Chart 6 Rear Blower Speed Incorrect

CIRCUIT DESCRIPTION

Power from fuse is applied to blower and ground is supplied through the switch. The blower speed is controlled by varying the circuit amperage using a series of three resistors contained in a module. The heater and A/C programmer receives a feedback signal but has 110 effect on rear blower operation.

TEST DESCRIPTION

Numbers below refer to circled numbers on the diagnostic chart.

1. Checks for poor ground or poor feed circuit.
2. Checks if resistor module is faulty.
3. Defines a faulty circuit or faulty switch assembly.