[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
54 -CHASSIS ELECTRICAL > 54A-CHASSIS ELECTRICAL > ETACS > INPUT SIGNAL PROCEDURES > THE ASC SWITCH SIGNAL IS NOT RECEIVED
Inspection Procedure 14: The ASC OFF switch signal is not received.
 
 
caution
  • Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.
 
 
COMMENTS ON TROUBLE SYMPTOM
If there is an error to the ASC OFF switch input signal, the ASC OFF switch signal is no longer output to the communication line.
 
 
PROBABLE CAUSES
  • Malfunction of the ASC OFF switch
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors
 
 
DIAGNOSIS PROCEDURE
STEP 1. Check the ASC OFF switch.
Refer to GROUP 35C - ASC OFF switch .
Is the check result normal?
Go to Step 2.
Replace the ASC OFF switch.
 
STEP 2. Resistance measurement at ASC OFF switch connector (earth terminal)
(1) Disconnect the connector, and measure at the wiring harness side.
(2) Measure the resistance between the ASC OFF switch connector (earth terminal) and body earth.
OK: Continuity exists (2 Ω or less)
Is the check result normal?
Go to Step 4.
Go to Step 3.
 
STEP 3. Check of open circuit in earth line between ASC OFF switch connector and body earth
Is the check result normal?
Intermittent malfunction is suspected (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to Cope with Intermittent Malfunction ).
Repair the connector(s) or wiring harness.
 
STEP 4. Check of short to power supply, short to earth, and open circuit in ASCS line between ETACS-ECU connector and ASC OFF switch connector
Is the check result normal?
Go to Step 5.
Repair the connector(s) or wiring harness.
 
STEP 5. M.U.T.-IIISE data list
Check the input signals from the ASC OFF switch.
  • Operate the ASC OFF switch.
 
Item No.Item nameNormal condition
104A.S.C./TCL OFF switchOFF to ON (only when switch is operated)
OK: Normal condition is displayed.
Is the check result normal?
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).
Replace the ETACS-ECU.