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Possible Causes

WARNING: This page is about a different car, the 2005 Mazda Tribute. However, it is still accessible from the selected car via links, so may be relevant.
NO HIGH SPEED CONTROLLER AREA NETWORK (CAN) COMMUNICATION - DIAGNOSTIC PROCEDURE

PINPOINT TEST 7 NO HIGH SPEED CONTROLLER AREA NETWORK (CAN) COMMUNICATION
STEP INSPECTION ACTION
1 CHECK THE VEHICLE FOR A 4WD CONTROL MODULE
  • Check the vehicle for a 4WD control module.
  • Is the vehicle equipped with a 4WD control module? 
 Yes GO to next step.
No GO to step 4.
2 CHECK THE HIGH SPEED CAN CIRCUITS BETWEEN THE 4WD CONTROL MODULE AND THE DLC FOR AN OPEN
  • Key OFF.
  • Disconnect the 4WD Control Module 0318-01.
  • Measure the resistance between the 4WD control module 0318-01 pin 5, circuit (W), harness side and the DLC D-01 pin 6, circuit (W), harness side; and between the 4WD control module 0318-01 pin 13, circuit (B), harness side and the DLC D-01 pin 14, circuit (B), harness side.
  • Are the resistances less than 5 ohms? 
 Yes GO to next step.
No REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
3 CHECK THE HIGH SPEED CAN WITH THE 4WD CONTROL MODULE DISCONNECTED
  • Key ON.
  • Enter the following diagnostic mode on the WDS or equivalent Tester: Data Link Diagnostics Test.
  • Does the WDS or equivalent Tester indicate system passed? 
 Yes GO to step 14.
No GO to next step.
4 CHECK HIGH SPEED CAN CIRCUITS BETWEEN THE ABS MODULE AND THE DLC FOR AN OPEN
  • Key OFF.
  • Reconnect the 4WD Control Module 0318-01 (if equipped).
  • Disconnect the ABS Module 0413-101.
  • Measure the resistance between the ABS module 0413-101 pin 11, circuit (W), harness side and the DLC D-01 pin 6, circuit (W), harness side; and between the ABS module 0413-101 pin 15, circuit (B), harness side and the DLC D-01 pin 14, circuit (B), harness side.
  • Are the resistances less than 5 ohms? 
 Yes GO to next step.
No REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
5 CHECK THE HIGH SPEED CAN WITH THE ABS MODULE DISCONNECTED
  • Key ON.
  • Enter the following diagnostic mode on the WDS or equivalent Tester: Data Link Diagnostics Test.
  • Does the WDS or equivalent Tester indicate system passed? 
 Yes GO to step 13.
No GO to next step.
6 CHECK THE HIGH SPEED CAN CIRCUITS BETWEEN THE INSTRUMENT CLUSTER AND THE DLC FOR AN OPEN
  • Key OFF.
  • Disconnect the Instrument Cluster 0922-101.
  • Measure the resistance between the instrument cluster 0922-101 pin 12, circuit (W), harness side and the DLC D-01 pin 6, circuit (W), harness side; and between the instrument cluster 0922-101 pin 13, circuit (B), harness side and the DLC D-01 pin 14, circuit (B), harness side.
  • Are the resistances less than 5 ohms? 
 Yes GO to next step.
No REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
7 CHECK THE HIGH SPEED CAN CIRCUITS BETWEEN THE PCM AND THE DLC FOR AN OPEN
  • Disconnect the PCM 0140-175b/275b.
  • Measure the resistance between the PCM 0140-175b/275b pin 11, circuit (W), harness side and the DLC D-01 pin 6, circuit (W), harness side; and between the PCM 0140-175b/275b pin 23, circuit (B), harness side and the DLC D-01 pin 14, circuit (B), harness side.
  • Are the resistances less than 5 ohms? 
 Yes GO to next step.
No REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
8 CHECK THE HIGH SPEED CAN CIRCUITS FOR A SHORT TO GROUND
  • Disconnect the ABS Module 0413-101, 4WD Control Module 0318-01 (if equipped).
  • Measure the resistance between the DLC D-01 pin 6, circuit (W), harness side and ground; and between the DLC D-01 pin 14, circuit (B), harness side and ground.
  • Are the resistances greater than 10,000 ohms? 
 Yes GO to next step.
No REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
9 CHECK THE HIGH SPEED CAN CIRCUITS FOR A SHORT TO POWER
  • Key ON.
  • Measure the voltage between the DLC D-01 pin 6, circuit (W), harness side and ground; and between the DLC D-01 pin 14, circuit (B), harness side and ground.
  • Is any voltage indicated? 
 Yes REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
No GO to next step.
10 CHECK THE HIGH SPEED CAN NETWORK WITH A SUBSTITUTED PCM
  • Key OFF.
  • Install a known good PCM. See POWERTRAIN CONTROL MODULE (PCM) .
  • Key ON.
  • Enter the following diagnostic mode on the WDS or equivalent Tester: Data Link Diagnostics Test.
  • Does the WDS or equivalent Tester indicate system passed? 
 Yes GO to next step.
No INSTALL the original PCM. GO to step 12.
11 CHECK FOR CORRECT PCM OPERATION
  • Disconnect all the PCM connectors.
  • Check for:
    • corrosion
    • pushed-out pins
  • Connect all the PCM connectors and make sure they seat correctly.
  • Operate the system and verify the concern is still present.
  • Is the concern still present? 
 Yes INSTALL a new PCM. See POWERTRAIN CONTROL MODULE (PCM) . CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
No The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
12 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
  • Disconnect all the instrument cluster connectors.
  • Check for:
    • corrosion
    • pushed-out pins
  • Connect all the instrument cluster connectors and make sure they seat correctly.
  • Operate the system and verify the concern is still present.
  • Is the concern still present? 
 Yes INSTALL a new instrument cluster. See INSTRUMENT CLUSTER . CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
No The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
13 CHECK FOR CORRECT ABS MODULE OPERATION
  • Disconnect all the ABS module connectors.
  • Check for:
    • corrosion
    • pushed-out pins
  • Connect all the ABS module connectors and make sure they seat correctly.
  • Operate the system and verify the concern is still present.
  • Is the concern still present? 
 Yes INSTALL a new ABS module. See ANTI-LOCK BRAKE SYSTEM (ABS) MODULE . CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
No The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
14 CHECK FOR CORRECT 4WD CONTROL MODULE OPERATION
  • Disconnect all the 4WD control module connectors.
  • Check for:
    • corrosion
    • pushed-out pins
  • Connect all the 4WD control module connectors and make sure they seat correctly.
  • Operate the system and verify the concern is still present.
  • Is the concern still present? 
 Yes INSTALL a new 4WD control module. See FOUR -- WHEEL DRIVE (4WD) CONTROL MODULE . CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
No The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.
G03727341Courtesy of MAZDA MOTORS CORP.

 
G03727342Courtesy of MAZDA MOTORS CORP.

 
G03727343Courtesy of MAZDA MOTORS CORP.

 
G03727344Courtesy of MAZDA MOTORS CORP.

 
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