.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the power steering control module for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of power steering control module. Check the resistance between the power steering control module harness connector terminals. Power steering control module harness connector Resistance (ohms) Connector No. Terminal No. E34 8 7 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3. NO: Repair the power steering control module branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the power steering control module. Refer to " «DIAGNOSIS PROCEDURE»(ref-672658-S14792186632014112400000) ". Is the inspection result normal? YES (Present error): Replace the power steering oil pump assembly. Refer to " «REMOVAL AND INSTALLATION»(ref-672626-S16919633442014112400000) ". YES (Past error): Error was detected in the power steering control module branch line. NO: Repair the power supply and the ground circuit.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of ABS actuator and electric unit (control unit). Check the resistance between the ABS actuator and electric unit (control unit) harness connector terminals. ABS actuator and electric unit (control unit) harness connector Resistance (ohms) Connector No. Terminal No. E36 23 21 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3. NO: Repair the ABS actuator and electric unit (control unit) branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to " «DIAGNOSIS PROCEDURE»(ref-672633-S15527029392014112400000) ". Is the inspection result normal? YES (Present error): Replace the ABS actuator and electric unit (control unit). Refer to " «REMOVAL AND INSTALLATION»(ref-672633-S33885166952014112400000) ". YES (Past error): Error was detected in the ABS actuator and electric unit (control unit) branch line. NO: Repair the power supply and the ground circuit.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). TCM Harness connector F123 Harness connector E6 Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of TCM. Check the resistance between the TCM harness connector terminals. TCM harness connector Resistance (ohms) Connector No. Terminal No. F23 32 31 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3. NO: Repair the TCM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the TCM. Refer to " «DIAGNOSIS PROCEDURE»(ref-672632-S15212660532014112400000) ". Is the inspection result normal? YES (Present error): Replace the TCM. Refer to " «REMOVAL AND INSTALLATION»(ref-672632-S40833881532014112400000) ". YES (Past error): Error was detected in the TCM branch line. NO: Repair the power supply and the ground circuit.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of BCM. Check the resistance between the BCM harness connector terminals. BCM harness connector Resistance (ohms) Connector No. Terminal No. M121 39 40 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3. NO: Repair the BCM branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the BCM. Refer to " «DIAGNOSIS PROCEDURE»(ref-672646-S35300407782014112400000) ". Is the inspection result normal? YES (Present error): Replace the BCM. Refer to " «REMOVAL AND INSTALLATION»(ref-672646-S20942395972014112400000) ". YES (Past error): Error was detected in the BCM branch line. NO: Repair the power supply and the ground circuit.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side). Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Check the resistance between the data link connector terminals. Data link connector Resistance (ohms) Connector No. Terminal No. M4 6 14 Approx. 54 - 66 Is the measurement value within the specification? YES (Present error): Check CAN system type decision again. YES (Past error): Error was detected in the data link connector branch line circuit. NO: Repair the data link connector branch line.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the combination meter for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of combination meter. Check the resistance between the combination meter harness connector terminals. Combination meter harness connector Resistance (ohms) Connector No. Terminal No. M34 21 22 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3. NO: Repair the combination meter branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the combination meter. Refer to " «COMBINATION METER: DIAGNOSIS PROCEDURE»(ref-672645-S37918920352014112400000) ". Is the inspection result normal? YES (Present error): Replace the combination meter. Refer to " «REMOVAL AND INSTALLATION»(ref-672645-S26037931462014112400000) ". YES (Past error): Error was detected in the combination meter branch line. NO: Repair the power supply and the ground circuit.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of steering angle sensor. Check the resistance between the steering angle sensor harness connector terminals. Steering angle sensor harness connector Resistance (ohms) Connector No. Terminal No. M30 5 2 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3. NO: Repair the steering angle sensor branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the steering angle sensor. Refer to " «WIRING DIAGRAM»(ref-672633-S34157366012014112400000) ". Is the inspection result normal? YES (Present error): Replace the steering angle sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-672633-S16994138752014112400000) ". YES (Past error): Error was detected in the steering angle sensor branch line. NO: Repair the power supply and the ground circuit.
WARNINGAlways observe the following items for preventing accidental activation. Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes or more. (To discharge backup capacitor.) Never use unspecified tester or other measuring device.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES: GO TO 2. NO: Replace the main harness.
