Ranger 4WD V6-4.0L (2009)
Refer to wiring Diagram Set 46, Supplemental Restraint System for schematic and connector information. See: Diagrams/Electrical Diagrams/Diagrams
By Number
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 CBP08
(GY/YE), and the RCM is case grounded.
This pinpoint test is intended to diagnose the following:
-
Fuse
-
Wiring, terminals or connectors
-
Case ground open
-
RCM
PINPOINT TEST C: THE RCM DOES NOT RESPOND TO THE SCAN TOOL
WARNING: Remove restraint system diagnostic tools from the vehicle prior to road testing. If tools are not removed, the supplemental
restraint system (SRS) device may not deploy in a crash. Failure to follow this instruction may result in serious personal injury or death in a
crash and possibly violate vehicle safety standards.
WARNING: Never probe the electrical connectors on air bag, safety canopy 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.
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.
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the
connector.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.
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C1 CHECK THE RCM PINS FOR DAMAGE
-
Ignition OFF.
-
Depower the Supplemental Restraint System (SRS). Refer to Air Bag Systems.
-
Disconnect: RCM C2041a and C2041b.
-
Inspect the RCM C2041a, harness side and the RCM C2041a, component side, pins 17 and 18 for damage.
-
Are the RCM connector pins 17 and 18 OK?
Yes
GO to C2.
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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C2 CHECK THE RCM VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
-
Deactivate the SRS. Refer to Air Bag Systems.
-
Repower the SRS. Refer to Air Bag Systems.
-
Ignition ON.
-
Measure the voltage between the RCM C2041b-24, circuit CBP08 (GY/YE), harness side and ground.
