MODULE COMMUNICATION ERROR INSPECTION (R.H.D) [MULTIPLEX COMMUNICATION SYSTEM]

id0902e6038200

System Diagram

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Diagnostic Procedure

Step	Inspection	Action
1	VERIFY MALFUNCTIONING PART DISPLAYED ON M-MDS •  Is “Fail” displayed on every unit?	Yes	Go to the next step.
		No	Go to Step 6.
2	INSPECT DLC-2 CONNECTOR •  Is the DLC-2 connector normal?	Yes	Go to the next step.
		No	Repair or replace the DLC-2 connector, then go to the next step.
3	INSPECT WIRING HARNESS M •  Inspect wiring harness K (CAN_L, CAN_H) for an open or short circuit (to ground and power supply system). •  Is the wiring harness normal?	Yes	Go to the next step.
		No	Repair or replace wiring harness K, then go to the next step.
4	INSPECT PCM •  Disconnect the PCM connector. •  Measure the resistance between the following PCM connector terminal: ―  Between terminal 1AE and terminal 1AI (part side) (except MZ-CD 1.6 (Y6)) ―  Between terminal 301 and terminal 309 (part side) (MZ-CD 1.6 (Y6)) •  Is the resistance 118—130 ohms?	Yes	Go to the next step.
		No	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [ZJ, ZY].) (See PCM REMOVAL/INSTALLATION [MZ-CD 1.4 DI Turbo].) (See PCM REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6)].)
5	INSPECT INSTRUMENT CLUSTER •  Disconnect the instrument cluster connector. •  Measure the resistance between the following instrument cluster connector terminal: ―  Between terminal 2B and terminal 2D (part side) •  Is the resistance 118—130 ohms?	Yes	Go to the next step.
		No	Replace the instrument cluster, then go to the next step. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.) (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION [MZ-CD 1.4 DI Turbo, MZ-CD 1.6 (Y6)].)
6	INSPECT WIRING HARNESS CONDITION OF EACH UNIT •  Determine the malfunctioning part referring to the table for determination. (See Determination.) •  Is the wiring harness normal?	Yes	Replace the malfunctioning unit, then perform the network test again.
		No	Repair or replace the wiring harness, then perform the network test again.

Determination