Home ReviewsRefund Car not listed?
Home/Nissan/Armada/Nissan Armada I рестайлинг (2007-2016)/Repair manual/Communication Devices/Lan System: Diagnosis
Contents Section: Communication Devices All sections

Lan System: Diagnosis Nissan Armada I рестайлинг

Communication Devices 13 illustrations ~5668 words

Precaution for Trouble Diagnosis

CAUTIONNever apply 7.0 V or more to the measurement terminal. Use a tester with open terminal voltage of 7.0 V or less. Turn the ignition switch OFF and disconnect the battery cable from the negative terminal when checking the harness.

Scheme 7

Scheme 7: Precaution for Harness Repair
Scheme 7: Precaution for Harness Repair

Scheme 8

Scheme 8
Scheme 8
  1. Solder the repaired area and wrap tape around the soldered area. NOTE: A fray of twisted lines must be within 110 mm (4.33 in).
  2. Bypass connection is never allowed at the repaired area. NOTE: Bypass connection may cause CAN communication error. The spliced wire becomes separated and the characteristics of twisted line are lost.
  3. Replace the applicable harness as an assembly if error is detected on the shield lines of CAN communication line.

WHEN DTC OF CAN COMMUNICATION IS INDICATED EVEN THOUGH CAN COMMUNICATION SYSTEM IS NORMAL

  1. Removal/installation of parts: Error may be detected when removing and installing CAN communication unit and related parts while turning the ignition switch ON. (A DTC except for CAN communication may be detected.)
  2. Fuse blown out (removed): CAN communication of the unit may cease.
  3. Voltage drop: Error may be detected if voltage drops due to discharged battery when turning the ignition switch ON (Depending on the control unit which carries out CAN communication).
  4. Error may be detected if the power supply circuit of the control unit, which carries out CAN communication, malfunctions (Depending on the control unit which carries out CAN communication).
  5. Error may be detected if reprogramming is not completed normally.
CAUTIONCAN communication system is normal if DTC of CAN communication is indicated on SELF-DIAG RESULTS of CONSULT-III under the above conditions. Erase the memory of the self-diagnosis of each unit.

Symptom When Error Occurs in CAN Communication System

In CAN communication system, multiple units mutually transmit and receive signals. Each unit cannot transmit and receive signals if any error occurs on CAN communication line. Under this condition, multiple control units related to the root cause malfunction or go into fail-safe mode.

CAN Diagnostic Support Monitor

CONSULT-III and CAN diagnostic support monitor (on-board diagnosis function) are used for detecting root cause.

Scheme 9

Scheme 9: MONITOR ITEM (CONSULT-III)
Scheme 9: MONITOR ITEM (CONSULT-III)

Without PAST

ItemPRSNTDescription
Initial diagnosisOKNormal at present
NGControl unit error (Except for some control units)
Transmission diagnosisOKNormal at present
UNKWNUnable to transmit signals for 2 seconds or more.
Diagnosis not performed
Control unit name (Reception diagnosis)OKNormal at present
UNKWNUnable to receive signals for 2 seconds or more.
Diagnosis not performed
No control unit for receiving signals. (No applicable optional parts)

MONITOR ITEM DESCRIPTION CHART - WITHOUT PAST

With PAST

ItemPRSNTPASTDescription
Transmission diagnosisOKOKNormal at present and in the past
1 - 39Normal at present, but unable to transmit signals for 2 seconds or more in the past. (The number indicates the number of ignition switch cycles from OFF to ON.)
UNKWN0Unable to transmit signals for 2 seconds or more at present.
Control unit name (Reception diagnosis)OKOKNormal at present and in the past
1 - 39Normal at present, but unable to receive signals for 2 seconds or more in the past. (The number indicates the number of ignition switch cycles from OFF to ON.)
UNKWN0Unable to receive signals for 2 seconds or more at present.
Diagnosis not performed.
No control unit for receiving signals. (No applicable optional parts)

MONITOR ITEM DESCRIPTION CHART - WITH PAST

MONITOR ITEM (ON-BOARD DIAGNOSIS)

Note. For some models, CAN communication diagnosis result is received from the vehicle monitor. (CONSULT-III is not available.)

