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Troubleshooting for CAN-DTC: Troubleshooting

DIAGNOSTIC INFORMATION AND PROCEDURES REFERENCE CHART

Step Action YES NO
1  DTC Check 
  1. Check DTC in the following control modules.
    • ECM
    • TCM
    • ESP® control module
    • BCM
    • HVAC control module
    • Keyless start control module
    • 4WD control module
    • SDM

Is there any DTC other than CAN-DTC? 		 Go to applicable troubleshooting of DTC other than CAN-DTC. Go to Step 2.
2  Control module connector check 
  1. Disconnect negative cable at battery.
  2. Be sure to disconnect scan tool from DLC.
  3. Disconnect connectors of all control modules/sensors (communicated by CAN) and CAN junction connector. Refer to TROUBLESHOOTING FOR COMMUNICATION ERROR WITH SCAN TOOL USING CAN .
  4. Check for proper connection to terminal of each CAN line of each CAN line of disconnected in Step  3) connectors.
  5. Check CAN junction connector for open, short to other CAN line and high resistance.
  6. If OK, connect all connectors of control modules/sensors communicated by CAN and CAN junction connector securely.
  7. Recheck all control modules communicated by CAN for DTC.

Is there any CAN-DTC? 		 Go to Step 3. Intermittent trouble. Check for intermittent. Refer to INTERMITTENT AND POOR CONNECTION INSPECTION .
3  CAN line check 
  1. Disconnect negative cable at battery.
  2. Disconnect connectors of all control modules/sensors (communicated by CAN). Refer to TROUBLESHOOTING FOR COMMUNICATION ERROR WITH SCAN TOOL USING CAN .
  3. Check all CAN lines between control modules/sensors (communicated by CAN) and DLC for open, short to power circuit, short to ground circuit, short to other CAN line and high resistance. Refer to TROUBLESHOOTING FOR COMMUNICATION ERROR WITH SCAN TOOL USING CAN .

Are all CAN lines in good condition? 		 Go to Step 4. Repair CAN line.
4  Power and ground circuits check of BCM, ECM, ABS/ESP® control module and combination meter 
  1. Check power and ground circuits the following control module.

Are they in good condition? 		 Go to Step 5. Repair power and/or ground circuit.
5  CAN communication check of BCM, ECM, ABS/ESP® control module and combination meter 
  1. Turn ignition switch to OFF position.
  2. Connect BCM, ECM, ABS/ESP® control module and combination meter connectors.
  3. Perform "Communication Bus Check" under "Bus Check" using SUZUKI-SDT with ignition switch turned ON.

Are all of BCM, ECM, ABS/ESP® control module and combination meter normally displayed? 		 Go to Step 12. Go to Step 6.
6  Terminating resistance check in ECM and combination meter 
  1. Turn ignition switch to OFF position and then disconnect negative (-) cable at battery.
  2. Measure resistance between CAN High terminal (2) and CAN Low terminal (3) on DLC (1).
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If resistance 57 - 67 Ω? 		 Go to Step 7. Go to Step 8.
7  Substitute ECM and recheck 
  1. Substitute a known-good ECM and recheck DTC

Is it in good condition? 		 End. Substitute a known-good combination meter and recheck DTC If NG, go to Step 11.
8  Terminating resistance check in ECM 
  1. Disconnect combination meter connector.
  2. Measure resistance between CAN High terminal and CAN Low terminal on DLC as the same manner as Step 6.

Is resistance 114 - 134 Ω? 		 Substitute a known-good combination meter. Go to Step 9.
9  Internal circuit check in BCM 
  1. Make sure that ignition switch is OFF position and battery negative (-) cable is disconnected.
  2. Disconnect ABS/ESP® control module connector.
  3. Measure resistance between the following.
    • Between CAN High terminal on DLC and "E08-2" terminal on ABS/ESP® control module connector.
    • Between CAN Low terminal on DLC and "E08-15" terminal on ABS/ESP® control module connector.

Is each resistance 0 - 1 Ω? 		 Go to Step 10. Substitute a known-good BCM.
10  Internal circuit check in ABS/ESP® control module 
  1. Make sure that ignition switch is OFF position and battery negative (-) cable is disconnected.
  2. Connect ABS/ESP® control module connector and disconnect ECM connector.
  3. Measure resistance between the following.
    • Between CAN High terminal on DLC and "E01-4" terminal on ECM connector.
    • Between CAN Low terminal on DLC and "E01-19" terminal on ECM connector.

