PINPOINT TEST Z: DTCs B0001:2B, B0002:2B, B0010:2B, B0011:2B, B0020:2B, B0021:2B, B0028:2B, B0029:2B, B0050:2B, B0052:2B, B00B5:2B, B1211:2B, B1212:2B, B1213:2B AND B1214:2B

WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Do not handle, move or change the original horizontal mounting position of the restraints control module (RCM) while the RCM is connected and the ignition switch is ON. Failure to follow this instruction may result in the accidental deployment of the Safety Canopy® and cause serious personal injury or death.

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 disassemble or tamper with safety belt buckle/retractor pretensioners or adaptive load limiting retractors or probe the electrical connectors. 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.

NOTE: Use the correct probe adapter(s) from the Flex Probe Kit when taking measurements. Failure to use the correct probe adapter(s) may damage the connector.
Most faults are due to connector and/or wiring concerns. Carry out a thorough inspection and verification before proceeding with the pinpoint test.

NOTE: SRS components should only be disconnected or reconnected when instructed to do so within a pinpoint test step. Failure to follow this instruction may result in incorrect diagnosis of the SRS .

NOTE: The Supplemental Restraint System (SRS) must be fully operational and free of faults before releasing the vehicle to the customer.

Z1 RETRIEVE RCM DTCs
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self Test - RCM .
- NOTE: Signal cross coupled DTCs will be retrieved only in pairs.
- Were any signal cross coupled DTCs retrieved on-demand during self-test?
- Yes: This fault cannot be cleared until it is corrected and the DTC is no longer retrieved during the on-demand self test. GO to Z2 .
- No: This is an intermittent fault when present as a Continuous Memory Diagnostic Trouble Code (CMDTC) only. GO to Z4.

Z2 CHECK THE AFFECTED DEPLOYABLE CIRCUITS FOR A SIGNAL CROSS COUPLED FAULT

Ignition OFF.
Depower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
Disconnect: RCM C2041A and C2041B.
Disconnect ALL of the affected SRS devices.
NOTE: Most signal cross coupled faults are due to connector and/or wiring harness damage. Carry out a thorough inspection of connector(s) and/or wiring harness for damage.

Using the following table, measure resistance between the circuits of the affected SRS devices.

SIGNAL CROSS COUPLED FAULT TABLE

Device/Loop (DTC)	Connector	Circuit
Driver air bag module stage 1 (B0001:2B)	Driver air bag module stage 1 electrical connector	RR101 (YE/GN) CR101 (VT/BN)
Driver air bag module stage 2 (B0002:2B)	Driver air bag module stage 2 electrical connector	RR102 (WH) CR102 (BU)
Passenger air bag module stage 1 (B0010:2B)	C256A-2 C256A-1	CR103 (GY/BU) RR103 (VT/GN)
Passenger air bag module stage 2 (B0011:2B)	C256B-2 C256B-1	CR104 (YE/GY) RR104 (WH/BU)
Driver seat side air bag module (B0020:2B)	C3252-1 C3252-3	CR105 (GN/BN) RR105 (GY/YE)
Driver Safety Canopy® module (B0021:2B)	C9006-1 C9006-3	CR109 (BN/BU) RR109 (BU/GN)
Passenger seat side air bag module (B0028:2B)	C3255-1 C3255-3	CR106 (VT/GY) RR106 (YE/OG)
Passenger Safety Canopy® module (B0029:2B)	C9007-1 C9007-3	CR111 (BN/WH) RR111 (YE/VT)
Driver safety belt buckle switch (B0050:2B)	C3065-1 -	CR201 (GN/BU) -
Passenger safety belt buckle switch (B0052:2B)	C3066-1 -	CR203 (GY/VT) -
Driver seat track position sensor (B00B5:2B)	C356-2 -	VR215 (YE/VT) -

CONNECTOR SPECIFICATION

Device/Loop (DTC)	Connector	Circuit
Driver safety belt retractor (B1211:2B)	C323-2 C323-1	CR146 (GY/VT) RR146 (BU/BN)
Driver safety belt buckle pretensioner (B1212:2B)	C3201- 1 C3201- 2	CR120 (BU/OG) RR120 (BU/GN)
Passenger safety belt buckle pretensioner (B1213:2B)	C3202- 1 C3202- 2	CR122 (WH/OG) RR122 (BN)

Are the resistances greater than 10,000 ohms between the affected circuits?

Yes: GO to Z3 .
No: REPAIR the affected circuits. GO to Z5.

Z3 CONFIRM THE RCM FAULT
NOTE: Make sure all restraint system components, sensor electrical connectors and the RCM electrical connectors are connected before carrying out the self-test. If not, DTCs will be recorded.
- Prior to reconnecting any previously disconnected SRS component:
  - inspect connector(s) (including any in-line connectors) for pushed-out, loose or spread terminals and loose or frayed wire connections at terminals.
  - inspect wire harness for any damage, pinched, cut or pierced wires.
  - inspect C2041A and C2041B Connector Position Assurance (CPA) lever/lock for correct operation. Refer to RESTRAINTS CONTROL MODULE (RCM) .
  - repair any concerns found.
    Refer to appropriate SYSTEM WIRING DIAGRAMS article, Connector Repair Procedures for schematic and connector information.
- Connect: All Previously Disconnected Restraint System Component(s).
- Connect: RCM C2041A and C2041B.
- Repower the SRS . Do not prove out the SRS at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Enter the following diagnostic mode on the scan tool: Self Test - RCM .
- Were any signal cross coupled DTCs retrieved on-demand during self-test?
- Yes: INSTALL a new RCM . REFER to RESTRAINTS CONTROL MODULE (RCM) . GO to Z5.
- No: In the process of diagnosing the fault, the fault condition has become intermittent. Do not install any new SRS components at this time. SRS components should only be installed when directed to do so in the pinpoint test. GO to Z4 .
Z4 CHECK FOR AN INTERMITTENT FAULT
NOTE: Most cross link faults are due to connector and/or wiring harness damage. Carry out a thorough inspection of connector (s) and/or wiring harness for damage.
- Ignition OFF.
- Depower the SRS . Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Disconnect ALL of the affected SRS devices.
- Inspect the wiring harness(es) for any type of damage. Repair as necessary.
  Refer to appropriate SYSTEM WIRING DIAGRAMS article, Supplemental Restraint System for schematic and connector information.
- Repower the SRS . Do not prove out the SRS at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Enter the following diagnostic mode on the scan tool: Self Test - RCM .
- Were any signal cross coupled DTCs retrieved on-demand during self-test?
- Yes: The fault condition is now present. This fault cannot be cleared until it is corrected and the DTC is no longer retrieved on-demand during the self-test. GO to Z2.
- No: The fault is not present and cannot be recreated at this time.
  CHECK for causes of the intermittent fault. ATTEMPT to recreate the hard fault by flexing the wire harness and cycling the ignition frequently. Do not install any new SRS components at this time. SRS components should only be installed when directed to do so in the pinpoint test. GO to Z5 .
Z5 CHECK FOR ADDITIONAL SRS DTCs
- Ignition OFF.
- Reconnect all SRS components (if previously disconnected).
- If previously directed to depower the SRS , repower the SRS . Do not prove out the SRS at this time. Refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING .
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self Test - Restraints.
- Are any RCM and/or OCSM DTCs retrieved on-demand during self-test?
- Yes: Do not clear any DTCs until all DTCs have been resolved. GO to the DTC CHARTS for pinpoint test direction.
- No: CLEAR all RCM and OCSM DTCs. PROVE OUT the SRS . Repair is complete. RETURN the vehicle to the customer.