2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 584
6. If all circuits test normal, replace the HSM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Driver or Passenger Seat Back Cushion Heater Replacement (Escalade with HP2) ()Driver or Passenger Seat Back Cushion Heater
Replacement (Tahoe with HP2) ()Driver or Passenger Seat Back Cushion Heater Replacement (without HP2) ()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for the HSM replacement, setup, and programming
B2455
DTC B2455
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) provide an overview of each diagnostic category.
DTC Descriptor
DTC B2455 04
- Cellular Phone Microphone Circuit Malfunction Open Circuit
Diagnostic Fault Information
Circuit/System Description
The communication interface module (CIM) provides the cellular phone microphone with a supplied voltage on the cellular phone microphone
signal circuit. When the microphone is in use, voice data from the user is sent back to the CIM on the signal circuit. The CIM provides a ground for
the microphone via the low reference circuit.
Conditions for Running the DTC
* The ignition must be in the RUN or ACC position.
* The system voltage is at least 9.5 V and no more than 15.5 V.
Conditions for Setting the DTC
* The CIM detects an open, short to ground or short to voltage in the cellular phone microphone signal circuit for 10 seconds or greater.
* The CIM detects an open/high resistance in the drain wire circuit for 10 seconds or greater.
Actions Taken When the DTC Sets
* The OnStar(R) status LED turns red.
* The CIM will not receive a signal from the microphone.
* Calls can be placed but the caller cannot be heard.
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 occurred.
Schematic Reference
OnStar Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/OnStar Schematics)
Connector End View Reference
Showing posts with label 6. If all circuits test normal. Show all posts
Showing posts with label 6. If all circuits test normal. Show all posts
Saturday, November 30, 2019
Friday, November 29, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 542
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 542
6. If all circuits test normal, replace the HSM.
B2345 13
1. Ignition OFF, disconnect the X2, X4 harness connectors at the HSM.
2. Test for greater than 850 Ohms between the signal and the low reference circuits listed below:
* Driver seat cushion terminal 9 X4 and terminal 6 X2
* Passenger seat cushion terminal 20 X4 and terminal 8 X2
瀚慖f 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. Test for greater than 850 Ohms between the signal and the low reference circuits listed below:
* Driver seat back terminal 19 X4 and terminal 5 X2
* Passenger seat back terminal 10 X4 and terminal 7 X2
瀚慖f 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 back heater element/temperature sensor.
4. If all circuits test normal, replace the HSM.
B2345 42 or B2345 4B
If either DTC is set, replace the HSM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Driver or Passenger Seat Back Cushion Heater Replacement (Escalade with HP2) ()Driver or Passenger Seat Back Cushion Heater
Replacement (Tahoe with HP2) ()Driver or Passenger Seat Back Cushion Heater Replacement (without HP2) ()
* Driver or Passenger Seat Cushion Heater Replacement (without HP2) ()Driver or Passenger Seat Cushion Heater Replacement (with HP2)
()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for the HSM replacement, setup, and programming
Rear Seat
DTC B2345 (Rear Seat)
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 B2345 00
- Seat Heater Disable Circuit
DTC B2345 13
- Seat Heater Disable Circuit Voltage Low / High Temperature
DTC B2345 42
- Seat Heater Disable Circuit Calibration Data Set Not Programmed
DTC B2345 4B
- Seat Heater Disable Circuit Calibration Not Learned
Diagnostic Fault Information
6. If all circuits test normal, replace the HSM.
B2345 13
1. Ignition OFF, disconnect the X2, X4 harness connectors at the HSM.
2. Test for greater than 850 Ohms between the signal and the low reference circuits listed below:
* Driver seat cushion terminal 9 X4 and terminal 6 X2
* Passenger seat cushion terminal 20 X4 and terminal 8 X2
瀚慖f 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. Test for greater than 850 Ohms between the signal and the low reference circuits listed below:
* Driver seat back terminal 19 X4 and terminal 5 X2
* Passenger seat back terminal 10 X4 and terminal 7 X2
瀚慖f 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 back heater element/temperature sensor.
4. If all circuits test normal, replace the HSM.
B2345 42 or B2345 4B
If either DTC is set, replace the HSM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Driver or Passenger Seat Back Cushion Heater Replacement (Escalade with HP2) ()Driver or Passenger Seat Back Cushion Heater
Replacement (Tahoe with HP2) ()Driver or Passenger Seat Back Cushion Heater Replacement (without HP2) ()
* Driver or Passenger Seat Cushion Heater Replacement (without HP2) ()Driver or Passenger Seat Cushion Heater Replacement (with HP2)
()
* Control Module References (See: Testing and Inspection/Programming and Relearning) for the HSM replacement, setup, and programming
Rear Seat
DTC B2345 (Rear Seat)
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 B2345 00
- Seat Heater Disable Circuit
DTC B2345 13
- Seat Heater Disable Circuit Voltage Low / High Temperature
DTC B2345 42
- Seat Heater Disable Circuit Calibration Data Set Not Programmed
DTC B2345 4B
- Seat Heater Disable Circuit Calibration Not Learned
Diagnostic Fault Information
Wednesday, November 27, 2019
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 519
2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 519
6. If all circuits test normal, test or replace the seat recline position sensor.
B2355 01, B2355 06, B2365 01, B2365 06, B2375 01 or B2375 06
1. Ignition OFF, disconnect the X2 harness connector at the seat adjuster assembly.
2. Test for less than 2 ohms between the low reference circuit terminal 2 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM.
