F-CAN Circuit Troubleshooting - PGM-FI System
  1. Measure the resistance between ECM connector terminals A3 and A4.
Is there about 2.34−2.86 kΩ?
YES -
Update the ECM if it does not have the latest software, or substitute a known-good ECM, then recheck. If the symptom/indication goes away with a known-good ECM, replace the original ECM. ■
NO -
Substitute a known-good gear shift control module. If the HDS identify the vehicle, replace the original gear shift control module. ■
  1. Disconnect these connectors:
    • Gauge control module (tach) 36P connector.
    • VSA modulator-control unit 46P connector.
    • Yaw rate-lateral acceleration senor 4P connector.
    • EPS control unit connector D (28P).
    • SRS unit connector A (28P).
    • Engine compartment wire harness 10P connector (with i-SHIFT system); LHD model, RHD model.
    • Gear shift control module 12P connector.