(l) Enter the following menus: Powertrain / Engine / Trouble Codes.
(m)Read the DTCs.
Result
B -- REPLACE ECM See: Powertrain Management/Computers and Control Systems/Engine Control Module/Service and
Repair/Removal
A -- CHECK FOR INTERMITTENT PROBLEMS
From 08/2009
2GR-FE ENGINE CONTROL: SFI SYSTEM: P1607: Cruise Control Input Processor
P1607 - Cruise Control Input Processor
DESCRIPTION
The ECM 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 standard, the ECM will illuminate the MIL and set a DTC immediately.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
CONFIRMATION DRIVING PATTERN
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