Example: Vehicle Display

ItemResult indicatedError counterDescription
CAN_COMM (Initial diagnosis)OK0Normal at present
NG1 - 50Control unit error (The number indicates how many times diagnosis has been run.)
CAN_CIRC_1 (Transmission diagnosis)OK0Normal at present
UNKWN1 - 50Unable to transmit for 2 seconds or more at present. (The number indicates how many times diagnosis has been run.)
CAN_CIRC_2 - 9 (Reception diagnosis of each unit)OK0Normal at present
UNKWN1 - 50Unable to transmit for 2 seconds or more at present. (The number indicates how many times diagnosis has been run.)
Diagnosis not performed.
No control unit for receiving signals. (No applicable optional parts)

MONITOR ITEM DESCRIPTION CHART

Information Needed for Trouble Diagnosis

CAN communication system performs trouble diagnosis with the following tools.

ToolUsage
Interview sheetFor filling in vehicle information and interview with customer.
Data sheetFor copying on-board diagnosis data.
Diagnosis sheetFor detecting the root cause. (Diagnosis sheet includes system diagram for every CAN system type)
ECU list (On the "CAN DIAG SUPPORT MNTR")For checking the condition of control units and the status of CAN communication.
SELF-DIAG RESULTS (CONSULT-III)
CAN DIAG SUPPORT MNTR (CONSULT-III)
CAN communication signal chartFor converting information received from a customer into CAN communication signal transmission and reception. This information can be used to judge whether a circuit between control units is normal or abnormal.
Abbreviation listFor checking abbreviations in CAN communication signal chart and diagnosis sheet.

TOOLS REFERENCE CHART

INSPECTION OF VEHICLE CONDITION

  1. Check whether or not "U1000" or "U1001" is indicated on "SELF-DIAG RESULTS" by CONSULT-III. NOTE: Root cause cannot be detected using the procedure in this procedure if "U1000" or "U1001" is not indicated.
  2. Check whether the symptom is reproduced or not. NOTE: Do not turn the ignition switch OFF or disconnect the battery cable while reproducing the error. The error may temporarily correct itself, making it difficult to determine the root cause. The procedures for present errors differ from the procedures for past errors. Refer to " «DETECT THE ROOT CAUSE»(ref-382159-S15904007212011011400000) ".

CREATE DIAGNOSIS SHEET

Note. Be sure to use the diagnosis sheet for the correct CAN system type.

Print Diagnosis Sheet

Print the diagnosis sheet for the applicable CAN system type.

Check Collected Data

Make sure that all ECUs are received, referring to "ECU list".

Scheme 10

Scheme 10: CREATE DIAGNOSIS SHEET
Scheme 10: CREATE DIAGNOSIS SHEET
  1. For abbreviations, refer to " «ABBREVIATION LIST»(ref-382159-S12925153882011011400000) ".

Precautions for Trouble Diagnosis

CAUTIONNever apply 7.0 V or more to the measurement terminal. Use a tester with open terminal voltage of 7.0 V or less. Turn the ignition switch OFF and disconnect the battery cable from the negative terminal when checking the harness.

Use "CAN DIAG SUPPORT MNTR" for detecting the root cause.

