P1607

DTC P1607: Malfunction in ECM Internal Circuit

NOTE: Information marked with an asterisk (*) applies to '04 model.

1. Reset the ECM.

2. Turn the ignition switch ON (II), and wait for 40 seconds.

Is DTC P1607 (P0607)* indicated?

YES - Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck. If the symptom/indication goes away with a known-good ECM, replace the original ECM.

NO - Intermittent failure, system is OK at this time. A low battery can cause this problem. Ask the customer if there has been any recent trouble starting the engine.