[54B] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Hong Kong spec.> - - INPUT SIGNAL PROCEDURES - INSPECTION PROCEDURE P-15: The vehicle speed signal is not received. | PRINT PAGE / INDEX / PRIOR / NEXT

INSPECTION PROCEDURE P-15: The vehicle speed signal is not received.
| CAUTION Whenever the ECU is replaced, ensure that the input signal circuit is normal.
| COMMENTS ON TROUBLE SYMPTOM The vehicle speed signal is used to operate the functions below. If the signal is abnormal, these functions will not work normally. Door-ajar warning function Windshield wiper and washer (vehicle speed-dependent wiper function) Electric folding mirrors (automatic unfolding function)
| POSSIBLE CAUSES Malfunction of the engine-A/T-ECU Malfunction of the ETACS-ECU Damaged harness wires and connectors
| DIAGNOSIS PROCEDURE
| Step 1. Use the MUT-II/III to confirm a diagnosis code. Check if an A/T system diagnosis code is set. Q: Is the check result normal? YES: Go to Step 2. NO: Diagnose the automatic transmission control system. Refer to <2000> or <2400>.
| Step 2. Connector check: C-110 <2000> or C-136 <2400> engine-A/T-ECU connector and C-219 ETACS-ECU connector Q: Is the check result normal? YES: Go to Step 3. NO: Repair the connector.
| Step 3. Check the wiring harness between C-110 engine-A/T-ECU connector terminal No.80 <2000> or C-136 engine-A/T-ECU connector twerminal No.79 <2400> and C-219 ETACS-ECU connector terminal No.63. NOTE: Prior to the wiring harness inspection, check joint connector C-02 and intermediate connector C-105, and repair if necessary. Check the input line for open circuit. Q: Is the check result normal? YES: Go to Step 4. NO: Repair the wiring harness.
| Step 4. Check the speedometer. Check that the speedometer works normally. Q: Is the check result normal? YES: Go to Step 5. NO: Replace the engine-A/T-ECU.
| Step 5. Retest the system. Check that the vehicle speed 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.

[54B] SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR <Hong Kong spec.> - - INPUT SIGNAL PROCEDURES - INSPECTION PROCEDURE P-15: The vehicle speed signal is not received. | PRINT PAGE / INDEX / PRIOR / NEXT

©2004 Mitsubishi Motors Corporation