Mazda Mazda6 - Page 762

ON-BOARD DIAGNOSTIC
P–29
P
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DTC U2511
A6E697067650204
Diagnostic procedure
• Follow inspection procedures for CAN. (See T–39 MULTIPLEX COMMUNICATION SYSTEM.)
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3 INSPECT FORWARD-G SENSOR PART
SIGNAL CIRCUIT FOR OPEN CIRCUIT
• Inspect continuity between DSC HU/CM
terminal V (harness side) and combine
sensor terminal A (harness side).
• Is there continuity?
Yes Go to next step.
No Repair or replace harness for open circuit between DSC
HU/CM terminal V and combine sensor terminal A, then go
to Step 8.
4 INSPECT FORWARD-G SENSOR PART
SIGNAL CIRCUIT FOR SHORT TO GROUND
• Turn ignition key to OFF.
• Inspect continuity between DSC HU/CM
terminal V (harness side) and ground.
• Is there continuity?
Yes Repair or replace harness for short to ground circuit
between DSC HU/CM terminal V and combine sensor
terminal A, then go to Step 8.
No Go to next step.
5 INSPECT DIAGNOSIS SIGNAL CIRCUIT FOR
SHORT FOR OPEN CIRCUIT
• Turn ignition key to OFF.
• Inspect continuity between DSC HU/CM
terminal S (harness side) and combine
sensor terminal F.
• Is there continuity?
Yes Repair or replace harness for open circuit between DSC
HU/CM terminal S and combine sensor terminal F, then go
to Step 8.
No Go to next step.
6 INSPECT DIAGNOSIS SIGNAL CIRCUIT FOR
SHORT TO GROUND
• Turn ignition key to OFF.
• Inspect continuity between DSC HU/CM
terminal S (harness side) and ground.
• Is there continuity?
Yes Repair or replace harness for short to ground circuit
between DSC HU/CM terminal S and combine sensor
terminal F, then go to Step 8.
No Go to next step.
7 INSPECT COMBINE SENSOR
• Inspect combine sensor.
• Is it okay?
Yes Go to next step.
No Replace combine sensor, then go to next step.
8 VERIFY TROUBLESHOOTING COMPLETED
• Clear DTC from memory.
• Is same DTC present?
Yes Replace DSC HU/CM, then go to next step.
No Go to next step.
9 VERIFY AFTER REPAIR PROCEDURE
• Is there any other DTC present?
Yes Go to applicable DTC inspection.
No Troubleshooting completed.
STEP INSPECTION ACTION
DTC U2511 CAN communication
DETECTION
CONDITION
• Detects that the communication signals from 4WD CM is abnormal.
POSSIBLE
CAUSE
• 4WD CM signals have communication error.