Pinpoint Test D: DTCs B1167, B1168, B1175, B1178, B116B, B116D, B116C And B116E
Power Running Board (PRB)
Pinpoint Tests
Pinpoint Test D: DTCs B1167, B1168, B1175, B1178, B116B, B116D, B116C and B116E
Refer to Wiring Diagram Set 109, Power Liftgate/Power Running Boards for schematic and connector information. Diagrams By Number
Normal Operation
During Power Running Board (PRB) deployment, the PRB module supplies power to the PRB motor through circuit CPR41 (BU/WH) (LH) or CPR44 (BN/WH) (RH) and ground through circuit CPR42 (WH) (LH) or CPR45 (VT/GY) (RH). The PRB module stows the PRB by supplying power to the PRB motor through circuit CPR42 (WH) (LH) or CPR45 (VT/GY) (RH) and ground through circuit CPR41 (BU/WH) (LH) or CPR44 (BN/WH) (RH). The PRB module provides a regulated 10-volt power supply to the Hall-effect sensor (internal to the PRB motor) through circuit CPR47 (GY/BN). The Hall-effect ground is provided by the PRB module through circuit RPR47 (BU/GN). The PRB module monitors the PRB Hall-effect signal through circuit VPR43 (GY/BU) (LH) or VPR46 (GY) (RH). If the PRB module does not receive any signal from the Hall-effect sensor during operation, the PRB will stop.
B116B-B1178:
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- LH or RH PRB motor assembly
- PRB module
PINPOINT TEST D: DTCs B1167, B1168, B1175, B1178, B116B, B116D, B116C and B116E
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D1 CHECK FOR A SHORT TO VOLTAGE IN THE HALL-EFFECT SENSOR SIGNAL, DEPLOY OR STOW CIRCUIT
- Ignition OFF.
- Disconnect: PRB Module C3313A.
- Disconnect: PRB Module C3313B.
- Ignition ON.
- For DTC B1167, B1168, B116B or B116D, measure the voltage between LH PRB motor C3185-5, circuit VPR43 (GY), harness side and ground; and between LH PRB motor C3185-3, circuit CPR41 (BU/WH), harness side and ground; and between C3185-1, circuit CPR42 (WH), harness side and ground.
- For DTC B1175, B1178, B116C or B116E, measure the voltage between RH PRB motor C3186-5, circuit VPR46 (GY/OG), harness side and ground; and between RH PRB motor C3186-3, circuit CPR44 (BN/WH), harness side and ground; and between C3186-1, circuit CPR45 (VT/GY), harness side and ground.
- Is any voltage present?
Yes
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
No
GO to D2.
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D2 CHECK FOR A SHORT TO GROUND IN THE HALL-EFFECT SENSOR SIGNAL, DEPLOY OR STOW CIRCUIT
- Ignition OFF.
- For DTC B1167, B1168, B116B or B116D, measure the resistance between LH PRB motor C3185-5, circuit VPR43 (GY/BU), harness side and ground; and between LH PRB motor C3185-3, circuit CPR41 (BU/WH), harness side and ground; and between C3185-1, circuit CPR42 (WH), harness side and ground.
- For DTC B1175, B1178, B116C or B116E, measure the resistance between RH PRB motor C3186-5, circuit VPR46 (GY), harness side and ground; and between RH PRB motor C3186-3, circuit CPR44 (BN/WH), harness side and ground; and between C3186-1, circuit CPR45 (VT/GY), harness side and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to D3.
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
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D3 CHECK FOR AN OPEN IN THE HALL-EFFECT SENSOR SIGNAL, DEPLOY OR STOW CIRCUIT
- Ignition OFF.
- For DTC B1167, B1168, B116B or B116D, measure the resistances between PRB module C4322A or C4322B, harness side and LH PRB motor C3185, harness side using the following chart:
- For DTC B1175, B1178, B116C or B116E, measure the resistances between PRB module C4322A or C4322B, harness side and RH PRB motor C3186, harness side using the following chart:
- Is the resistance less than 5 ohms?
Yes
GO to D4.
No
REPAIR the circuit(s). CLEAR the DTCs. REPEAT the self-test.
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D4 CHECK FOR A SHORT BETWEEN THE STOW AND DEPLOY CIRCUITS
- For DTC B1167, B1168, B116B or B116D, measure the resistance between LH PRB motor C3185-3, circuit CPR41 (BU/WH), harness side and C3185-1, circuit CPR42 (WH), harness side.
- For DTC B1175, B1178, B116C or B116E, measure the resistance between RH PRB motor C3186-3, circuit CPR44 (BN/WH), harness side and C3186-1, circuit CPR45 (VT/GY), harness side.
- Is the resistance greater than 10,000 ohms?
Yes
GO to D5.
No
REPAIR the circuit. CLEAR the DTCs. REPEAT the self-test.
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D5 CHECK THE PRB MOTOR FOR AN OPEN CIRCUIT
- For DTC B1167, B1168, B116B or B116D, measure the resistance between LH PRB motor C3185-3, circuit CPR41 (BU/WH), component side and C3185-1, circuit CPR42 (WH), component side.
- For DTC B1175, B1178, B116C or B116E, measure the resistance between RH PRB motor C3186-3, circuit CPR44 (BN/WH), component side and C3186-1, circuit CPR45 (VT/GY), component side.
- Is any measurable continuity present?
Yes
GO to D6.
No
INSTALL a new PRB motor. REFER to Power Running Board (PRB) Motor Service and Repair. CLEAR the DTCs. REPEAT the self-test.
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D6 CHECK THE PRB MOTOR FOR A SHORT TO GROUND
- For DTC B1167, B1168, B116B or B116D, measure the resistance between LH PRB motor C3185-1, circuit CPR 42 (WH), component side and ground.
- For DTC B1175, B1178, B116C or B116E, measure the resistance between RH motor C3186-1, circuit CPR45 (VT/GY), component side and ground.
- Is the resistance greater than 10,000 ohms?
Yes
GO to D7.
No
INSTALL a new PRB motor. REFER to Power Running Board (PRB) Motor Service and Repair. CLEAR the DTCs. REPEAT the self-test.
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D7 CHECK THE PRB MODULE FOR CORRECT OPERATION
- Connect: PRB LH Motor C3185.
- Connect: PRB RH Motor C3186.
- Visually inspect all PRB module connectors.
- Check for:
- corrosion.
- pushed-out pins.
- Connect all PRB module connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes
INSTALL a new PRB module. REFER to Power Running Board (PRB) Module Service and Repair. CLEAR the DTCs. REPEAT the self-test.
No
The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
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