  2. CHECK AIR BAG DIAGNOSIS SENSOR UNIT Check the air bag diagnosis sensor unit. Refer to " «DIAGNOSIS AND REPAIR WORK FLOW»(ref-672621-S24438702272014112400000) ". Is the inspection result normal? YES: Replace the main harness. NO: Replace parts whose air bag system has a malfunction.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). AV control unit Harness connector M157 Harness connector M46 Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of AV control unit. Check the resistance between the AV control unit harness connector terminals. Models without navigation system AV control unit harness connector Resistance (ohms) Connector No. Terminal No. M174 81 80 Approx. 54 - 66 Models with navigation system AV control unit harness connector Resistance (ohms) Connector No. Terminal No. M180 90 74 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3. NO: Repair the AV control unit branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the AV control unit. Refer to the following. Base audio with separate display: " «AV CONTROL UNIT: DIAGNOSIS PROCEDURE»(ref-672667-S35749041232014112400000) " BOSE audio without navigation: " «AV CONTROL UNIT: DIAGNOSIS PROCEDURE»(ref-672661-S28267962912014112400000) " BOSE audio with navigation: " «AV CONTROL UNIT: DIAGNOSIS PROCEDURE»(ref-672660-S36914145612014112400000) " Is the inspection result normal? YES (Present error): Replace the AV control unit. Refer to the following. Base audio with separate display: " «REMOVAL AND INSTALLATION»(ref-672667-S05679706252014112400000) " BOSE audio without navigation: " «REMOVAL AND INSTALLATION»(ref-672661-S38174634402014112400000) " BOSE audio with navigation: " «REMOVAL AND INSTALLATION»(ref-672660-S07312631322014112400000) " YES (Past error): Error was detected in the AV control unit branch line. NO: Repair the power supply and the ground circuit.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the around view monitor control unit for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of around view monitor control unit. Check the resistance between the around view monitor control unit harness connector terminals. Around view monitor control unit harness connector Resistance (ohms) Connector No. Terminal No. M253 12 10 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3. NO: Repair the around view monitor control unit branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the around view monitor control unit. Refer to " «AROUND VIEW MONITOR CONTROL UNIT: DIAGNOSIS PROCEDURE»(ref-672660-S34531323332014112400000) ". Is the inspection result normal? YES (Present error): Replace the around view monitor control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-672660-S15657782322014112400000) ". YES (Past error): Error was detected in the around view monitor control unit branch line. NO: Repair the power supply and the ground circuit.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the BSW control module for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of BSW control module. Check the resistance between the BSW control module harness connector terminals. BSW control module harness connector Resistance (ohms) Connector No. Terminal No. M61 14 15 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3. NO: Repair the BSW control module branch line (CAN communication circuit side).
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the BSW control module. Refer to " «BSW CONTROL MODULE: DIAGNOSIS PROCEDURE»(ref-672676-S10906663982014112400000) ". Is the inspection result normal? YES (Present error): Replace the BSW control module. Refer to " «REMOVAL AND INSTALLATION»(ref-672676-S07568770482014112400000) ". YES (Past error): Error was detected in the BSW control module branch line (CAN communication circuit side). NO: Repair the power supply and the ground circuit.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the sliding door control unit RH for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of sliding door control unit RH. Check the resistance between the sliding door control unit RH harness connector terminals. Sliding door control unit RH harness connector Resistance (ohms) Connector No. Terminal No. B247 10 9 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3. NO: Replace the body No. 2 harness.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the sliding door control unit RH. Refer to " «SLIDING DOOR CONTROL UNIT: DIAGNOSIS PROCEDURE»(/nissan/quest/iv-2010-2024/remont/door-locks-anti-theft-systems/#door-lock) ". Is the inspection result normal? YES (Present error): Replace the sliding door control unit RH. Refer to " «RH: REMOVAL AND INSTALLATION»(/nissan/quest/iv-2010-2024/remont/door-locks-anti-theft-systems/#door-lock) ". YES (Past error): Error was detected in the sliding door control unit RH branch line. NO: Repair the power supply and the ground circuit.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). Driver seat control unit Harness connector B530 Harness connector B89 Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of driver seat control unit. Check the resistance between the driver seat control unit harness connector terminals. Driver seat control unit harness connector Resistance (ohms) Connector No. Terminal No. B552 1 17 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3. NO: Repair the driver seat control unit branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the driver seat control unit. Refer to " «DRIVER SEAT CONTROL UNIT: DIAGNOSIS PROCEDURE»(ref-672616-S28568110712014112400000) ". Is the inspection result normal? YES (Present error): Replace the driver seat control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-672616-S21943499772014112400000) ". YES (Past error): Error was detected in the driver seat control unit branch line. NO: Repair the power supply and the ground circuit.