B143A-13-MICROPHONE 1 - CIRCUIT OPEN
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .
Scheme 139
WHEN MONITORED
With the ignition on.
SET CONDITION
The CTM detects an open on either the (X712) Microphone 1 IN (+) circuit or the (X792) Microphone 1 IN (-) circuit for greater than 10 seconds.
POSSIBLE CAUSES
| Possible Causes |
|---|
| (X712) MICROPHONE 1 IN (+) CIRCUIT OPEN |
| (X792) MICROPHONE 1 IN (-) CIRCUIT OPEN |
| INSIDE REARVIEW MIRROR |
| CONVERGENCE TELEMATICS MODULE (CTM) |
With the ignition on.
The CTM detects the (X712) Microphone 1 IN (+) circuit is shorted to the (X792) Microphone 1 IN (-) circuit for greater than 10 seconds.
| Possible Causes |
|---|
| (X712) MICROPHONE 1 IN (+) CIRCUIT SHORTED TO (X792) MICROPHONE 1 IN (-) CIRCUIT |
| INSIDE REARVIEW MIRROR |
| CONVERGENCE TELEMATICS MODULE (CTM) |
B143D-13-MICROPHONE 2 - CIRCUIT OPEN
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .
With the ignition on.
The CTM detects an open on either the (X722) Microphone 2 IN (+) circuit or the (X723) Microphone 2 IN (-) circuit for greater than 10 seconds.
| Possible Causes |
|---|
| (X722) MICROPHONE 2 IN (+) CIRCUIT OPEN |
| (X723) MICROPHONE 2 IN (-) CIRCUIT OPEN |
| INSIDE REARVIEW MIRROR |
| CONVERGENCE TELEMATICS MODULE (CTM) |
With the ignition on.
The CTM detects the (X722) Microphone 2 IN (+) circuit is shorted to the (X723) Microphone 2 IN (-) circuit for greater than 10 seconds.
| Possible Causes |
|---|
| (X722) MICROPHONE 2 IN (+) CIRCUIT SHORTED TO (X723) MICROPHONE 2 IN (-) CIRCUIT |
| INSIDE REARVIEW MIRROR |
| CONVERGENCE TELEMATICS MODULE (CTM) |
B155C-11-MICROPHONE 1 CIRCUIT (+) - CIRCUIT SHORT TO GROUND
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .
With the ignition on.
The CTM detects a short to ground on the (X712) Microphone 1 IN (+) circuit for greater than 10 seconds.
| Possible Causes |
|---|
| (X712) MICROPHONE 1 IN (+) CIRCUIT SHORTED TO GROUND |
| INSIDE REARVIEW MIRROR |
| RADIO |
| CONVERGENCE TELEMATICS MODULE (CTM) |
B155C-12-MICROPHONE 1 CIRCUIT (+) - CIRCUIT SHORT TO BATTERY
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .
With the ignition on.
The CTM detects a short to battery voltage on the (X712) Microphone 1 IN (+) circuit for greater than 10 seconds.
| Possible Causes |
|---|
| (X712) MICROPHONE 1 IN (+) CIRCUIT SHORTED TO BATTERY VOLTAGE |
| INSIDE REARVIEW MIRROR |
| RADIO |
| CONVERGENCE TELEMATICS MODULE (CTM) |
B155D-11-MICROPHONE 1 CIRCUIT (-) - CIRCUIT SHORT TO GROUND
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .
With the ignition on.
The CTM detects a short to ground on the (X792) Microphone 1 IN (-) circuit for greater than 10 seconds.
| Possible Causes |
|---|
| (X792) MICROPHONE 1 IN (-) CIRCUIT SHORTED TO GROUND |
| INSIDE REARVIEW MIRROR |
| RADIO |
| CONVERGENCE TELEMATICS MODULE (CTM) |
B155D-12-MICROPHONE 1 CIRCUIT (-) - CIRCUIT SHORT TO BATTERY
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .
With the ignition on.
The CTM detects a short to battery voltage on the (X792) Microphone 1 IN (-) circuit for greater than 10 seconds.
| Possible Causes |
|---|
| (X792) MICROPHONE 1 IN (-) CIRCUIT SHORTED TO BATTERY VOLTAGE |
| INSIDE REARVIEW MIRROR |
| RADIO |
| CONVERGENCE TELEMATICS MODULE (CTM) |
B155E-11-MICROPHONE 2 CIRCUIT (+) - CIRCUIT SHORT TO GROUND
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .
With the ignition on.
