P1610

CIRCUIT DESCRIPTION

This diagnostic test checks for the loss of or invalid Platform Zone Module (PZM) serial data to the PCM. When such a condition exists for 11 seconds DTC P1610 is set.

CONDITIONS FOR SETTING THE DTC

Test Condition

DTC P0322 is not set.

Failure Conditions

^ Ignition switch ON for 5 seconds and PCM not receiving PZM data.
OR
^ PCM unable to communicate with the PZM for at least 11 seconds.

ACTION TAKEN WHEN THE DTC SETS

^ The Malfunction Indicator Lamp (MIL) will not illuminate.
^ No message will be displayed.

CONDITIONS FOR CLEARING THE DTC

^ A History DTC will clear after forty consecutive warm-up cycles with no failures of any non-emission related diagnostic test.
^ A Last Test Failed (current) DTC will clear when the diagnostic runs and does not fail.
^ PCM battery voltage is interrupted.
^ Using a Scan tool.