STEP 1. Check the compressor operation.
STEP 2. Using scan tool (M.U.T.-IIISE), check actuator test.
(1) caution | To prevent damage to scan tool (M.U.T.-IIISE), always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool (M.U.T.-IIISE). |
Connect scan tool (M.U.T.-IIISE). Refer to "How to connect the Scan Tool (M.U.T.-IIISE)
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."
(2) Carry out the actuator test (Refer to
).Item No.4: Driver's side air mixing damper
Is the check result normal?
Go to Step 4
.
Go to Step 3
.
STEP 3. Check of open circuit in IG1, DA, DA', DB and DB' line between air mixing damper control motor <Single-zone AUTO A/C> or air mixing damper control motor (Driver's side) <Dual-zone AUTO A/C> connector and A/C controller assembly (A/C-ECU) connector.
STEP 4. Check the operation of the air mixing damper <Single-zone AUTO A/C> or the air mixing damper (Driver's side) <Dual-zone AUTO A/C>.
(1) Remove the air mixing damper control motor <Single-zone AUTO A/C> or the air mixing damper control motor (Driver's side) <Dual-zone AUTO A/C>.
(2) Insert an hexagonal wrench to the axis of the air mixing damper <Single-zone AUTO A/C> or the air mixing damper (Driver's side) <Dual-zone AUTO A/C> and turn it by hand to check whether the air mixing damper <Single-zone AUTO A/C> or the air mixing damper (Driver's side) <Dual-zone AUTO A/C> works normally.OK: The air mixing damper <Single-zone AUTO A/C> or the air mixing damper (Driver's side) <Dual-zone AUTO A/C> turns smoothly without tight spots within the range of approximately 80 degrees.
Is the check result normal?
Go to Step 5
.
Replace the upper case assembly.
STEP 5. Check whether the DTC is set again.
STEP 6. Check whether the DTC is set again.
Is the DTC set?
Replace the A/C controller assembly (A/C-ECU).
This procedure is complete.