FUEL INJECTION SYSTEM7-45Communication error with the FI diagnostic toolD63 Malfunction code reinstate-ment (for fault code No. 24only)• No malfunction code 00 —• Malfunction code exists 24: Fault code number To reinstate, set the enginestop switch to “ ” “ ”.D70 Control number 00–254 —LCD display Symptom Probable cause of malfunctionWaiting for con-nection....No signals are receivedfrom the ECU.• Connecting lead is not connected properly.• Main switch is in the “ ” position.• Malfunction in wire harness ECU coupler.• Malfunction in FI diagnostic tool coupler.• Open or short circuit in wire harness.• Malfunction in FI diagnostic tool.• Malfunction in ECUERROR_4Commands from the FIdiagnostic tool are notaccepted by the ECU.• Vehicle battery is insufficiently charged.• Malfunction in wire harness ECU coupler.• Malfunction in FI diagnostic tool coupler.• Open or short circuit in wire harness.• Malfunction in FI diagnostic tool.• Malfunction in ECUDiag-nosticcodeNo.Item FI diagnostic tool dis-play/Actuation Procedure