Disabling Idle time shutdown
Cargo Master
Joined: Aug 2012
Posts: 2,844
Likes: 925
From: Kaufman TX
See page 111 of the Ford body builders layout book for how Mobile PTO mode is enabled. Your upfitter should have done this but apparently didn't.
https://madocumentupload.marketingas...da090&v5=False
The source for other books like this is on https://www.fordbbas.com/publications Lots of cool information.
The short of it is:
Which circuit is PTO 2? This is pin 11 of the PTO connector behind the passenger side kick panel. You can see the diagram on page 116 of the linked book.
https://madocumentupload.marketingas...da090&v5=False
The source for other books like this is on https://www.fordbbas.com/publications Lots of cool information.
The short of it is:
Mobile Mode Typical Engagement Sequence
1. 12V applied to PTO 2 circuit.
2. PCM looks for the following enabling conditions:
. 1. Transmission Oil Temp above 20° F.
. 2. 6.7L: Engine Coolant Temp (ECT) 20° F minimum.
. 3. 6.2L / 7.3L: Engine Coolant Temperature (ECT) 20° F minimum. (See subsequent page for complete list of Enable / Disable conditions.)
1. PCM looks for voltage on PTO RPM circuit.
2. Command is sent to boost transmission hydraulic -line pressure to a minimum of 200 psi, which is used by the aftermarket PTO supplier to hold their PTO clutch.
3. The PTO RLY circuit changes from open-circuit to ground. If the upfitter uses the circuit wiring offered in this document then this will provide battery voltage to the aftermarket PTO solenoid to engage the PTO.
4. Engine idle increases to 750 RPM.
1. 12V applied to PTO 2 circuit.
2. PCM looks for the following enabling conditions:
. 1. Transmission Oil Temp above 20° F.
. 2. 6.7L: Engine Coolant Temp (ECT) 20° F minimum.
. 3. 6.2L / 7.3L: Engine Coolant Temperature (ECT) 20° F minimum. (See subsequent page for complete list of Enable / Disable conditions.)
1. PCM looks for voltage on PTO RPM circuit.
2. Command is sent to boost transmission hydraulic -line pressure to a minimum of 200 psi, which is used by the aftermarket PTO supplier to hold their PTO clutch.
3. The PTO RLY circuit changes from open-circuit to ground. If the upfitter uses the circuit wiring offered in this document then this will provide battery voltage to the aftermarket PTO solenoid to engage the PTO.
4. Engine idle increases to 750 RPM.
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