The CTM detects a short to ground on the (X722) Microphone 2 IN (+) circuit for greater than 10 seconds.
| Possible Causes |
|---|
| (X722) MICROPHONE 2 IN (+) CIRCUIT SHORTED TO GROUND |
| INSIDE REARVIEW MIRROR |
| RADIO |
| CONVERGENCE TELEMATICS MODULE (CTM) |
B155E-12-MICROPHONE 2 CIRCUIT (+) - CIRCUIT SHORT TO BATTERY
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .
With the ignition on.
The CTM detects a short to battery voltage on the (X722) Microphone 2 IN (+) circuit for greater than 10 seconds.
| Possible Causes |
|---|
| (X722) MICROPHONE 2 IN (+) CIRCUIT SHORTED TO BATTERY VOLTAGE |
| INSIDE REARVIEW MIRROR |
| RADIO |
| CONVERGENCE TELEMATICS MODULE (CTM) |
B155F-11-MICROPHONE 2 CIRCUIT (-) - CIRCUIT SHORT TO GROUND
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .
With the ignition on.
The CTM detects a short to ground on the (X723) Microphone 2 IN (-) circuit for greater than 10 seconds.
| Possible Causes |
|---|
| (X723) MICROPHONE 2 IN (-) CIRCUIT SHORTED TO GROUND |
| INSIDE REARVIEW MIRROR |
| RADIO |
| CONVERGENCE TELEMATICS MODULE (CTM) |
B155F-12-MICROPHONE 2 CIRCUIT (-) - CIRCUIT SHORT TO BATTERY
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .
With the ignition on.
The CTM detects a short to battery voltage on the (X723) Microphone 2 IN (-) circuit for greater than 10 seconds.
| Possible Causes |
|---|
| (X723) MICROPHONE 2 IN (-) CIRCUIT SHORTED TO BATTERY VOLTAGE |
| INSIDE REARVIEW MIRROR |
| RADIO |
| CONVERGENCE TELEMATICS MODULE (CTM) |
With the ignition on.
The CTM monitors the input voltage. This Diagnostic Trouble Code (DTC) is set when the input voltage is below 9 volts for greater than 15 seconds.
| POSSIBLE CAUSES |
|---|
| (A937) FUSED B(+) CIRCUIT OPEN OR EXCESSIVE RESISTANCE |
| (Z911) GROUND CIRCUIT OPEN OR EXCESSIVE RESISTANCE |
| CHARGING SYSTEM CONCERN |
| CONVERGENCE TELEMATICS MODULE (CTM) |
With the ignition on.
The CTM monitors the input voltage. This Diagnostic Trouble Code (DTC) is set when the input voltage is above 17 volts for greater than 15 seconds.
| POSSIBLE CAUSES |
|---|
| CHARGING SYSTEM CONCERN |
| CONVERGENCE TELEMATICS MODULE (CTM) |
With the ignition on.
The Convergence Telematics Module (CTM) (also known as the Hands Free Module) detects an internal failure.
| Possible Causes |
|---|
| CONVERGENCE TELEMATICS MODULE (CTM) |
With the ignition on.
The Body Control Module (BCM) detects a short condition in one of the CAN IHS Bus (125K) circuits for less than one second.
| Possible Causes |
|---|
| (D157) CAN IHS BUS (125K) (+) CIRCUIT SHORTED TO GROUND |
| (D158) CAN IHS BUS (125K) (-) CIRCUIT SHORTED TO VOLTAGE |
| (D157) CAN IHS BUS (125K) (+) CIRCUIT SHORTED TO THE (D158) CAN IHS BUS (125K) (-) CIRCUIT |
| ANY CAN IHS BUS MODULE |
| BODY CONTROL MODULE (BCM) |
Scheme 140
Scheme 141
Scheme 142
- TEST FOR INTERMITTENT CONDITION Turn the ignition on. With the scan tool, record and erase DTCs. Cycle the ignition from on to off three times. Turn the ignition on and wait 10 seconds. With the scan tool, read active DTCs. Does the scan tool display this DTC as active? Yes Go To 2 No Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-646248-S24006549342014072800000) .
- CHECK THE CAN IHS BUS CIRCUITS FOR A CONCERN WHILE DISCONNECTING THE CAN IHS BUS MODULES NOTE: When performing this step, turn the ignition off (wait one minute) before disconnecting any module. When the module is disconnected turn the ignition on. NOTE: The BCM contains pass-through circuits which are used to connect the Front and Rear CAN IHS Star Connectors. While monitoring the scan tool, disconnect each CAN IHS Bus (125K) module at the CAN IHS Star Connectors (except for the BCM and DLC), one at a time. Check for this DTC to become stored after disconnecting each CAN IHS Bus (125K) module the vehicle is equipped with. NOTE: If the DTC becomes stored when a particular module is disconnected, that module or related circuits are causing the DTC to set. With all the CAN IHS Bus modules disconnected at the Star Connectors (except for BCM and DLC), does the scan tool display this DTC as active? Yes Go To 3 No Diagnose the wiring and connectors between the CAN IHS Star Connector and the module that when disconnected caused this DTC to become stored for damage or shorted circuits. If OK, replace the module that when disconnected caused this DTC to become stored in accordance with the Service Information. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-646248-S24006549342014072800000) .