DTC Index

DTCSelf-diagnosis item (CONSULT-III indication)DTC detection conditionInspection/Action
U0101LOST COMM (TCM)When ECM is not transmitting or receiving CAN communication signal of OBD (emission-related diagnosis) from TCM for 2 seconds or more.Start the inspection. Refer to the applicable section of the indicated control unit.
U0140LOST COMM (BCM)When ECM is not transmitting or receiving CAN communication signal of OBD (emission-related diagnosis) from BCM for 2 seconds or more.
U0164LOST COMM (HVAC)When ECM is not transmitting or receiving CAN communication signal of OBD (emission-related diagnosis) from A/C auto amp. or unified meter and A/C amp. for 2 seconds or more.
U1000CAN COMM CIRCUITECMWhen ECM is not transmitting or receiving CAN communication signal of OBD (emission-related diagnosis) for 2 seconds or more.
Except for ECMWhen a control unit (except for ECM) is not transmitting or receiving CAN communication signal for 2 seconds or more.
U1001CAN COMM CIRCUITWhen ECM is not transmitting or receiving CAN communication signal other than OBD (emission-related diagnosis) for 2 seconds or more.
U1002SYSTEM COMMWhen a control unit is not transmitting or receiving CAN communication signal for 2 seconds or less.
U1010CONTROL UNIT(CAN)When an error is detected during the initial diagnosis for CAN controller of each control unit.Replace the control unit indicating "U1010" or "P0607".
P0607ECM

