DTC P2552: Throttle Actuator Control Module Relay Malfunction Turn the ignition switch ON (II). Clear the DTC with the HDS. Do the ETCS TEST in the INSPECTION MENU with the HDS. Is the RELAY circuit OK?
YES | - | Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the throttle actuator control module relay, the throttle actuator control module, and at the ECM/PCM.■
NO | - | Go to Step 4 .
Turn the ignition switch OFF. Jump the SCS line with the HDS. Remove the throttle actuator control module relay (A). Disconnect ECM/PCM connector D (17P). |