[54D] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Except for Hong Kong spec.> - - INPUT SIGNAL PROCEDURES - INSPECTION PROCEDURE P-2: The ignition switch (IG1) signal is not received.PRINT PAGE / INDEX / PRIOR / NEXT
INSPECTION PROCEDURE P-2: The ignition switch (IG1) signal is not received.
 CAUTION
 Whenever the ECU is replaced, ensure that the input signal circuit is normal.
COMMENTS ON TROUBLE SYMPTOM
Input signal from the ignition switch (IG1) is used to operate the functions below. If the signal is abnormal, these functions will not work normally.
  • Ignition key reminder buzzer function <Vehicles for GCC only>
  • Lamp reminder function
  • Power window timer function
  • Sunroof timer function
  • Ignition key cylinder illumination lamp
  • Seat belt warning lamp <Vehicles for Australia only>
  • Headlamp automatic shutdown function
  • Turn-signal lamp
  • Room lamps
POSSIBLE CAUSES
  • Malfunction of the ETACS-ECU
  • Damaged harness wires and connectors
DIAGNOSIS PROCEDURE
Step 1. Connector check: C-217 ETACS-ECU connector
Q: Is the check result normal?
YES:  Go to Step 2.
NO:  Repair the defective connector.
Step 2. Measure the voltage at the C-217 ETACS-ECU connector.
  1. Remove the ETACS-ECU, and measure at the junction block side.
  1. Voltage between C-217 ETACS-ECU connector terminal No.8 and body earth
    2. OK: Battery positive voltage
Q: Is the check result normal?
YES:  Go to Step 4.
NO:  Go to Step 3.
Step 3. Check the wiring harness between C-217 ETACS-ECU connector terminal No.8 and the ignition switch (IG1).
NOTE: Prior to the wiring harness inspection, check junction block connector C-203, and repair if necessary.
  • Check the power supply line for open circuit.
Q: Is the check result normal?
YES:  The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
NO:  Repair the wiring harness.
Step 4. Retest the system.
Check that the ignition switch (IG1) signal is received normally.
Q: Is the check result normal?
YES:  The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
NO:  Replace the ETACS-ECU.
[54D] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Except for Hong Kong spec.> - - INPUT SIGNAL PROCEDURES - INSPECTION PROCEDURE P-2: The ignition switch (IG1) signal is not received.PRINT PAGE / INDEX / PRIOR / NEXT
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