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.