Checking Cables
Check the cable between engine control module (ECM) #A22 (#A22) and mass air flow (MAF) sensor #5 for a short-circuit to supply voltage according to SHORT-CIRCUIT TO SUPPLY VOLTAGE. PERMANENT FAULTS .
Check the ground lead between #A58 (#A58) and mass air flow (MAF) sensor #3 for an open-circuit according to OPEN-CIRCUIT, PERMANENT FAULTS
Remedy as necessary
Other information:
- Connecting the breakout box/accessing the control module, see CONNECTING THE BREAKOUT BOX .
- To access/replace the Mass Air Flow (MAF) sensor, see MASS AIR FLOW (MAF) SENSOR, REPLACING .
- With the ignition on and the mass air flow (MAF) sensor connector connected the voltage at mass air flow (MAF) sensor #2 should be approximately Ubatt , mass air flow (MAF) sensor #3 should be ground and mass air flow (MAF) sensor #5 should be approximately 1 V.
- For 5 cylinder turbocharged engines -2004, see SIGNAL DESCRIPTION
- For 5 cylinder turbocharged engines 2005-, see SIGNAL SPECIFICATION .
- For 6 cylinder engines -2004, see SIGNAL SPECIFICATION
- For 6 cylinder engines 2005-, see SIGNAL SPECIFICATION .
- Continue
Refer to VERIFICATION