Signal Too High - Intermittent Fault

ECM-6800 TURBOCHARGER (TC) CONTROL VALVE
SIGNAL TOO HIGH - INTERMITTENT FAULT

Checking component and wiring



Check cables between engine control module (ECM) # A38 (# A38) and turbocharger (TC) control valve # 2 for an intermittent short-circuit to supply voltage according to [1][2]Checking Wiring and Terminals. Intermittent Faults

Remedy as necessary.

Other information:
- To connect the breakout box Connecting the Breakout Box (ECM)
- To access/replace the turbocharger (TC) control valve, Turbocharger (TC) Control Valve, Replacing
- Turbocharger (TC) control valve # 1 has Ubat power supply from the system relay.
- For information about signals, see Diagnostic Parameters and Pinout Values. Signal Description, ME7, B5XX4T


Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.