Description

DATA TROUBLE CODE: 16

SYSTEM: A/T Control Signal Malfunction

CIRCUIT DESCRIPTION
- The signal from the A/T central processing unit retards the ignition timing of the engine during A/T gear shifting, thus momentarily reducing torque output of the engine for smooth clutch operation inside the transmission and reduced shift shock.

DIAGNOSTIC TROUBLE CODE DETECTING CONDITION
- Fault in communications between the engine central processing unit and A/T central processing unit inside of the the ECM**.

** If the ECM records the diagnostic trouble code "16" in memory, it prohibits the torque control of the A/T which performs smooth gear shifting.

TROUBLE AREA
^ ECM