Tuesday, April 30, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 493


* Left rear seat terminal 9 X4 and terminal 6 X2



* Right rear seat terminal 20 X4 and terminal 8 X2



锟斤拷 If less than the specified value, test for a short between the signal and low reference circuits. If the circuits test normal, replace the



appropriate seat cushion heater element/temperature sensor.



3. If all circuits test normal, replace the RHSM.



B2345 42 or B2345 4B



If either DTC is set, replace the RHSM.



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Rear Seat Cushion Heater Replacement ()



* Control Module References (See: Testing and Inspection/Programming and Relearning) for the RHSM replacement, setup, and programming



B2355



DTC B1825, B1850, B1860, B2355, B2365, or B2375



Diagnostic Instructions



* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System



Check - Vehicle) prior to using this diagnostic procedure.



* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an



overview of the diagnostic approach.



* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure



Instructions) provides an overview of each diagnostic category.



DTC Descriptors



DTC B1825 01



- Seat Recline Position Sensor Circuit Short to Battery



DTC B1825 06



- Seat Recline Position Sensor Circuit Short to Ground or Open



DTC B1825 5A



- Seat Recline Position Sensor Circuit Plausibility Failure



DTC B1850 01



- Left Seat Lumbar Horizontal Position Sensor Circuit Short to Battery



DTC B1850 06



- Left Seat Lumbar Horizontal Position Sensor Circuit Short to Ground or Open



DTC B1850 5A



- Left Seat Lumbar Horizontal Position Sensor Circuit Plausibility Failure



DTC B1860 01



- Left Seat Lumbar Vertical Position Sensor Circuit Short to Battery



DTC B1860 06



- Left Seat Lumbar Vertical Position Sensor Circuit Short to Ground or Open



DTC B1860 5A



- Left Seat Lumbar Vertical Position Sensor Circuit Plausibility Failure



DTC B2355 01



- Left Seat Front Vertical Position Sensor Circuit Short to Battery



DTC B2355 06



- Left Seat Front Vertical Position Sensor Circuit Short to Ground or Open



DTC B2355 5A



- Left Seat Front Vertical Position Sensor Circuit Plausibility Failure

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