Tuesday, August 6, 2019

2019 Cadillac Truck Escalade AWD V8-6.2L Diagnostic Instructions Page 389


Component Testing



1. Ignition OFF, disconnect the Run/Crank relay.



2. Test for 70-150 ohms between terminals 85 and 86.



锟斤拷 If the resistance is not within the specified range, replace the relay.



3. Test for infinite resistance between the following terminals:



* 30 and 86



* 30 and 87



* 30 and 85



* 85 and 87



锟斤拷 If less than specified, replace the relay.



4. Install a 3-amp fused jumper wire between relay terminal 85 and 12 volts. Install a jumper wire between relay terminal 86 and ground.



Measure for less than 5 ohms between terminals 30 and 87.



锟斤拷 If greater than specified, replace the relay.



Repair Instructions



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



Refer to Control Module References (See: Testing and Inspection/Programming and Relearning) for BCM replacement, setup, and programming



B1433



DTC B1433



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 Descriptor



DTC B1433 00



- Ignition Switched Power Relay 2 Circuit



Diagnostic Fault Information



Circuit/System Description



The body control module (BCM) supplies voltage to the HVAC module and the windshield washer solvent heater (RPO XA7). Voltage is applied



when any of the following conditions are true:



* Ignition Switch is in ACC or RUN.



* The vehicle was remote started.



* The vehicle is in retained accessory power (RAP) mode.



Conditions for Running the DTC



* The system voltage is between 9-16 V.



* The DTC can only set when the output is actively being requested by the module.



Conditions for Setting the DTC

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