Ranger 2WD V6-4.0L (2010)
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Ignition OFF.
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Disconnect: Negative Battery Cable.
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Measure the resistance between the RCM case and a good sheet metal ground near the RCM.
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Is the resistance less than 25 ohms?
Yes
GO to C4.
No
REPAIR the RCM case ground as necessary. CONNECT the negative battery cable. REACTIVATE the SRS. REFER to Restraint Systems. CLEAR the
DTCs. REPEAT the network test with the scan tool.
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C4 CHECK THE HS-CAN CIRCUITS BETWEEN THE RCM AND THE DLC FOR AN OPEN
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Measure the resistance between the RCM C2041a-10, circuit VDB04 (WH/BU), harness side and the Data Link Connector (DLC) C251-6, circuit
VDB04 (WH/BU), harness side.
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Measure the resistance between the RCM C2041a-9, circuit VDB05 (WH), harness side and the DLC C251-14, circuit VDB05 (WH), harness
side.
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Are the resistances less than 5 ohms?
Yes
CONNECT the negative battery cable. GO to C5.
No
REPAIR the circuit in question. CONNECT the negative battery cable. REACTIVATE the SRS. REFER to Restraint Systems. CLEAR the DTCs.
REPEAT the network test with the scan tool.
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C5 CHECK FOR CORRECT RCM OPERATION
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Disconnect all the RCM connectors.
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Check for:
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corrosion
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damaged pins
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pushed-out pins
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Connect all the RCM connectors and make sure they seat correctly.
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Operate the system and verify the concern is still present.
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Is the concern still present?
Yes
