ECM Power & Ground Circuits
Proper power and ground supply to ECM is required to guarantee correct operation of ECM and self-diagnostic system. See ENGINE CONTROL MODULE (ECM) under COMPUTERIZED ENGINE CONTROLS in SYSTEM & COMPONENT TESTING article.
Proper power and ground supply to ECM is required to guarantee correct operation of ECM and self-diagnostic system. See ENGINE CONTROL MODULE (ECM) under COMPUTERIZED ENGINE CONTROLS in SYSTEM & COMPONENT TESTING article.