|
|
Content .. 2224 2225 2226 2227 ..
signal terminal 11 while pressing the black phone button. If not within the specified range, replace the inside rearview mirror. 4. Test for 2.7k-3.3k ohms between the keypad supply voltage terminal 12 and the keypad signal terminal 11 while pressing the blue On-Star® button. If not within the specified range, replace the inside rearview mirror. 5. Test for 11.7k-14.3k ohms between the keypad supply voltage terminal 12 and the keypad signal terminal 11 while pressing the red emergency button. If not within the specified range, replace the inside rearview mirror. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Inside Rearview Mirror Replacement Control Module References for CIM replacement, setup, and programming DTC B2483 OR B2484 Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptors DTC B2483 00 Global Positioning System (GPS) Antenna Malfunction Short to Ground DTC B2484 00 Global Positioning System (GPS) Antenna Malfunction Open Circuit Circuit/System Description The communication interface module (CIM) receives information from a specific navigation
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Conditions for Running the DTC Ignition is in the RUN or ACC position. Battery voltage is between 9-16 volts. Conditions for Setting the DTC B2483 00 The CIM detects a short to ground on the navigation antenna signal circuit. B2484 00 The CIM detects an open/high resistance on the navigation antenna signal circuit. Action Taken When the DTC Sets The OnStar® status LED turns red. The OnStar® Call Center cannot locate the vehicle. Conditions for Clearing the DTC The condition responsible for setting the DTC no longer exists. A history DTC will clear once 50 consecutive malfunction-free ignition cycles have Reference Information Schematic Reference OnStar Schematics Connector End View Reference Component Connector End Views Description and Operation OnStar Description and Operation Electrical Information Reference Circuit Testing
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Circuit/System Testing 1. Disconnect the navigation antenna coax cable from the CIM. 2. Ignition ON, test for 4.5-5.5 volts between the CIM coax cable connection center conductor and ground. If the reading is not within the specified range, replace the CIM. 3. Reconnect the coax cable to the CIM. Disconnect the coax cable from the navigation antenna. 4. Test for 4.5-5.5 volts between the coax cable center conductor and the outer shield. If the reading is not within the specified range, replace the coax cable. 5. If all circuits test normal, replace the navigation antenna. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Mobile Telephone Digital Antenna Replacement Control Module References for CIM replacement, setup, and programming SYMPTOMS - CELLULAR COMMUNICATION 1. Perform the Diagnostic System Check - Vehicle . Before using the Symptom Tables, verify that all of the following are true: There are no DTCs set. The control module can communicate via the serial data link. 2. Review the system operation in order to familiarize yourself with the system functions. Refer to OnStar Description and Operation. 3. Perform the OnStar Symptom Diagnosis. This symptom table will enable the user to verify the customer complaint and narrow it to its source. Visual/Physical Inspection IMPORTANT: The following steps must be completed before using the symptom tables.
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Inspect for aftermarket devices which could affect the operation of the system. Refer to Inspect the easily accessible or visible system components for obvious damage or conditions Intermittent Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Symptom List Refer to a symptom diagnostic procedure from the following list in order to diagnose the OnStar One or More Buttons Inoperative OnStar Call Center Remote Function Requests Inoperative OnStar Microphone Inoperative - Caller Cannot Be Heard OnStar Steering Wheel Control Functions Inoperative OnStar Button LED Inoperative No (or Noisy) OnStar Audio OnStar Global Positioning System (GPS) Data Not Current or Inaccurate SYMPTOMS - ENTERTAINMENT Visual/Physical Inspection Inspect for aftermarket devices which could affect the operation of the Radio/Audio system. Inspect the easily accessible or visible system components for obvious damage or conditions Intermittent Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to IMPORTANT: Review the system operation in order to familiarize yourself with the system functions. Refer to Radio/Audio System Description
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Content .. 2224 2225 2226 2227 ..
|
|
|