F 550 2WD Super Duty V10-6.8L (2009)
PINPOINT TEST E: THE RCM DOES NOT RESPOND TO THE SCAN TOOL
WARNING: Never probe the electrical connectors on safety belt buckle/retractor pretensioners or adaptive load limiting retractors. Failure to
follow this instruction may result in the accidental deployment of the safety belt pretensioners or adaptive load limiting retractors, which
increases the risk of serious personal injury or death.
WARNING: Never probe the electrical connectors on air bag, Safety Canopy(R) or side air curtain modules. Failure to follow this instruction
may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.
NOTE: Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the Pinpoint
Test. See: Initial Inspection and Diagnostic Overview/Communications Network/Inspection and Verification
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings.
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E1 CHECK THE RCM CONNECTION
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Ignition OFF.
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Depower the SRS. Refer to Air Bag Systems.
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Disconnect: RCM C310a.
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Are RCM C2041a pins 11, 12, and 16 OK?
Yes
GO to E2.
No
REPAIR the RCM connector pins as necessary. REPOWER the SRS. REFER to Air Bag Systems. CLEAR the DTCs. REPEAT the network test with
the scan tool.
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E2 CHECK THE RCM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
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Repower the SRS.
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Ignition ON.
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Measure the voltage between the RCM C310a-24, circuit CBP32 (GN/VT) harness side and ground.
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Is the voltage greater than 10 volts?
Yes
GO to E3.
No
VERIFY the Smart Junction Box (SJB) fuse 32 (10A) is OK. If OK, REPAIR the circuit in question. If not OK, REFER to the Wiring Diagrams to
identify the possible causes of the circuit short. REFER to Air Bag Systems. CLEAR the DTCs. REPEAT the network test with the scan tool.
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E3 CHECK THE RCM CASE GROUND FOR AN OPEN
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Ignition OFF.
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Disconnect: Negative Battery Cable.
