TEST
ACTION
APPLICABILITY
3
Replace IPM Front Blower Fuse.
Turn the ignition on.
Press the A/C Heater Control’s power switch on.
Operate the blower in all speeds and modes.
Does the blower motor operate properly without blowing the fuse?
All
Yes
→ Refer to the wiring diagrams located in the service information to
help isolate a possible intermittent short to ground condition.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
4
Turn the ignition off.
Disconnect the Blower Motor Resistor Block C1 harness connector.
Measure the resistance between ground and the Fused Front Blower Motor Relay
Output circuit.
Is the resistance below 10K ohms?
All
Yes
→ Repair the Fused Front Blower Motor Relay Output circuit for a
short to ground. Replace IPM Front Blower Fuse.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 5
5
Turn the ignition off.
Disconnect the Blower Motor Resistor Block C1 harness connector.
Disconnect the Blower Motor Resistor Block C2 harness connector.
Measure the resistance between Blower Motor Resistor Block pin C2-1 and pins C2-2,
C1-2, C1-3, C1-5, and C1-6.
Is there continuity between pin C2-1 and any other pin?
All
Yes
→ Replace the Blower Motor Resistor Block in accordance with the
Service Information. Replace IPM Front Blower Fuse.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 6
6
Turn the ignition off.
Disconnect the Blower Motor Resistor Block C1 harness connector.
Disconnect the Blower Motor Resistor Block C2 harness connector.
Measure the resistance between Blower Motor Resistor Block pin C1-4 and pins C2-2,
C1-2, C1-3, C1-5, and C1-6.
Is there continuity between pin C1-4 and any other pin?
All
Yes
→ Replace the Blower Motor Resistor Block in accordance with the
Service Information. Replace IPM Front Blower Fuse.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Blower Motor in accordance with the Service Infor-
mation. Replace IPM Front Blower Fuse.
Perform BODY VERIFICATION TEST - VER 1.
633
HEATING & A/C
*BLOWER MOTOR INOPERATIVE - MTC —
Continued