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 6 and ground.
瀚慖f less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the MSM.
瀚慖f greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
4. Verify the appropriate scan tool driver seat sensor parameter is less than 1 volt.
瀚慖f greater than the specified range, test the appropriate signal circuit listed below for a short to voltage. If the circuit tests normal, replace
the MSM.
* Seat front vertical position sensor terminal 1
* Seat rear vertical position sensor terminal 5
* Seat horizontal position sensor terminal 3
5. Install a 3A fused jumper wire between the appropriate signal circuit listed below and the 5-volt reference circuit terminal 6. Verify the
appropriate scan tool driver seat position sensor parameter is greater than 4.75 volts.
* Seat horizontal position sensor terminal 3
* Seat front vertical position sensor terminal 1
* Seat rear vertical position sensor terminal 5
瀚慖f less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the
MSM.
6. If all circuits test normal, test or replace the seat position sensor.
B1850 01, B1850 06, B1860 01 or B1860 06
1. Ignition OFF, disconnect the X2 harness connector at the lumbar adjuster assembly.
2. Test for less than 2 ohms between the low reference circuit terminal C and ground.
瀚慖f greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM.
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal A and ground.
瀚慖f less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the MSM.
瀚慖f greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
4. Verify the appropriate scan tool lumbar sensor parameter is less than 1 volt.
瀚慖f greater than the specified range, test the appropriate signal circuit listed below for a short to voltage. If the circuit tests normal, replace
the MSM.
* Lumbar vertical position sensor terminal B
* Lumbar horizontal position sensor terminal D
5. Install a 3A fused jumper wire between the appropriate signal circuit listed below and the 5-volt reference circuit terminal A. Verify the
appropriate scan tool lumbar sensor parameter is greater than 4.75 volts.
* Lumbar vertical position sensor terminal B
* Lumbar horizontal position sensor terminal D
瀚慖f less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the
MSM.
6. If all circuits test normal, test or replace the lumbar position sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
6. If all circuits test normal, test or replace the seat recline position sensor.
B2355 01, B2355 06, B2365 01, B2365 06, B2375 01 or B2375 06
1. Ignition OFF, disconnect the X2 harness connector at the seat adjuster assembly.
2. Test for less than 2 ohms between the low reference circuit terminal 2 and ground.
瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM.
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 6 and ground.
瀚慖f less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the MSM.
瀚慖f greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
4. Verify the appropriate scan tool driver seat sensor parameter is less than 1 volt.
瀚慖f greater than the specified range, test the appropriate signal circuit listed below for a short to voltage. If the circuit tests normal, replace
the MSM.
* Seat front vertical position sensor terminal 1
* Seat rear vertical position sensor terminal 5
* Seat horizontal position sensor terminal 3
5. Install a 3A fused jumper wire between the appropriate signal circuit listed below and the 5-volt reference circuit terminal 6. Verify the
appropriate scan tool driver seat position sensor parameter is greater than 4.75 volts.
* Seat horizontal position sensor terminal 3
* Seat front vertical position sensor terminal 1
* Seat rear vertical position sensor terminal 5
瀚慖f less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the
MSM.
6. If all circuits test normal, test or replace the seat position sensor.
B1850 01, B1850 06, B1860 01 or B1860 06
1. Ignition OFF, disconnect the X2 harness connector at the lumbar adjuster assembly.
2. Test for less than 2 ohms between the low reference circuit terminal C and ground.
瀚慖f greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM.
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal A and ground.
瀚慖f less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,
replace the MSM.
瀚慖f greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
4. Verify the appropriate scan tool lumbar sensor parameter is less than 1 volt.
瀚慖f greater than the specified range, test the appropriate signal circuit listed below for a short to voltage. If the circuit tests normal, replace
the MSM.
* Lumbar vertical position sensor terminal B
* Lumbar horizontal position sensor terminal D
5. Install a 3A fused jumper wire between the appropriate signal circuit listed below and the 5-volt reference circuit terminal A. Verify the
appropriate scan tool lumbar sensor parameter is greater than 4.75 volts.
* Lumbar vertical position sensor terminal B
* Lumbar horizontal position sensor terminal D
瀚慖f less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the
MSM.
6. If all circuits test normal, test or replace the lumbar position sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
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