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(a) Disconnect the A24 and D74 ECM connectors. (b) Turn the ignition switch to ON. (c) Measure the voltage according to the value(s) in the table below. Standard voltage: TESTER CONNECTION SWITCH CONDITION SPECIFIED CONDITION A24-28 (IGSW) - D74-81 (E1) Ignition switch ON 11 to 14 V NG GO TO STEP 5 OK REPLACE ECM 5. CHECK HARNESS AND CONNECTOR (RELAY BLOCK - ECM, IGNITION SWITCH, (a) Disconnect the A24 ECM connector. (b) Disconnect the J9 ignition switch connector. (c) Disconnect the cable from the battery positive (+) terminal. (d) Remove the AM2 fuse and integration relay. (e) Measure the resistance according to the value(s) in the table below. Standard resistance: TESTER CONNECTION CONDITION SPECIFIED CONDITION A24-28 (IGSW) - 1B-8 Always Below 1 Ω 1B-7 - Body ground Always Below 1 Ω Positive (+) battery cable - 1C-1 Always Below 1 Ω Positive (+) battery cable - AM2 fuse terminal 1 Always Below 1 Ω J9-5 (AM2) - AM2 fuse terminal 2 Always Below 1 Ω J9-6 (IG2) - 1B-6 Always Below 1 Ω A24-28 (IGSW) or 1B-8 - Body ground Always 10 kΩ or higher 3UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: ECM Power S... |