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Secondary and Configurable Customer Control System: Diagnosis Cadillac SRX II facelift

Memory Modules ~866 words

Diagnostic Code Index

DTCDescription
DTC B3622DTC B3622 39 Steering Wheel Controls Internal Malfunction DTC B3622 59 Steering Wheel Controls Signal Circuit Protection Time-Out

DIAGNOSTIC CODE INDEX

Diagnostic Instructions

  1. Perform the «Diagnostic System Check - Vehicle»(ref-644698-S03753758692014072300000) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(ref-644698-S14897089332014072300000) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(ref-644698-S14982480842014072300000) provides an overview of each diagnostic category.

Diagnostic Fault Information

CircuitShort to GroundOpen/High ResistanceShort to VoltageSignal Performance
B+U1510 00U1510 00
Signal-Terminal 111B3622 39, B3622 59
Signal-Terminal 311B3622 39, B3622 59
Serial DataU1510 00U1510 00U1510 00
Low ReferenceU1510 00
1. Steering Wheel Controls Inoperative

Conditions for Running the DTC

Ignition ON.

Conditions for Setting the DTC

B3622 39

An internal electrical malfunction has been detected in the steering wheel controls switch.

B3622 59

A stuck switch has been detected in the steering wheel controls switch.

Action Taken When the DTC Sets

No action is taken.

Conditions for Clearing the DTC

The DTC will clear when the conditions for setting the DTC are no longer present.

Circuit/System Testing

  1. Ignition ON.
  2. Verify all S70R Steering Wheel Controls Switch - Right functions operate properly. If any S70R Steering Wheel Controls Switch - Right function does not operate properly Replace S70R Steering Wheel Controls Switch - Right. If all S70R Steering Wheel Controls Switch - Right functions operate properly
  3. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S70L Steering Wheel Controls Switch - Left, ignition ON.
  4. Test for less than 1V between the following signal circuits and ground Voice - Terminal 1 Mute - Terminal 3 If 1 volt or greater Repair the short to voltage on the circuit. If less than 1 volt
  5. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S70R Steering Wheel Controls Switch - Right.
  6. Test for infinite resistance between the following signal circuit terminals and ground. Voice - Terminal 1 Mute - Terminal 3 If less than infinite resistance Repair the short to ground on the circuit If infinite resistance
  7. Test for less than 2 ohms between the following signal circuit terminals S70R Steering Wheel Controls Switch - Right signal circuit terminal 1 and S70L Steering Wheel Controls Switch - Left signal circuit terminal 1 S70R Steering Wheel Controls Switch - Right signal circuit terminal 3 and S70L Steering Wheel Controls Switch - Left signal circuit terminal 3 If 2 ohms or greater Repair the open/high resistance in the circuit. If less than 2 ohms
  8. Replace the S70L Steering Wheel Controls Switch - Left.

Visual/Physical Inspection

  1. Inspect for aftermarket devices which could affect the operation of the steering wheel controls. Refer to «Checking Aftermarket Accessories»(ref-644726-S15551717792014072300000) .
  2. Inspect the easily accessible or visible system components, for obvious damage or conditions, which could cause the symptom.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

Refer to Steering Wheel Controls Malfunction in order to diagnose the symptom.

  1. Perform the «Diagnostic System Check - Vehicle»(ref-644698-S03753758692014072300000) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(ref-644698-S14897089332014072300000) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(ref-644698-S14982480842014072300000) provides an overview of each diagnostic category.
CircuitShort to GroundOpen/High ResistanceShort to VoltageSignal Performance
B+U1510 00
Signal-Terminal 111B3622 39, B3622 59
Signal-Terminal 311B3622 39, B3622 59
Serial DataU1510 00U1510 00U1510 00
Low ReferenceU1510 00
1. Steering Wheel Controls Inoperative

All Controls Malfunction

  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S70R Steering Wheel Controls Switch - Right, ignition ON.
  2. Test for 2-10 V between the serial data circuit terminal 5 and ground. If less than 2 V Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster. Test for infinite resistance between the serial data circuit and ground. If less than infinite resistance, repair the short to ground on the circuit. If infinite resistance Test for less than 2 ohms in the serial data circuit end to end. If 2 ohms or greater, repair the open/high resistance in the circuit. If less than 2 ohms, replace the P16 Instrument Cluster. If greater than 10 V Ignition OFF, disconnect the harness connector at the P16 Instrument Cluster, ignition ON. Test for less than 1 V between the serial data circuit and ground. If 1 V or greater, repair the short to voltage on the circuit. If less than 1 V, replace the P16 Instrument Cluster. If between 2-10 V
  3. Test or replace S70R Steering Wheel Controls Switch - Right

Left Controls Malfunction

  1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S70L Steering Wheel Controls Switch - Left, ignition ON.
  2. Test for less than 1 volt between the following signal circuits and ground Voice - Terminal 1 Mute - Terminal 3 If 1 volt or greater Repair the short to voltage on the circuit. If less than 1 volt
  3. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the S70R Steering Wheel Controls Switch - Right.
  4. Test for infinite resistance between the following signal circuit terminals and ground. Voice - Terminal 1 Mute - Terminal 3 If less than infinite resistance Repair the short to ground on the circuit If infinite resistance
  5. Test for less than 2 ohms on the following signal circuit terminals S70R Steering Wheel Control Switch - Right signal circuit terminal 1 and S70L Steering Wheel Control Switch - Left signal circuit terminal 1 S70R Steering Wheel Control Switch - Right signal circuit terminal 3 and S70L Steering Wheel Control Switch - Left signal circuit terminal 3 If 2 ohms or greater Repair the open/high resistance in the circuit. If less than 2 ohms
  6. Replace the S70L Steering Wheel Controls Switch - Left.

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