Turn Signal on Chime
When a turn signal is turned on the instrument cluster detects voltage on either CKT 14 (LT BLU) (LH turn) or CKT 15 (DK BLU (RH turn) and switches CKT 1845 (LT URN) to ground. When the MALL module detects a ground condition on CKT 1845 (LT URN) the module begins to monitor vehicle distance, via the VSS input CKT 817 (DK URN/WHT). When the MALL module determines that the vehicle has traveled 1.2 km (0.75 miles), the turn signal on chime sounds four times.