2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 550
3. Check the voltage between ECM harness connector terminals under the following conditions.
Is the inspection result normal?
YES - GO TO 3.
NO - GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors F12, F3
- 20 A fuse (No. 77)
- IPDM E/R harness connector E8
- Harness for open or short between ECM and battery
- Repair or replace harness or connectors.
3.CHECK INTERMITTENT INCIDENT
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Trouble
Diagnosis For Intermittent Incident/Description.
Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace harness or connectors.
4.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Erase DTC.
3. Perform DTC Confirmation Procedure.
See See: P Code Charts/P0603.
Is the 1st trip DTC P0603 displayed again?
YES - GO TO 5.
NO - INSPECTION END
5.REPLACE ECM
1. Replace ECM.
2. Go to See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Programming and Relearning/Additional Service
When Replacing Control Unit/Special Repair Requirement.
- INSPECTION END
P0605
P0605 ECM
Description
The ECM consists of a microcomputer and connectors for signal input and output and for power supply. The ECM controls the engine.
