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M-ASTC DIAGNOSIS TSB Revision MITSUBISHI ACTIVE SKID AND TRACTION CONTROL SYSTEM 35C-53 . CIRCUIT OPERATION . M-ASTC DTC SET CONDITION . TROUBLESHOOTING HINTS • The 2WD/4WD detection switch is defective. • The center differential detection switch is defec- tive. • The 2WD detection switch is defective. • The 4LLc detection switch is defective. • The 4H detection switch is defective. • Damaged harness wires and connectors • The M-ASTC-ECU is defective. DIAGNOSIS Required Special Tools: • MB991223: Harness Set • MB991502: Scan Tool (MUT-II) STEP 1. Using scan tool MB991502, check the transfer CAUTION To prevent damage to the scan tool always turn the igni- 1. Connect scan tool MB991502 to the data link connector. 2. Turn the ignition switch to the "ON" position. Q: Does the transfer set any DTC? YES : Diagnose the transfer-ECU. Refer to NO : Go to Step 2. AC204395 CONNECTORS: C-05, C-06, C-10, C-11, C-12 C-05(BR) AD C-06(B) C-11(W) C-12(BR) C-10(B) AC204176 CONNECTORS: E-121, E-123 E-121 AO E-123(GR) ACX01539 16-pin MB991502 AI |