Pinpoint Test E: DTC P065B
WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Make sure battery voltage is greater than 12.2 volts prior to carrying out this pinpoint test.
NOTE:
Do not have a battery charger attached during vehicle testing.
- E1 CHECK THE BATTERY CONDITION
- Carry out the Battery - Condition Test to determine if the battery can hold a charge and is OK for use. Refer to BATTERY, MOUNTING AND CABLES .
- Does the battery pass the condition test?
- Yes : GO to E2.
- No : INSTALL a new battery. REFER to BATTERY, MOUNTING AND CABLES . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
- E2 CHECK THE PCM GENERATOR MONITOR FREQUENCY (GENMON_HZ) PID
- Start the engine.
-
NOTE: Many of the PCM PIDs selected will be monitored later in this pinpoint test.
Select and monitor the following PCM PIDs:
- Generator Voltage Desired (GENVDSD).
- Generator Monitor Frequency (GENMON_HZ).
- Is the GENMON_HZ PID below 80 Hz or above 200 Hz?
- Yes : GO to E3.
- No : The fault is not present at this time. This may indicate an intermittent fault. CARRY OUT a wiggle test on the charging system circuits to try and recreate the concern. CHECK generator connections for corrosion, loose connections and/or bent terminals. REPAIR as necessary. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
- E3 CHECK THE PCM GENERATOR MONITOR FREQUENCY (GENMON_HZ) PID WITH GENERATOR C102A DISCONNECTED
- Ignition OFF.
- Disconnect: Generator C102A.
- Start the engine.
- Monitor the GENMON_HZ PID.
- Does the GENMON_HZ PID read between 0-2 Hz?
- Yes : GO to E5.
- No : GO to E4.
- E4 CHECK GENERATOR CIRCUITRY
- Ignition OFF.
-
NOTE: Care must be taken when back probing the connector to prevent damage to the weather pack insulator.
With the PCM connected, connect a fused jumper wire between PCM C175B-14, circuit CDC15 (VT) and ground by carefully back probing the PCM.
- Start the engine.
- Monitor the GENMON_HZ PID.
- Does the GENMON_HZ PID read 0 Hz?
- Yes : INSPECT the harness for wire-to-wire shorts or insulation chaffing, incorrectly pinned connectors and correct wire colors and REPAIR generator circuit CDC15 (VT) as needed. CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
- No : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS - GASOLINE ENGINES . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
- E5 MONITOR THE PCM PID GENERATOR MONITOR FREQUENCY (GENMON_HZ) WHILE ACTIVATING THE GENERATOR VOLTAGE DESIRED (GENVDSD) PID
- Ignition OFF.
- Connect a fused jumper wire between generator C102A-1, circuit CDC15 (VT), harness side and generator C102A-2, circuit CDC10 (BU/OG), harness side.
- Start and idle the engine.
- With the engine at idle, set the output state control GENVDSD PID to 14 volts.
- Monitor the GENMON_HZ PID.
- Does the GENMON_HZ PID read between 120-130 Hz?
- Yes : INSTALL a new generator. REFER to GENERATOR - GASOLINE ENGINES . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.
- No : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS - GASOLINE ENGINES . CLEAR the DTCs. REPEAT the self-test. TEST the system for normal operation.