Open-Circuit

ECM-8000 +30-SUPPLY TO CONTROL MODULE
OPEN-CIRCUIT

Checking for intermittent fault



- Ignition on.
- Read system voltage.

Voltage should be approximately battery voltage.

Is the system voltage OK?
Yes - Testing Complete.
No - Continue below.


Checking wiring and components



Check cable between engine control module(ECM) terminal #B11 and the battery. Check for an open-circuit according to [1][2]Checking Wiring and Terminals. Permanent Fault

Other information
- To connect the breakout box, Connecting the Breakout Box (ECM)
- To access/replace the control module, Engine Control Module (ECM), Replacing
- To access/replace the mass air flow (MAF) sensor, Mass Air Flow (MAF) Sensor, Replacing
- For information about signals, Pinout Values and Diagnostic Parameters


Verification



Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Reconnect connectors, reinstall components
- Ignition on.
- Read system voltage.

Voltage should be approximately battery voltage.

Is the system voltage OK?
Yes - Testing Complete.
No - Continue below.


Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed. Exit fault tracing for this diagnostic trouble code (DTC) or make another attempt.