Daytime Running Lamp Module

CIRCUIT OPERATION
On vehicles built for sale in Canada, the low-beam headlamps operate, at reduced intensity, when the ignition switch is in the RUN position and the vehicle is moving.

When the ignition switch is in the RUN position, circuit A1 connects to circuit A38. The A38 circuit connects from the ignition switch to the fuse block and provides power to fuse 11, a 10 Amp.

Circuit F20 connects from the fuse to the DRL module. This provides the ignition RUN input.

Circuit A13 provides a constant battery feed to the Daytime Running Lamp (DRL) module. The A13 circuit is protected by a fusible link located near the auxiliary jumper post on the left toe box.

Circuit G7 provides the vehicle speed input to the DRL module. This circuit is spliced and connects to the Vehicle Speed Sensor (VSS).

The G34 circuit is used as an output from the module to the high beam indicator lamp. This is used to indicate to the operator that the DRL is in operation.

Circuit L44 is used as an input to the DRL module to indicate when the operator has turned ON the low beam headlamps. This input will turn OFF the DRL module.

The L3 circuit is used as an input to the DRL module indicating when the operator has turned ON the high beam headlamps.

Ground for the DRL module is supplied on circuit Z1.