Thursday, June 10, 2021

2010 Cadillac Truck SRX AWD V6-3.0L Page 1610

2010 Cadillac Truck SRX AWD V6-3.0L Page 1610



Relay Test



1. Ignition OFF, disconnect the starter relay.



2. Test for 60-180 Ohms between terminals 85 and 86.



瀚慖f 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



瀚慖f not the specified value, replace the relay.



4. Install a 20 A fused jumper wire between relay terminal 85 and 12 V. Install a jumper wire between relay terminal 86 and ground. Test for



less than 2 Ohms between terminals 30 and 87.



瀚慖f greater than specified range, replace the relay.



Repair Instructions



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



* Relay Replacement (Attached to Wire Harness) (See: Power and Ground Distribution/Power Distribution Relay/Service and Repair/Relay



Replacement (Attached to Wire Harness))Relay Replacement (Within an Electrical Center) (See: Power and Ground Distribution/Power



Distribution Relay/Service and Repair/Relay Replacement (Within an Electrical Center))



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



P0616



DTC P0615, P0616, or P0617



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 P0615



- Starter Relay Control Circuit



DTC P0616



- Starter Relay Control Circuit Low Voltage



DTC P0617



- Starter relay Control Circuit High Voltage



Diagnostic Fault Information



Circuit/System Description



When the ignition switch is placed in the START position, a discrete signal is supplied to the body control module (BCM) notifying it that the



ignition is in the START position. The BCM then sends a message to the engine control module (ECM) that crank has been requested. The ECM



then verifies that the clutch pedal is depressed or the transmission is in Park/Neutral. If it is, the ECM then supplies 12 V to the control circuit of the



starter relay. When this occurs, battery voltage is supplied through the switch of the starter relay to the starter solenoid.

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