- CHECK THE (D158) CAN IHS BUS (125K) (-) CIRCUIT FOR A SHORT TO VOLTAGE Turn the ignition off. Disconnect the scan tool. Turn the ignition on. Measure the voltage between ground and the (D158) CAN IHS Bus (125K) (-) circuit. Is the voltage above 10.0 volts? Yes Repair the short to voltage in the (D158) CAN IHS Bus (125K) (-) circuit. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-646248-S24006549342014072800000) . No Go To 4
- CHECK THE (D157) CAN IHS BUS (125K) (+) CIRCUIT FOR A SHORT TO GROUND Turn the ignition off. Measure the resistance between ground and the (D157) CAN IHS Bus (125K) (+) circuit. Is the resistance above 10k Ohms? Yes Go To 5 No Repair the short to ground in the (D157) CAN IHS Bus (125K) (+) circuit. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-646248-S24006549342014072800000) .
- CHECK FOR CORRECT BUS TERMINATION RESISTANCE Turn the ignition off. Disconnect and isolate the negative battery cable. Measure the resistance between the (D157) CAN IHS Bus (125K) (+) circuit and the (D158) CAN IHS Bus (125K) (-) circuit. Is the resistance between 53.5 and 67 Ohms? Yes Replace the Body Control Module (BCM) in accordance with the Service Information. Refer to «MODULE, BODY CONTROL, REMOVAL»(ref-646224-S08964387072014072800000) . Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-646248-S24006549342014072800000) . No For a resistance measurement above 67 Ohms, an open or high resistance is present in the CAN IHS Bus (125K) (+) circuit or the CAN IHS Bus (125K) (-) circuit between the Star Connectors or one of the termination resistors internal to the Star Connector is damaged. Diagnose and repair as necessary. For a resistance measurement below 53.5 Ohms, a short between the CAN IHS Bus (125K) (+) circuit and the CAN IHS Bus (125K) (-) is present. Diagnose the short between the CAN IHS Bus (125K) (+) circuit and the CAN IHS Bus (125K) (-) circuit. Use the Star Connectors to isolate portions of the bus to assist in determining the location of the concern. Diagnose and repair as necessary. Perform the BODY VERIFICATION TEST. Refer to «STANDARD PROCEDURE»(ref-646248-S24006549342014072800000) .
With the ignition on.
The Body Control Module (BCM) detects a short condition in one of the CAN IHS Bus (125K) circuits for less than one second.
| Possible Causes |
|---|
| (D157) CAN IHS BUS (125K) (+) CIRCUIT SHORTED TO GROUND |
| (D158) CAN IHS BUS (125K) (-) CIRCUIT SHORTED TO VOLTAGE |
| (D157) CAN IHS BUS (125K) (+) CIRCUIT SHORTED TO THE (D158) CAN IHS BUS (125K) (-) CIRCUIT |
| ANY CAN IHS BUS MODULE |
| BODY CONTROL MODULE (BCM) |
Continuously when the ignition is on.
Battery voltage between 10 and 16 volts.
Body Control Module (BCM) is configured correctly.
The Body Control Module (BCM) detects a short condition in one of the CAN IHS Bus (125K) circuits for less than one second.
Continuously when the ignition is on.
The battery voltage between 10.0 and 16.0 Volts.
Body Control Module (BCM) is configured correctly.
Bus messages not received from the Body Control Module (BCM) for approximately two to five seconds.
U11B8-00 LOST COMMUNICATION WITH INTEGRATED CENTER STACK (ICS)
For a complete wiring diagram, refer to appropriate SYSTEM WIRING DIAGRAMS article .
Continuously when the ignition is on.
The battery voltage is between 10 and 16 volts.
Body Control Module (BCM) is configured correctly.
Bus messages not received from the Integrated Center Stack (ICS) for approximately ten seconds.
| Possible Causes |
|---|
| CAN BUS CIRCUITS OPEN OR SHORTED |
| DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES |
| INTEGRATED CENTER STACK POWER AND GROUND |
| BCM NOT CONFIGURED CORRECTLY |
| INTEGRATED CENTER STACK (ICS) |
| MODULE THAT SET THIS DTC |