2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2604
Component Testing
Note: Depending on the application, the relay coil resistance will be within one of the following ranges.
1. Test for one of the following resistance specifications between terminals 85 and 86 of the KR75 powertrain relay:
* 70-110 ohm
* 200-250 ohm
瀚慖f not within the specified range, replace the KR75 powertrain relay.
2. Test for the infinite resistance between the following terminals of the KR75 powertrain relay:
* 30 and 86
* 30 and 87
* 30 and 85
* 85 and 87
瀚慖f not the specified value, replace the KR75 powertrain relay.
3. 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 ohm between terminals 30 and 87.
瀚慖f greater than the specified range, replace the KR75 powertrain 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
P0690
DTC P0685 or P0690
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 P0685
- Engine Controls Ignition Relay Control Circuit
DTC P0690
- Engine Controls Relay Feedback Circuit High Voltage
Diagnostic Fault Information
Typical Scan Tool Data
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Tuesday, February 25, 2020
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2604
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