Battery Disconnect Precautions
CAUTION:
Disconnect negative battery terminal. Before reconnecting battery, turn ignition switch to OFF position. After reconnecting battery, re-code and check operation of anti-theft radio.
CAUTION:
Before disconnecting negative battery terminal, turn ignition switch to OFF position and obtain anti-theft radio security code.
After reconnecting vehicle battery, re-code and check operation of anti-theft radio. Also check operation of clock. Fully close power windows to window stop, then activate all power window switches ("up") for at least a second to activate automatic window raising/lowering. power windows.
If connector is disconnected from ECM or the battery is disconnected, all adaptation values in control module are erased. DTC memory content will remain intact however. If engine is started after this, a rough, uneven idle can result. In this case, engine must be allowed to run at idle for a few minutes or a longer road test must be performed until adaptation procedure has been completed.
NOTE:
On models with theft protection system, obtain radio security code from vehicle owner before disconnecting battery cable.
NOTE:
Vehicles with On Board Diagnostics (OBD) II must have readiness code for Electronic Control Module (ECM) re-generated after battery has been disconnected. See appropriate SELF-DIAGNOSTICS article in ENGINE PERFORMANCE.