If each resistance 0 - 1 Ω? 		 Substitute a known-good ECM and recheck DTC If NG, go to step 11. Substitute a known-good ABS/ESP® control module.
11  Substitute BCM and recheck 
  1. Substitute a known-good BCM and recheck DTC

Is it in good condition? 		 End. Substitute a known-good ABS/ESP® control module.
12  CAN communication check of TCM (CVT model) 
  1. Turn ignition switch to OFF position.
  2. Connect TCM connectors.
  3. Perform "Communication Bus Check" under "Bus Check" using SUZUKI-SDT with ignition switch turned ON.

Are all of BCM, ECM, ABS/ESP® control module, combination meter and TCM normally displayed? 		 Go to Step 13. Check power and ground circuits of TCM. Refer to TCM POWER SUPPLY AND GROUND CIRCUIT CHECK . If OK, substitute a known-good TCM.
13  CAN communication check of keyless start control module (keyless start model) 
  1. Turn ignition switch to OFF position.
  2. Connect keyless start control module connector.
  3. Perform "Communication Bus Check" under "Bus Check" using SUZUKI-SDT with ignition switch turned ON.

Are all of BCM, ECM, ABS/ESP® control module, combination meter, TCM and keyless start control module normally displayed? 		 Go to Step 14. Check power and ground circuits of keyless start control module. Refer to KEYLESS START CONTROL MODULE POWER AND GROUND CIRCUIT CHECK . If OK, substitute a known-good keyless start control module.
14  CAN communication check of Yaw rate/G sensor assembly (ESP® model) 
  1. Turn ignition switch to OFF position.
  2. Connect Yaw rate/G sensor assembly connector.
  3. Perform "Communication Bus Check" under "Bus Check" using SUZUKI-SDT with ignition switch turned ON.

Are all of BCM, ECM, ABS/ESP® control module, combination meter, TCM, keyless start control module and Yaw rate/G sensor assembly normally displayed? 		 Go to Step 15. Check power and ground circuit of Yaw rate/G sensor assembly referring to "Step 3" to "Step 5" under DTC C1034/C1039: YAW RATE/G SENSOR ASSEMBLY POWER SUPPLY FAILURE/INTERNAL FAILURE . If OK, substitute a known-good Yaw rate/G sensor assembly.
15  CAN communication check of steering angle sensor (ESP® model) 
  1. Turn ignition switch to OFF position.
  2. Connect steering angle sensor.
  3. Perform "Communication Bus Check" under "Bus Check" using SUZUKI-SDT with ignition switch turned ON.

Are all of BCM, ECM, ABS/ESP® control module, combination meter, TCM, keyless start control module, Yaw rate/G sensor assembly, combination meter, ID controller, 4WD control module and steering angle sensor normally displayed? 		 Go to Step 18. Check power and ground circuit of steering angle sensor referring to "Step 4" and "Step 5" under DTC C1037: STEERING ANGLE SENSOR POWER SUPPLY FAILURE . If OK, substitute a known-good steering angle sensor assembly.
16  CAN communication check of ID controller (Canada model) 
  1. Turn ignition switch to OFF position.
  2. Connect ID controller.
  3. Perform "Communication Bus Check" under "Bus Check" on SUZUKI-SDT with ignition switch turned ON.

Are all of BCM, ECM, ABS/ESP® control module, TCM, keyless start control module, Yaw rate/G sensor assembly, combination meter and ID controller normally displayed? 		 Go to Step 16. Check power and ground circuits of ID controller. If OK, substitute a known-good ID controller.
17  CAN communication check of 4WD control module (4WD model) 
  1. Turn ignition switch to OFF position.
  2. Connect 4WD control module.
  3. Perform "Communication Bus Check" under "Bus Check" on SUZUKI-SDT with ignition switch turned ON.

Are all of BCM, ECM, ABS/ESP® control module, combination meter, TCM, keyless start control module, Yaw rate/G sensor assembly, combination meter, ID controller and 4WD control module normally displayed? 		 Go to Step 17. Check power and ground circuits of 4WD control module referring to "Step 2" and "Step 3" under DTC C1240: 4WD CONTROL MODULE POWER SUPPLY CIRCUIT MALFUNCTION . If OK, substitute a known-good 4WD control module.
18  CAN communication check of SDM (Advanced air bag model) 
  1. Turn ignition switch to OFF.
  2. Connect SDM connector.
  3. Perform "Communication Bus Check" under "Bus Check" on SUZUKI-SDT with ignition switch turned ON.

Are all of BCM, ECM, ABS/ESP® control module, combination meter, TCM, keyless start control module, Yaw rate/G sensor assembly, combination meter, ID controller, 4WD control module, steering angle sensor and SDM normally displayed? 		 Recheck DTC. Check power and ground circuit of SDM. Refer to SDM POWER SUPPLY AND GROUND CIRCUIT CHECK . If OK, substitute a known-good SDM.
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