TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the ATC C2 harness connector.
Measure the resistance between the Evaporator Temperature Sensor Signal circuit
and the Rear Blower Motor Control circuit.
Is the resistance below 10K ohms?
All
Yes
→ Repair the Evaporator Temperature Sensor Signal circuit for a
short to the Rear Blower Motor Control circuit.
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
4
Turn the ignition off.
Disconnect the ATC C2 harness connector.
Measure the resistance between the Evaporator Temperature Sensor Signal circuit
and the Sensor Ground circuit. The approximate circuit resistance should be:
5,900 ohms @ 38°C (100°F).
6,600 ohms @ 35°C (95°F).
7,400 ohms @ 32°C (90°F).
8,300 ohms @ 29°C (85°F).
9,400 ohms @ 27°C (80°F).
10,600 ohms @ 24°C (75°F).
11,900 ohms @ 21°C (70°F).
13,500 ohms @ 18°C (65°F).
15,300 ohms @ 16°C (60°F).
17,500 ohms @ 13°C (55°F).
19,900 ohms @ 10°C (50°F).
22,800 ohms @ 7°C (45°F).
26,100 ohms @ 4°C (40°F).
30,000 ohms @ 2°C (35°F).
34,600 ohms @ -1°C (30°F).
Is the resistance within the specifications?
All
Yes
→ Replace the ATC in accordance with the Service Information.
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 5
5
Turn the ignition off.
Disconnect the ATC C2 harness connector.
Disconnect the in-line C202 harness connector.
Measure the resistance of the Evaporator Temperature Sensor Signal circuit between
the ATC C2 harness connector and the in-line C202 harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 6
No
→ Repair the Evaporator Temperature Sensor Signal circuit be-
tween the ATC C2 harness connector and the in-line C202
harness connector (HVAC side) for an open.
With the DRBIII
t, reset the ATC after repair is complete.
Perform BODY VERIFICATION TEST - VER 1.
215
AUTOMATIC TEMPERATURE CONTROL
EVAP TEMP SENSOR OPEN (ACTIVE) —
Continued