Checking the Wiring

Checking The Wiring







- Ignition off.
- The breakout box connected.

Check the communication cable CAN H between transmission control module (TCM) terminal #27 and engine control module (ECM) terminal #27. Check for an open-circuit according to Checking wiring and terminals. Permanent faults (TCM-DF18). Check for a short-circuit to ground according to Checking wiring and terminals. Permanent faults (TCM-DF14). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent faults (TCM-DF13).

Check the communication cable CAN L between transmission control module (TCM) terminal #26 and engine control module (ECM) terminal #57. Check for an open-circuit according to Checking wiring and terminals. Permanent faults (TCM-DF18). Check for a short-circuit to ground according to Checking wiring and terminals. Permanent faults (TCM-DF14). Check for a short-circuit to supply voltage according to Checking wiring and terminals. Permanent faults (TCM-DF16).

Remedy as necessary.

Other information:
- To connect the breakout box to the transmission control module (TCM) and engine control module (ECM), see Connecting the breakout box.
- For information about transmission control signals, see Signal description. Transmission control module (TCM).
- For information about engine control module (ECM) (naturally aspirated engines) signals, see Connector A Terminal A# 1-90.
- For information about engine control module (ECM) (turbocharged engines) signals, see Signal specification.

Continue with Next Procedure. Refer to Fault-Tracing Information - Interrupted Fault.