DTC INDEX

Scheme 11

Scheme 11: Component Parts Location
Scheme 11: Component Parts Location

Scheme 12

Scheme 12: Wiring Diagram - CAN SYSTEM
Scheme 12: Wiring Diagram - CAN SYSTEM

Scheme 13

Scheme 13
Scheme 13

Scheme 14

Scheme 14
Scheme 14

Scheme 15

Scheme 15
Scheme 15

Scheme 16

Scheme 16
Scheme 16

Scheme 17

Scheme 17
Scheme 17

Scheme 18

Scheme 18
Scheme 18

Diagnosis Procedure

  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 F14 Harness connector E5 Harness connector E34 Harness connector B40 Harness connector B69 Harness connector M40 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. A/T assembly Harness connectors F14 and E5 Check the continuity between the A/T assembly harness connector and the harness connector. TERMINAL CONTINUITY REFERENCE A/T assembly harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. F9 3 F14 5 Existed 8 15 Existed Is the inspection result normal? YES: GO TO 3 . NO: Repair the main line between the A/T assembly and the harness connector F14.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the harness connectors E34 and B40. Check the continuity between the harness connectors. TERMINAL CONTINUITY REFERENCE Harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. E5 5 E34 24 Existed 15 23 Existed Is the inspection result normal? YES: GO TO 4 . NO: Repair the main line between the harness connectors E5 and E34.
  4. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the harness connectors B69 and M40. Check the continuity between the harness connectors. TERMINAL CONTINUITY REFERENCE Harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. B40 24 B69 51J Existed 23 52J Existed Is the inspection result normal? YES: GO TO 5 . NO: Repair the main line between the harness connectors B40 and B69.
  5. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the connector of AV control unit. Check the continuity between the harness connector and the AV control unit harness connector. Models with base audio TERMINAL CONTINUITY REFERENCE Harness connector AV control unit harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M40 51J M46 86 Existed 52J 87 Existed Models with BOSE audio system with NAVI TERMINAL CONTINUITY REFERENCE Harness connector AV control unit harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M40 51J M165 96 Existed 52J 97 Existed Models with BOSE audio system without NAVI TERMINAL CONTINUITY REFERENCE Harness connector AV control unit harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M40 51J M166 86 Existed 52J 87 Existed Is the inspection result normal? YES (Present error): Check the following items again. Decision of CAN system type. Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR ("ECU list" included)]. Procedure for detecting root cause. YES (Past error): Error was detected in the main line between the TCM and the AV control unit. NO: Repair the main line between the harness connector M40 and the AV 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 F14 Harness connector E5 Harness connector E34 Harness connector B40 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. A/T assembly Harness connectors F14 and E5 Check the continuity between the A/T assembly harness connector and the harness connector. TERMINAL CONTINUITY REFERENCE A/T assembly harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. F9 3 F14 5 Existed 8 15 Existed Is the inspection result normal? YES: GO TO 3 . NO: Repair the main line between the A/T assembly and the harness connector F14.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the harness connectors E34 and B40. Check the continuity between the harness connectors. TERMINAL CONTINUITY REFERENCE Harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. E5 5 E34 24 Existed 15 23 Existed Is the inspection result normal? YES: GO TO 4 . NO: Repair the main line between the harness connectors E5 and E34.
  4. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the harness connectors B37 and B200. Check the continuity between the harness connectors. TERMINAL CONTINUITY REFERENCE Harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. B40 24 B37 15 Existed 23 14 Existed Is the inspection result normal? YES (Present error): Check the following items again. Decision of CAN system type. Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR ("ECU list" included)]. Procedure for detecting root cause. YES (Past error): Error was detected in the main line between the TCM and the driver seat control unit. NO: Repair the main line between the harness connectors B40 and B37.
  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 B69 Harness connector M40 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. Harness connectors B200 and B37 Harness connectors B69 and M40 Check the continuity between the harness connectors. TERMINAL CONTINUITY REFERENCE Harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. B37 15 B69 51J Existed 14 52J Existed Is the inspection result normal? YES: GO TO 3 . NO: Repair the main line between the harness connectors B37 and B69.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the connector of AV control unit. Check the continuity between the harness connector and the AV control unit harness connector. Models with base audio TERMINAL CONTINUITY REFERENCE Harness connector AV control unit harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M40 51J M46 86 Existed 52J 87 Existed Models with BOSE audio system with NAVI TERMINAL CONTINUITY REFERENCE Harness connector AV control unit harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M40 51J M165 96 Existed 52J 97 Existed Models with BOSE audio system without NAVI TERMINAL CONTINUITY REFERENCE Harness connector AV control unit harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M40 51J M166 86 Existed 52J 87 Existed Is the inspection result normal? YES (Present error): Check the following items again. Decision of CAN system type. Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR ("ECU list" included)]. Procedure for detecting root cause. YES (Past error): Error was detected in the main line between the driver seat control unit and the AV control unit. NO: Repair the main line between the harness connector M40 and the AV control unit.
