Mountaineer AWD V8-4.6L (2010)
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SJB
PINPOINT TEST I: ONE OR MORE STOPLAMPS ARE INOPERATIVE
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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I1 CHECK THE RECORDED DTCs FROM THE SJB SELF-TEST
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Check the recorded results from the SJB self-test.
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Is DTC C1788, B2048 or B2050 recorded?
Yes
For DTC C1788, GO to I2.
For DTC B2048 or DTC B2050, GO to I5.
No
GO to I7.
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I2 CHECK THE LH LED MODULE FOR A SHORT TO GROUND
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Disconnect: LH Rear Lamp C419.
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Ignition ON.
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Enter the following diagnostic mode on the scan tool: SJB Self-Test.
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Clear the DTCs and repeat the SJB on-demand self-test.
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Is DTC C1788 still present?
Yes
GO to I3.
No
INSTALL a new LED module. RUN the on-demand self-test (required to clear certain DTCs). CORRECT any unresolved DTCs. CLEAR all DTCs.
TEST the system for normal operation.
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I3 CHECK THE RH LED MODULE FOR A SHORT TO GROUND
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Disconnect: RH Rear Lamp C418.
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Enter the following diagnostic mode on the scan tool: SJB Self-Test.
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Clear the DTCs and repeat the SJB on-demand self-test.
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Is DTC C1788 still present?
Yes
GO to I4.
No
INSTALL a new LED module. RUN the on-demand self-test (required to clear certain DTCs). CORRECT any unresolved DTCs. CLEAR all DTCs.
TEST the system for normal operation.
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I4 CHECK THE SJB STOPLAMP OUTPUT CIRCUIT FOR A SHORT TO GROUND (MOUNTAINEER)
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Ignition OFF.
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Disconnect: SJB C2280a.
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Measure the resistance between the LH rear lamp C419-1, circuit CLS44 (VT/BN), harness side and ground.
