1. Disconnect the ground terminal from battery sensor. NOTE 2. Remove the heater control assembly. (1) Release the clips and claws, then detach the control module cover.
(2) Release the screws and clips, then detach the heater control assembly. CAUTION: • Insert a flat tip screwdriver wrapped with a protection tape into the position (a) shown in the figure, and move it in the arrow direction to remove the clip. When both clips are removed, pull out the heater control assembly by hand inserted through the space. • Be careful not to damage the clips and the control panel.
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Control panel
InspectionDtc p1492 coil 1 egr "a" control circuit low
NOTE:For the diagnostic procedure, refer to DTC P1498. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P1498 COIL 4 EGR "A" CONTROL CIRCUIT LOW1. OUTLINE OF DIAGNOSISDetects open or short circuit of EGR.Judge as NG when the ECM output level differs from the actual terminal level.2. CO ...