  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 AV control unit Check the continuity between the AV control unit harness connector and the data link connector. Models with base audio TERMINAL CONTINUITY REFERENCE AV control unit harness connector Data link connector Continuity Connector No. Terminal No. Connector No. Terminal No. M46 86 M22 6 Existed 87 14 Existed Models with BOSE audio system with NAVI TERMINAL CONTINUITY REFERENCE AV control unit harness connector Data link connector Continuity Connector No. Terminal No. Connector No. Terminal No. M165 96 M22 6 Existed 97 14 Existed Models with BOSE audio system without NAVI TERMINAL CONTINUITY REFERENCE AV control unit harness connector Data link connector Continuity Connector No. Terminal No. Connector No. Terminal No. M166 86 M22 6 Existed 87 14 Existed Is the inspection result normal? YES (Present error): Check the following items again. Decision of CAN system type. Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR ("ECU list" included)]. Procedure for detecting root cause. YES (Past error): Error was detected in the main line between the AV control unit and the data link connector. NO: Repair the main line between the AV control unit 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. ECM Combination meter Check the continuity between the data link connector and the combination meter harness connector. TERMINAL CONTINUITY REFERENCE Data link connector Combination meter harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M22 6 M24 11 Existed 14 12 Existed Is the inspection result normal? YES (Present error): Check the following items again. Decision of CAN system type. Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR ("ECU list" included)]. Procedure for detecting root cause. YES (Past error): Error was detected in the main line between the data link connector and the combination meter. NO: Repair the main line between the data link connector and the combination meter.
  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 M31 Harness connector E152 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. Combination meter Harness connectors M31 and E152 Check the continuity between the combination meter harness connector and the harness connector. TERMINAL CONTINUITY REFERENCE Combination meter harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M24 11 M31 31G Existed 12 42G Existed Is the inspection result normal? YES: GO TO 3 . NO: Repair the main line between the combination meter and the harness connector M31.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the connector of ABS actuator and electric unit (control unit). Check the continuity between the harness connector and the ABS actuator and electric unit (control unit) harness connector. TERMINAL CONTINUITY REFERENCE Harness connector ABS actuator and electric unit (control unit) harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. E152 31G E125 11 Existed 42G 15 Existed Is the inspection result normal? YES (Present error): Check the following items again. Decision of CAN system type. Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR ("ECU list" included)]. Procedure for detecting root cause. YES (Past error): Error was detected in the main line between the combination meter and the ABS actuator and electric unit (control unit). NO: Repair the main line between the harness connector E152 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 M31 Harness connector E152 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. Combination meter Harness connectors M31 and E152 Check the continuity between the combination meter harness connector and the harness connector. TERMINAL CONTINUITY REFERENCE Combination meter harness connector Harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. M24 11 M31 31G Existed 12 42G Existed Is the inspection result normal? YES: GO TO 3 . NO: Repair the main line between the combination meter and the harness connector M31.
  3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT) Disconnect the connector of transfer control unit. Check the continuity between the harness connector and the transfer control unit harness connector. TERMINAL CONTINUITY REFERENCE Harness connector Transfer control unit harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. E152 31G E142 7 Existed 42G 8 Existed Is the inspection result normal? YES (Present error): Check the following items again. Decision of CAN system type. Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR ("ECU list" included)]. Procedure for detecting root cause. YES (Past error): Error was detected in the main line between the combination meter and the transfer control unit. NO: Repair the main line between the harness connector E152 and the transfer control unit.
