DTC U0151: SRS-ECU CAN timeout Mitsubishi Lancer Evolution X

DTC U0151: SRS-ECU CAN timeout

If no signal from SRS-ECU can be received, KOS-ECU sets the diagnostic trouble code No. U0151.

1. The CAN bus line may be defective
2. The SRS-ECU may be defective
3. Malfunction of KOS-ECU

Required Special Tools

1. MB991958: Scan Tool (M.U.T.-III Sub Assembly) MB991824: Vehicles Communication Interface (V.C.I.) MB991827: M.U.T.-III USB Cable MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)

1. STEP 1. Using scan tool MB991958, diagnose the CAN bus line CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958. Connect scan tool MB991958. Refer to " «HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)»(/mitsubishi/lancer-evolution/x-2007-2016/remont/door-locks-anti-theft-systems/#keyless-operation-system-kos-except-lancer-evolution__how-to-connect-the-scan-tool) ." Turn the ignition switch to the "ON" position. Diagnose the CAN bus line. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the CAN bus line found to be normal? YES: Go to Step 2. NO: Repair the CAN bus line. (Refer to «DIAGNOSIS»(/mitsubishi/lancer-evolution/x-2007-2016/remont/communication-devices/#controller-area-network-can-except-lancer-evolution__diagnosis) ).
2. STEP 2. Using scan tool MB991958, read the SRS-ECU diagnostic trouble code Check again if the DTC is set to the SRS-ECU. Q: Is the DTC set? YES: Troubleshoot the SRS (Refer to «TROUBLESHOOTING»(/mitsubishi/lancer-evolution/x-2007-2016/remont/airbag/#supplemental-restraint-system-srs-except-lancer-evolution) ). NO: Go to Step 3.
3. STEP 3. Using scan tool MB991958, read the other system diagnostic trouble code. Check if DTC U0151 is set to the combination meter. Q: Is the DTC set? YES: Go to Step 4. NO: Go to Step 5 .
4. STEP 4. Recheck for diagnostic trouble code. Check again if the DTC is set to the KOS-ECU. Erase the DTC. Turn the ignition switch from "LOCK" (OFF) position to "ON" position. Check if DTC is set. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES: Replace the SRS-ECU. NO: The trouble can be an intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).
5. STEP 5. Recheck for diagnostic trouble code. Check again if the DTC is set to the KOS-ECU. Erase the DTC. Turn the ignition switch from "LOCK" (OFF) position to "ON" position. Check if DTC is set. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES: Replace KOS-ECU and register the ID codes. (Refer to «ID CODES REGISTRATION JUDGMENT TABLE»(/mitsubishi/lancer-evolution/x-2007-2016/remont/door-locks-anti-theft-systems/#keyless-operation-system-kos-except-lancer-evolution__id-codes-registration-judgment-table) .) NO: The trouble can be an intermittent malfunction (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTION»(/mitsubishi/lancer-evolution/x-2007-2016/remont/hoistjack/#general-information-except-lancer-evolution__how-to-cope-with-intermittent-malfunctions) ).