Engine Control System - SFI System

3MZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0607: Control Module Performance

DTC P0607 - Control Module Performance

DESCRIPTION

The ECM (HV control ECU) continuously monitors its main and sub CPUs. This self-check ensures that the ECM is functioning properly. If outputs from the CPUs are different and deviate from the standards, the ECM will illuminate the MIL and set a DTC immediately.
The ECM also monitors the cruise control cancel circuit. If this circuit malfunctions, the ECM will set a DTC immediately (MIL is not illuminated).






MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS





INSPECTION PROCEDURE

PROCEDURE

1. CHECK WHETHER DTC OUTPUT RECURS (DTC P0607)
(a) Connect Techstream to the DLC3.
(b) Turn the ignition switch to the ON position and turn the tester on.
(c) Clear the DTCs DTC Check / Clear.
(d) Turn the ignition switch off and turn the tester off.
(e) Disconnect the battery negative terminal and wait for 1 minute.
(f) Connect the battery negative terminal.
(g) Turn the ignition switch to the ON position and turn the tester on.
(h) Select the following menu items: Powertrain / Engine and ECT / Trouble Code.
(i) Read the DTCs.
Result:






B -- CHECK FOR INTERMITTENT PROBLEMS
A -- REPLACE HV CONTROL ECU