  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 Transfer control unit ABS actuator and electric unit (control unit) Check the continuity between the transfer control unit harness connector and the ABS actuator and electric unit (control unit) harness connector. TERMINAL CONTINUITY REFERENCE Transfer control unit harness connector ABS actuator and electric unit (control unit) harness connector Continuity Connector No. Terminal No. Connector No. Terminal No. E142 7 E125 11 Existed 8 15 Existed Is the inspection result normal? YES (Present error): Check the following items again. Decision of CAN system type. Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR ("ECU list" included)]. Procedure for detecting root cause. YES (Past error): Error was detected in the main line between the transfer control unit and the ABS actuator and electric unit (control unit). NO: Repair the main line between the transfer control unit 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 (unit side and connector side). ECM Harness connector E5 Harness connector F14 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. TERMINAL RESISTANCE REFERENCE ECM harness connector Resistance (ohms) Connector No. Terminal No. E16 94 86 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»(ref-382156-S38466742252011011400000) ". Is the inspection result normal? YES (Present error): Replace the ECM. Refer to " «PROCEDURE AFTER REPLACING ECM»(ref-382156-S27336151372011011400000) ". 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 A/T assembly 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 A/T assembly. Check the resistance between the A/T assembly harness connector terminals. TERMINAL RESISTANCE REFERENCE A/T assembly harness connector Resistance (ohms) Connector No. Terminal No. F9 3 8 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3 . NO: Repair the TCM branch line.
  3. CHECK HARNESS FOR OPEN CIRCUIT Remove the control valve with TCM. Refer to " «CONTROL VALVE WITH TCM, A/T FLUID TEMPERATURE SENSOR 2 AND PLUG»(ref-382157-S19453380742011011400000) ". Disconnect the connector of TCM. Check the continuity between the A/T assembly connector and the TCM harness connector. TERMINAL CONTINUITY REFERENCE A/T assembly connector TCM harness connector Continuity Terminal No. Connector No. Terminal No. 3 F502 1 Existed 8 2 Existed Is the inspection result normal? YES: GO TO 4 . NO: Repair the harness between the A/T assembly connector and the TCM harness connector.
  4. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the TCM. Refer to " «DIAGNOSIS PROCEDURE»(ref-382157-S11236618152011011400000) ". Is the inspection result normal? YES (Present error): Replace the control valve with TCM. Refer to " «CONTROL VALVE WITH TCM, A/T FLUID TEMPERATURE SENSOR 2 AND PLUG»(ref-382157-S19453380742011011400000) ". 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 following terminals and connectors for damage, bend and loose connection (unit side and connector side). Driver seat control unit Harness connector B200 Harness connector B37 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. TERMINAL RESISTANCE REFERENCE Driver seat control unit harness connector Resistance (ohms) Connector No. Terminal No. B202 3 19 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-382180-S16381607912011011400000) ". Is the inspection result normal? YES (Present error): Replace the driver seat control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-382180-S37817770242011011400000) ". 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 AV 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 AV control unit. Check the resistance between the AV control unit harness connector terminals. Models with base audio TERMINAL RESISTANCE REFERENCE AV control unit harness connector Resistance (ohms) Connector No. Terminal No. M46 86 87 Approx. 54 - 66 Models with BOSE audio system with NAVI TERMINAL RESISTANCE REFERENCE AV control unit harness connector Resistance (ohms) Connector No. Terminal No. M165 96 97 Approx. 54 - 66 Models with BOSE audio system without NAVI TERMINAL RESISTANCE REFERENCE AV control unit harness connector Resistance (ohms) Connector No. Terminal No. M166 86 87 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. Models with base audio: " «AV CONTROL UNIT : DIAGNOSIS PROCEDURE»(ref-382170-S20560844812011011400000) " Models with BOSE audio system with NAVI: " «AV CONTROL UNIT : DIAGNOSIS PROCEDURE»(ref-382170-S26847976962011011400000) " Models with BOSE audio system without NAVI: " «AV CONTROL UNIT : DIAGNOSIS PROCEDURE»(ref-382170-S35448568602011011400000) " Is the inspection result normal? YES (Present error): Replace the AV control unit. Refer to the following. Models with base audio: " «REMOVAL AND INSTALLATION»(ref-382170-S30895727632011011400000) " Models with BOSE audio system with NAVI: " «REMOVAL AND INSTALLATION»(ref-382170-S04814434422011011400000) " Models with BOSE audio system without NAVI: " «REMOVAL AND INSTALLATION»(ref-382170-S15557407572011011400000) " 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 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. TERMINAL RESISTANCE REFERENCE BCM harness connector Resistance (ohms) Connector No. Terminal No. M18 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-382181-S10924053762011011400000) ". Is the inspection result normal? YES (Present error): Replace the BCM. Refer to " «REMOVAL AND INSTALLATION»(ref-382181-S23530132732011011400000) ". 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. TERMINAL RESISTANCE REFERENCE Data link connector Resistance (ohms) Connector No. Terminal No. M22 6 14 Approx. 54 - 66 Is the measurement value within the specification? YES (Present error): Check the following items again. Decision of CAN system type. Not received CONSULT-III data [SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR ("ECU list" included)]. Procedure for detecting root cause. 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 A/C auto amp. 