DETERMINING SHORT TO POWER SUPPLY LOCATION (HS-CAN) [MULTIPLEX COMMUNICATION SYSTEM (R.H.D. (MZR-CD 2.2, MZR 2.0 DISI i-stop))]

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Caution

•  Perform the following malfunction diagnosis only when it is diagnosed with a short to power supply by CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [MULTIPLEX COMMUNICATION SYSTEM (R.H.D. (MZR-CD 2.2, MZR 2.0 DISI i-stop))].

System wiring diagram

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Determination procedure

Caution

•  When disconnecting the connector, verify that there is no looseness, damage, deformation, corrosion, or poor connection of the connector terminals.

•  When inspecting the DLC-2, touch it with a paper clip or similar thin pin without directly inserting a tester into the terminals.

•  Disconnect the negative battery cable before performing any work that requires handling of connectors.

Step	Inspection		Action
1	INSPECT FOR SHORT TO POWER SUPPLY BETWEEN BCM AND INSTRUMENT CLUSTER •  Disconnect the negative battery cable. •  Disconnect the BCM connector 1. •  Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) •  Switch the ignition ON. •  Measure the voltage at DLC-2 terminals E and F. •  Is the voltage between 1.5 - 3.5 V?	Yes	Go to Step 16.
		No	Go to the next step.
2	INSPECT BCM FOR SHORT TO POWER SUPPLY •  Switch the ignition off. •  Disconnect the negative battery cable. •  Disconnect the BCM connector 2. •  Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) •  Switch the ignition ON. •  Measure the voltage at DLC-2 terminals E and F. •  Is the voltage between 1.5 - 3.5 V?	Yes	Replace the BCM because there is a short to the power supply in the BCM. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION [R.H.D.].)
		No	Go to the next step.
3	INSPECT CAN LINE BETWEEN CONNECTOR C-17 AND INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY •  Disconnect the negative battery cable. •  Disconnect connector C-17. •  Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) •  Switch the ignition ON. •  Measure the voltage at DLC-2 terminals E and F. •  Is the voltage between 1.5 - 3.5 V?	Yes	Go to the next step.
		No	Go to Step 7.
4	INSPECT CAN LINE BETWEEN REAR VEHICLE MONITORING CONTROL MODULE (RH) AND CONNECTOR C-17 FOR SHORT TO POWER SUPPLY •  Switch the ignition ON. •  Measure the voltage at rear vehicle monitoring control module (RH) terminals L and I. •  Is the voltage between 1.5 - 3.5 V?	Yes	Repair or replace the wiring harness between the BCM and connector C-17 because the wiring harness is shorted to the power supply.
		No	Go to the next step.
5	INSPECT CAN LINE BETWEEN REAR VEHICLE MONITORING CONTROL MODULE (RH) AND CONNECTOR C-24 FOR SHORT TO POWER SUPPLY •  Disconnect the negative battery cable. •  Disconnect connector C-24. •  Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) •  Switch the ignition ON. •  Measure the voltage at rear vehicle monitoring control module (RH) terminals L and I. •  Is the voltage between 1.5 - 3.5 V?	Yes	Repair or replace the wiring harness between connector C-17 and connector C-24 because the wiring harness is shorted to the power supply.
		No	Go to the next step.
6	INSPECT REAR VEHICLE MONITORING CONTROL MODULE (RH) FOR SHORT TO POWER SUPPLY •  Disconnect the negative battery cable. •  Disconnect the rear vehicle monitoring control module (RH) connector. •  Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) •  Switch the ignition ON. •  Measure the voltage at rear vehicle monitoring control module (RH) terminals L and I. •  Is the voltage between 1.5 - 3.5 V?	Yes	Replace the rear vehicle monitoring control module (RH) because the rear vehicle monitoring control module (RH) is shorted to the power supply. (See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)
		No	Repair or replace the wiring harness between the rear vehicle monitoring control module (RH) and connector C-24 because the wiring harness is shorted to the power supply.
7	INSPECT CAN LINE BETWEEN CONNECTOR C-43 AND INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY •  Disconnect the negative battery cable. •  Disconnect connector C-43. •  Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) •  Switch the ignition ON. •  Measure the voltage at DLC-2 terminals E and F. •  Is the voltage between 1.5 - 3.5 V?	Yes	Go to the next step.
		No	Go to Step 11.
8	INSPECT CAN LINE BETWEEN CONNECTOR C-43 AND AFS CONTROL MODULE FOR SHORT TO POWER SUPPLY •  Switch the ignition ON. •  Measure the voltage at AFS control module terminals B and A. •  Is the voltage between 1.5 - 3.5 V?	Yes	Go to Step 10.
		No	Go to the next step.
9	INSPECT AFS CONTROL MODULE FOR SHORT TO POWER SUPPLY •  Disconnect the negative battery cable. •  Disconnect the AFS control module connector. •  Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) •  Switch the ignition ON. •  Measure the voltage at AFS control module terminals B and A (wiring harness side). •  Is the voltage between 1.5 - 3.5 V?	Yes	Replace the AFS control module because there is a short to the power supply in the AFS control module. (See AFS (ADAPTIVE FRONT LIGHTING SYSTEM) CONTROL MODULE REMOVAL/INSTALLATION.)
		No	Repair or replace the wiring harness between connector C-43 and the AFS control module because the wiring harness is shorted to the power supply.