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the sliding door control unit LH for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of sliding door control unit LH. Check the resistance between the sliding door control unit LH harness connector terminals. Sliding door control unit LH harness connector Resistance (ohms) Connector No. Terminal No. B45 10 9 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3. NO: Repair the sliding door control unit LH branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the sliding door control unit LH. Refer to " «SLIDING DOOR CONTROL UNIT: DIAGNOSIS PROCEDURE»(/nissan/quest/iv-2010-2024/remont/door-locks-anti-theft-systems/#door-lock) ". Is the inspection result normal? YES (Present error): Replace the sliding door control unit LH. Refer to " «LH: REMOVAL AND INSTALLATION»(/nissan/quest/iv-2010-2024/remont/door-locks-anti-theft-systems/#door-lock) ". YES (Past error): Error was detected in the sliding door control unit LH branch line. NO: Repair the power supply and the ground circuit.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the automatic back door control module for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of automatic back door control module. Check the resistance between the automatic back door control module harness connector terminals. Automatic back door control module harness connector Resistance (ohms) Connector No. Terminal No. B8 26 25 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3. NO: Repair the automatic back door control module branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the automatic back door control module. Refer to " «AUTOMATIC BACK DOOR CONTROL MODULE: DIAGNOSIS PROCEDURE»(/nissan/quest/iv-2010-2024/remont/door-locks-anti-theft-systems/#door-lock) ". Is the inspection result normal? YES (Present error): Replace the automatic back door control module. Refer to " «REMOVAL AND INSTALLATION»(/nissan/quest/iv-2010-2024/remont/door-locks-anti-theft-systems/#door-lock) ". YES (Past error): Error was detected in the automatic back door control module branch line. NO: Repair the power supply and the ground circuit.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). IPDM E/R Harness connector E105 Harness connector M11 Harness connector M77 (With automatic sliding door) Harness connector B11 (With automatic sliding door) Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of IPDM E/R. Check the resistance between the IPDM E/R harness connector terminals. IPDM E/R harness connector Resistance (ohms) Connector No. Terminal No. E11 40 39 Approx. 108 - 132 Is the measurement value within the specification? YES: GO TO 3. NO: Repair the IPDM E/R branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the IPDM E/R. Refer to " «DIAGNOSIS PROCEDURE»(ref-672640-S32956090052014112400000) ". Is the inspection result normal? YES (Present error): Replace the IPDM E/R. Refer to " «REMOVAL AND INSTALLATION»(ref-672640-S20207086822014112400000) ". YES (Past error): Error was detected in the IPDM E/R branch line. NO: Repair the power supply and the ground circuit.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the terminals and connectors of the side radar LH for damage, bend and loose connection (unit side and connector side). Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of side radar LH. Check the resistance between the side radar LH harness connector terminals. Side radar LH harness connector Resistance (ohms) Connector No. Terminal No. B57 4 3 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3. NO: Repair the side radar LH branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the side radar LH. Refer to " «SIDE RADAR LH: DIAGNOSIS PROCEDURE»(ref-672676-S21313570602014112400000) ". Is the inspection result normal? YES (Present error): Replace the side radar LH. Refer to " «REMOVAL AND INSTALLATION»(ref-672676-S41539123342014112400000) ". YES (Past error): Error was detected in the side radar LH branch line. NO: Repair the power supply and the ground circuit.
  1. CHECK CONNECTOR Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). Side radar RH Harness connector B310 Harness connector B28 Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS FOR OPEN CIRCUIT Disconnect the connector of side radar RH. Check the resistance between the side radar RH harness connector terminals. Side radar RH harness connector Resistance (ohms) Connector No. Terminal No. B317 4 3 Approx. 108 - 132 Is the measurement value within the specification? YES: GO TO 3. NO: Repair the side radar RH branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the side radar RH. Refer to " «SIDE RADAR RH: DIAGNOSIS PROCEDURE»(ref-672676-S30429988312014112400000) ". Is the inspection result normal? YES (Present error): Replace the side radar RH. Refer to " «REMOVAL AND INSTALLATION»(ref-672676-S41539123342014112400000) ". YES (Past error): Error was detected in the side radar RH branch line. NO: Repair the power supply and the ground circuit.