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 A/C auto amp. Check the resistance between the A/C auto amp. harness connector terminals. TERMINAL RESISTANCE REFERENCE A/C auto amp. harness connector Resistance (ohms) Connector No. Terminal No. M50 41 40 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3 . NO: Repair the A/C auto amp. branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the A/C auto amp. Refer to " «A/C AUTO AMP POWER AND GROUND DIAGNOSIS PROCEDURE»(ref-382175-S05553963712011011400000) ". Is the inspection result normal? YES (Present error): Replace the A/C auto amp. Refer to " «REMOVAL AND INSTALLATION»(ref-382177-S16859333692011011400000) ". YES (Past error): Error was detected in the A/C auto amp. 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 Intelligent Key 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 Intelligent Key unit. Check the resistance between the Intelligent Key unit harness connector terminals. TERMINAL RESISTANCE REFERENCE Intelligent Key unit harness connector Resistance (ohms) Connector No. Terminal No. M70 2 3 Approx. 54 - 66 s the measurement value within the specification? YES: GO TO 3 . NO: Repair the Intelligent Key unit branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the Intelligent Key unit. Refer to " «INTELLIGENT KEY UNIT : DIAGNOSIS PROCEDURE»(ref-382182-S40713716062011011400000) ". Is the inspection result normal? YES (Present error): Replace the Intelligent Key unit. Refer to " «REMOVAL AND INSTALLATION»(ref-382183-S16755632602011011400000) ". YES (Past error): Error was detected in the Intelligent Key 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 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. TERMINAL RESISTANCE REFERENCE Combination meter harness connector Resistance (ohms) Connector No. Terminal No. M24 11 12 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-382184-S05838375112011011400000) ". Is the inspection result normal? YES (Present error): Replace the combination meter. Refer to " «REMOVAL AND INSTALLATION»(ref-382184-S22083316782011011400000) ". 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. TERMINAL RESISTANCE REFERENCE Steering angle sensor harness connector Resistance (ohms) Connector No. Terminal No. M17 4 5 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 - BRAKE CONTROL SYSTEM»(ref-382168-S37131574532011011400000) ". Is the inspection result normal? YES (Present error): Replace the steering angle sensor. Refer to " «REMOVAL AND INSTALLATION»(ref-382168-S35431643282011011400000) ". YES (Past error): Error was detected in the steering angle sensor 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 transfer 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 transfer control unit. Check the resistance between the transfer control unit harness connector terminals. TERMINAL RESISTANCE REFERENCE Transfer control unit harness connector Resistance (ohms) Connector No. Terminal No. E142 7 8 Approx. 54 - 66 Is the measurement value within the specification? YES: GO TO 3 . NO: Repair the transfer control unit branch line.
  3. CHECK POWER SUPPLY AND GROUND CIRCUIT Check the power supply and the ground circuit of the transfer control unit. Refer to " «DIAGNOSIS PROCEDURE»(ref-382185-S18496470942011011400000) ". Is the inspection result normal? YES (Present error): Replace the transfer control unit. Refer to " «REMOVAL AND INSTALLATION»(ref-382185-S13897074142011011400000) ". YES (Past error): Error was detected in the transfer 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 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. TERMINAL RESISTANCE REFERENCE ABS actuator and electric unit (control unit) harness connector Resistance (ohms) Connector No. Terminal No. E125 11 15 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-382168-S28234745742011011400000) ". Is the inspection result normal? YES (Present error): Replace the ABS actuator and electric unit (control unit). Refer to " «REMOVAL AND INSTALLATION»(ref-382168-S28825831182011011400000) ". 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 terminals and connectors of the IPDM E/R 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 IPDM E/R. Check the resistance between the IPDM E/R harness connector terminals. TERMINAL RESISTANCE REFERENCE IPDM E/R harness connector Resistance (ohms) Connector No. Terminal No. E122 39 40 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-382186-S37351599052011011400000) ". Is the inspection result normal? YES (Present error): Replace the IPDM E/R. Refer to " «REMOVAL AND INSTALLATION OF IPDM E/R»(ref-382186-S33939176552011011400000) ". YES (Past error): Error was detected in the IPDM E/R branch line. NO: Repair the power supply and the ground circuit.

Scheme 19

Scheme 19: Diagnosis Procedure
Scheme 19: Diagnosis Procedure
  1. CONNECTOR INSPECTION Turn the ignition switch OFF. Disconnect the battery cable from the negative terminal. Disconnect all the unit connectors on CAN communication system. 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. TERMINAL CONTINUITY REFERENCE Data link connector Continuity Connector No. Terminal No. M22 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. TERMINAL CONTINUITY REFERENCE Data link connector Ground Continuity Connector No. Terminal No. M22 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. TERMINAL RESISTANCE REFERENCE ECM Resistance (ohms) Terminal No. 94 86 Approx. 108 - 132 Check the resistance between the IPDM E/R terminals. TERMINAL RESISTANCE REFERENCE IPDM E/R Resistance (ohms) Terminal No. 39 40 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 system. 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.

More articles — Lan System