Mustang V8-4.6L (2009)
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Ignition OFF.
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Disconnect: Negative Battery Cable.
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Measure the resistance between RCM C2041a-16, circuit 1203 (BK/LB), harness side and a sheet metal ground near the RCM.
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Is the resistance less than 5 ohms?
Yes
CONNECT the negative battery cable. GO to G5.
No
REPAIR the circuit. CONNECT the negative battery cable. REACTIVATE the SRS. REFER to Air Bag Systems. CLEAR the DTCs. REPEAT the
network test with the scan tool.
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G5 CHECK THE ISO 9141 CIRCUIT FOR A SHORT TO VOLTAGE
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Ignition ON.
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Measure the voltage between the DLC C251-7, circuit 70 (LB/WH), harness side and ground.
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Is any voltage present?
Yes
REPAIR the circuit. REACTIVATE the SRS. REFER to Air Bag Systems. CLEAR the DTCs. REPEAT the network test with the scan tool.
No
GO to G6.
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G6 CHECK THE ISO 9141 CIRCUIT FOR A SHORT TO GROUND
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Ignition OFF.
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Measure the resistance between the DLC C251-7, circuit 70 (LB/WH), harness side and ground.
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Is the resistance greater than 10,000 ohms?