Flex AWD V6-3.5L (2009)
Normal Operation
The Restraints Control Module (RCM) communicates with the scan tool through the High Speed Controller Area Network (HS-CAN). Circuits VDB04
(WH/BU) (HS-CAN +) and VDB05 (WH) (HS-CAN -) provide the network connection to the RCM. Voltage for the RCM is provided by circuit CBP32
(GN/VT) and the RCM is case grounded.
This pinpoint test is intended to diagnose the following:
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Fuse
-
Wiring, terminals or connectors
-
Case ground open
-
RCM
PINPOINT TEST D: 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. Refer to Battery.
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D1 CHECK THE RCM CONNECTION
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Ignition OFF.
-
Depower the SRS. Refer to Air Bag Systems.
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Disconnect: RCM C310a.
-
Disconnect: RCM C310b.
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Inspect the RCM connectors for damaged, pushed out or corroded pins.
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Are RCM C310a pin 24, and RCM C310b pins 17 and 18 OK?
Yes
GO to D2.
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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D2 CHECK THE RCM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
-
Repower the SRS. Refer to Air Bag Systems.
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Ignition ON.
-
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?
