Dtc B1013: Sdm Internal Failure - Suzuki SX4 Service Manual
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Also See for SX4:
- Owner's manual (47 pages) ,
- Owner's manual (18 pages) ,
- Owner's manual (278 pages)
Table of Contents
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Step
7
Serial communication circuit check
1) With ignition switch turned OFF, disconnect SDM
connector "L04" and check for proper connection at
SDM connector terminal.
2) If connections are OK, check that "Serial data circuit" is
as follows.
• Insulation resistance of "Serial data circuit" wire is
infinity between its terminal and other terminals at
SDM connector.
• Insulation resistance of "Serial data circuit" wire is
infinity between its terminal and vehicle body ground.
Is circuit in good condition?
8
Scan tool operation check
1) Check if communication is possible by making
communication with other vehicles.
Is it possible to communicate with the other vehicle?
DTC B1013: SDM Internal Failure
DTC Detecting Condition and Trouble Area
DTC detecting condition
Malfunctioned SDM internal circuit, G sensor, memory or CPU. • SDM
NOTE
DTC B1013 can never be cleared once it has been set.
DTC Troubleshooting
Step
1
Was "Air Bag Diagnostic System Check Flow" performed?
2
DTC check
1) Clear DTC referring to "DTC Clearance".
2) Turn OFF ignition switch.
3) Turn ON ignition switch and check DTC.
Is DTC B1013 still indicated?
3
SDM power supply and ground circuit check
1) Check SDM power supply and ground circuit referring to
"SDM Power Supply and Ground Circuit Check".
Is SDM power supply and ground circuit in good condition?
NOTE
Upon completion of inspection and repair work, perform the following items.
• Reconnect all air bag system components and ensure all components are properly mounted.
• Clear DTCs referring to "DTC Clearance", if any.
• Repeat "Air Bag Diagnostic System Check" to confirm that the trouble has been corrected.
Action
Action
Air Bag System:
Yes
Go to Step 8.
Scan tool is in good
condition, check
intermittent trouble
referring to "Intermittent
and Poor Connection
Inspection in Section
00".
Trouble area
Yes
Go to Step 2.
Go to Step 3.
Substitute a known-
good SDM and recheck.
8B-24
No
Repair or replace
defective circuit.
Recheck PCMCIA card
and DLC cable for faulty
condition. If they are
OK, scan tool is faulty.
S7RW0A8204010
No
Go to "Air Bag
Diagnostic System
Check Flow"
Intermittent trouble.
Check for intermittent
referring to "Intermittent
and Poor Connection
Inspection in Section
00".
Repair power supply
and ground circuit.
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Chapters
Table of Contents
Troubleshooting
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Do you have a question about the SX4 and is the answer not in the manual?
Questions and answers
Adjust throttle motor
The idle speed on a Suzuki SX4 should be controlled by the Idle Air Control Valve (IACV) rather than adjusting the idle screw on the throttle body, as the screw is factory set. Before using compressed air in the idle-air-bypass passages, the IACV should be removed to prevent damage to its delicate mechanism. If there is an issue with idle speed, checking the IACV function and referring to the SX4 service manual is recommended.
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I have an issue of crank but not starting When I scan it brought this codeU0100 Which means no communication thou crank sensor wire was cut off but it was fix back What could be wrong and what could be the solution,
increasing revs when changing gears
The Suzuki SX4 may have increasing revs when changing gears due to its drive-by-wire system and the difference in final drive ratios between the manual (4.41) and automatic (2.81) transmissions. This difference causes high cruising RPMs in the manual version and sluggishness in the automatic. Additionally, if the revs climb while going uphill, it may be due to the transmission downshifting or kicking out of overdrive. Other possible causes include low transmission fluid, abuse, or a faulty transmission design.
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My heater stopped working the blower **** is good, control unit ?
Possible issues with the heater in a Suzuki SX4 if the blower is working but the heater is not include:
1. Incorrect Temperature Output
- Temperature control cable broken or bent (non-A/C and manual A/C) → Check the temperature control cable.
- Temperature selector faulty (non-A/C and manual A/C) → Check the temperature selector.
- Incorrect installation of the temperature control cable (non-A/C and manual A/C) → Check and adjust the position as necessary.
- Temperature control door assembly broken → Repair the temperature control door assembly.
- Air ducts clogged → Repair air ducts.
- Heater core leaked or clogged → Replace the heater core.
- Heater hoses leaked or clogged → Replace heater hoses.
- Thermostat faulty → Check the thermostat.
- Temperature control actuator faulty (auto A/C) → Check the temperature control actuator.
- HVAC control module faulty (auto A/C) → Check the HVAC control module.
- Wiring or grounding faulty (auto A/C) → Repair as necessary.
2. Other Possible Causes
- Air flow control cable broken or bent → Check the air flow control cable.
Checking and addressing these components should help identify and resolve the heater issue.
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