  1. CONNECTOR INSPECTION Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect all the unit connectors on CAN communication circuit. Check terminals and connectors for damage, bend and loose connection. Is the inspection result normal? YES: GO TO 2. NO: Repair the terminal and connector.
  2. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the data link connector terminals. Data link connector Continuity Connector No. Terminal No. M4 6 14 Not existed Is the inspection result normal? YES: GO TO 3. NO: Check the harness and repair the root cause.
  3. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the data link connector and the ground. Data link connector Ground Continuity Connector No. Terminal No. M4 6 Not existed 14 Not existed Is the inspection result normal? YES: GO TO 4. NO: Check the harness and repair the root cause.
  4. CHECK ECM AND IPDM E/R TERMINATION CIRCUIT Remove the ECM and the IPDM E/R. Check the resistance between the ECM terminals. ECM Resistance (ohms) Terminal No. 114 113 Approx. 108 - 132 Check the resistance between the IPDM E/R terminals. IPDM E/R Resistance (ohms) Terminal No. 40 39 Approx. 108 - 132 Is the measurement value within the specification? YES: GO TO 5. NO: Replace the ECM and/or the IPDM E/R.
  5. CHECK SYMPTOM Connect all the connectors. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. Inspection result Reproduced: GO TO 6. Non-reproduced: Start the diagnosis again. Follow the trouble diagnosis procedure when past error is detected.
  6. CHECK UNIT REPRODUCTION Perform the reproduction test as per the following procedure for each unit. Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect one of the unit connectors of CAN communication circuit. NOTE: ECM and IPDM E/R have a termination circuit. Check other units first. Connect the battery cable to the negative terminal. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. NOTE: Although unit-related error symptoms occur, do not confuse them with other symptoms. Inspection result Reproduced: Connect the connector. Check other units as per the above procedure. Non-reproduced: Replace the unit whose connector was disconnected.
  1. CHECK CAN DIAGNOSIS Check the CAN diagnosis results from CONSULT to see that the CAN communication circuit has no malfunction. Is the CAN communication circuit normal? YES: GO TO 2. NO: Check and repair CAN communication circuit.
  2. CONNECTOR INSPECTION Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Check the following terminals and connectors for damage, bend and loose connection (unit side and connector side). BSW control module Side radar LH Side radar RH Harness connector M77 Harness connector B11 Harness connector B28 Harness connector B310 Is the inspection result normal? YES: GO TO 3. NO: Repair the terminal and connector.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the following harness connectors. BSW control module Side radar RH Check the continuity between the BSW control module harness connector and the side radar RH harness connector. BSW control module harness connector Side radar RH harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M61 7 B317 4 Existed 8 3 Existed Is the inspection result normal? YES: GO TO 4. NO: Repair the BSW control module branch line (BSW communication circuit side).
  4. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Disconnect the connector of side radar LH. Check the continuity between the BSW control module harness connector terminals. BSW control module harness connector Continuity Connector No. Terminal No. M61 7 8 Not existed Is the inspection result normal? YES: GO TO 5. NO: Check the harness and repair the root cause.
  5. CHECK HARNESS CONTINUITY (SHORT CIRCUIT) Check the continuity between the BSW control module harness connector and the ground. BSW control module harness connector Ground Continuity Connector No. Terminal No. M61 7 Not existed 8 Not existed Is the inspection result normal? YES: GO TO 6. NO: Check the harness and repair the root cause.
  6. CHECK TERMINATION CIRCUIT Remove the BSW control module and the side radar RH. Check the resistance between the BSW control module terminals. BSW control module Resistance (ohms) Terminal No. 7 8 Approx. 108 - 132 Check the resistance between the side radar RH terminals. Side radar RH Resistance (ohms) Terminal No. 4 3 Approx. 108 - 132 Is the inspection result normal? YES: GO TO 7. NO: Replace the BSW control module and/or the side radar RH.
  7. CHECK SYMPTOM Connect all the connectors. Check if the symptoms described in the "Symptom (Results from interview with customer)" are reproduced. Inspection result Reproduced: Replace the side radar LH. Non-reproduced: Start the diagnosis again. Follow the trouble diagnosis procedure when past error is detected.