Engine Control System - SFI System

1GR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0607: Control Module Performance

DTC P0607 - Control Module Performance

MONITOR DESCRIPTION

The ECM continuously monitors its main and sub CPUs. This self-check ensures that the ECM functioning properly. If output 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 DTC
(a) Clear DTC.
(b) Turn the ignition switch OFF.
(c) Disconnect the battery negative terminal and wait for 1 minute.
(d) Connect the battery negative terminal.
(e) Turn the ignition switch ON.
(f) Check DTC.
OK:
P0607 is not present.
NG -- REPLACE ECM
OK -- CHECK FOR INTERMITTENT PROBLEMS