10	INSPECT SAS CONTROL MODULE FOR SHORT TO POWER SUPPLY •  Disconnect the negative battery cable. •  Connect the BCM connector 2. •  Connect connector C-17. •  Disconnect the SAS control module. •  Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) •  Switch the ignition ON. •  Measure the voltage at DLC-2 terminals E and F. •  Is the voltage between 1.5 - 3.5 V?	Yes	Replace the SAS control module because there is a short to the power supply in the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION.)
		No	Repair or replace the wiring harness between the SAS control module and connector C-17/C-50 because the wiring harness is shorted to the power supply.
11	INSPECT CAN LINE BETWEEN CONNECTOR C-47 AND DLC-2 FOR SHORT TO POWER SUPPLY •  Disconnect the negative battery cable. •  Disconnect connector C-47. •  Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) •  Switch the ignition ON. •  Measure the voltage at DLC-2 terminals E and F. •  Is the voltage between 1.5 - 3.5 V?	Yes	Go to the next step.
		No	Repair or replace the wiring harness between the DLC-2 and connector C-47 because the wiring harness is shorted to the power supply.
12	INSPECT CAN LINE BETWEEN CONNECTOR C-47 AND KEYLESS CONTROL MODULE FOR SHORT TO POWER SUPPLY •  Switch the ignition ON. •  Measure the voltage at keyless control module terminals 2K and 2L. •  Is the voltage between 1.5 - 3.5 V?	Yes	Go to Step 14.
		No	Go to the next step.
13	INSPECT KEYLESS CONTROL MODULE FOR SHORT TO POWER SUPPLY •  Disconnect the negative battery cable. •  Disconnect the keyless control module connector. •  Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) •  Switch the ignition ON. •  Measure the voltage at keyless control module terminals 2K and 2L (wiring harness side). •  Is the voltage between 1.5 - 3.5 V?	Yes	Replace the keyless control module because there is a short to the power supply in the keyless control module. (See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION.)
		No	Repair or replace the wiring harness between connector C-47 and the keyless control module because the wiring harness is shorted to the power supply.
14	INSPECT CAN LINE BETWEEN CONNECTOR C-43 AND INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY •  Switch the ignition ON. •  Measure the voltage at instrument cluster terminals 2B and 2D. •  Is the voltage between 1.5 - 3.5 V?	Yes	Repair or replace the wiring harness between connector C-43 and connector C-47 because the wiring harness is shorted to the power supply.
		No	Go to the next step.
15	INSPECT INSTRUMENT CLUSTER FOR SHORT TO POWER SUPPLY •  Disconnect the negative battery cable. •  Disconnect the instrument cluster connector. •  Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) •  Switch the ignition ON. •  Measure the voltage at instrument cluster terminals 2B and 2D (wiring harness side). •  Is the voltage between 1.5 - 3.5 V?	Yes	Replace the instrument cluster because the instrument cluster is shorted to the power supply. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
		No	Repair or replace the wiring harness between connector C-47 and the instrument cluster because the wiring harness is shorted to the power supply.
16	INSPECT CAN LINE BETWEEN CONNECTOR C-41 AND BCM FOR SHORT TO POWER SUPPLY •  Disconnect the negative battery cable. •  Connect the BCM connector 1. •  Disconnect connector C-41. •  Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) •  Switch the ignition ON. •  Measure the voltage at DLC-2 terminals E and F. •  Is the voltage between 1.5 - 3.5 V?	Yes	Go to the next step.
		No	Repair or replace the wiring harness between connector C-41 and the BCM because the wiring harness is shorted to the power supply.
17	INSPECT CAN LINE BETWEEN DSC HU/CM AND CONNECTOR C-41 FOR SHORT TO POWER SUPPLY •  Switch the ignition ON. •  Measure the voltage at DSC HU/CM terminals M and J. •  Is the voltage between 1.5 - 3.5 V?	Yes	Go to Step 19.
		No	Go to the next step.
18	INSPECT DSC HU/CM OR FOR SHORT TO POWER SUPPLY •  Disconnect the negative battery cable. •  Disconnect the DSC HU/CM connector. •  Connect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) •  Switch the ignition ON. •  Measure the voltage at DSC HU/CM terminals M and J (wiring harness side). •  Is the voltage between 1.5 - 3.5 V?	Yes	Replace the DSC HU/CM because the DSC HU/CM is shorted to the power supply. (See DSC HU/CM REMOVAL/INSTALLATION.)
		No	Repair or replace the wiring harness between the DSC HU/CM and connector C-41 because the wiring harness is shorted to the power supply.
19	INSPECT CAN-RELATED MODULES FOR SHORT TO POWER SUPPLY •  Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR-CD 2.2].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) Note •  Disconnect the negative battery cable before disconnecting the connectors, and connect the negative battery cable before measuring the terminal voltage. •  Connect connector C-41. •  Measure the voltage at the following terminals while removing the PCM and EHPAS control module one by one. •  Switch the ignition ON. ―  DLC-2 terminal F ―  DLC-2 terminal E •  Is the voltage between 1.5 - 3.5 V?	Yes	Replace the module in which the voltage is between 1.5-3.5 when the module is removed.
		No	Repair or replace the wiring harness between the PCM and EHPAS control module/connector C-02 because the wiring harness is shorted to the power supply.