G: NO OPERATION IN HI BLOWER SETTING

PINPOINT TEST G: NO OPERATION IN HI BLOWER SETTING

G1 CHECK BLOWER MOTOR OPERATION

- Turn ignition switch ON Function Selector Switch to FLOOR and blower knob to first position from HI.

- Does blower motor operate?

- Yes
Go to G2.

- No
Go to G4.

G2 CHECK BLOWER SPEED

- Turn blower knob to HI

- Does blower motor operate on HI?

- Yes
Cycle blower switch from HI to LO several times. If blower operates each time, advise owner of system operation. If blower does not operate in HI each time, replace blower switch.

- No
Go to G3.

G3 CHECK BLOWER SWITCH






- Check continuity of blower motor switch.

- Is switch continuous in all positions?

- Yes
Service Circuit 57 (BK) between switch and ground. Service as necessary.

- No
Replace blower motor switch.

G4 CHECK BLOWER SPEEDS

- With ignition switch in RUN and Function Selector knob at FLOOR, rotate blower knob to LO and then one position toward HI.

- Does blower operate in both positions?

- Yes
Inspect harness connector at blower switch. Replace harness connector if damaged. If OK, replace blower switch.

- No
Go to G5.

G5 CHECK LO BLOWER MOTOR SPEED

- Reference blower motor speeds in Step 4.

- Does blower motor operate in LO?

- Yes
Go to G6.

- No
Replace blower motor resistor assembly.

G6 CHECK BLOWER SWITCH CONNECTOR

- Check to make sure connector is correctly and securely connected to blower switch.

- Is connector properly attached to blower switch?

- Yes
Replace blower switch.

- No
Reconnect and check blower motor operation.