Suzuki XL7 2007 Service Manual page 1536

5A-126 Automatic Transmission:
• No Communications DTCs U0100 or U2104.
• Output speed greater than one half that of the input
speed.
• Input speed is greater than 400 RPM.
• Current gear equals 1st for at least 8 seconds.
• Transmission fluid temperature (TFT) is greater than
20°C (68°F).
• Engine speed is greater than 400 RPM.
• Engine speed is greater than the input speed plus 150
RPM for 0.5 second.
• Engine torque is 30-200 N⋅m (22-148 lb ft).
• Input torque fluctuation is less than 25 N⋅m (18 lb ft).
• Shift range equals D, M, or L.
• Ignition voltage is greater than 10.5 volts.
Conditions for Setting the DTC
The following condition is met for 1 second, 5
occurrences.
Input speed - 4.657 times the output speed is greater
than 300 RPM and Input speed - 2.301 times the output
speed is less than 100 RPM.
Action Taken When the DTC Sets
• DTC P0731 is a Type A DTC.
• Inhibit 1st gear.
• No control during N to D garage shift.
Conditions for Clearing the DTC
DTC P0731 is a Type A DTC.
Diagnostic Aids
Improper transmission fluid level may cause DTC P0731
to set. Refer to the "Transmission Fluid Check"
procedure.
Reference Information
Schematic Reference
"Automatic Transmission Controls Schematics"
Connector End View Reference
• "Automatic Transmission Inline Harness Connector
End View"
• "Automatic Transmission Internal Connector End
Views"
• "Automatic Transmission Related Connector End
Views"
Electrical Information Reference
• "Circuit Testing: "
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
DTC Type Reference
• "Diagnostic Trouble Code (DTC) Type Definitions"
• "Diagnostic Trouble Code (DTC) List/Type"
Scan Tool Reference
• "Scan Tool Output Controls - Automatic Transaxle -
AF33-5"
• "Scan Tool Data List - Automatic Transaxle - AF33-5"
• "Scan Tool Data Definitions - Automatic Transaxle -
AF33-5"
Circuit/System Verification
1. Ignition ON, observe the DTC information with a
scan tool.
2. Record Freeze Frame and Failure Records.
3. Clear DTCs.
4. Operate the vehicle under the conditions observed in
the Failure Records.
5. Observe the DTC information with the scan tool.
Verify that the DTC does not set.
Circuit/System Testing
1. Operate the vehicle in 2nd gear. The engine should
not stall when shifting into 2nd gear.
➢ Inspect and repair as necessary, the control valve
body assembly for a stuck 3-4, 4-5 solenoid valve
or a stuck U1 shift valve. Refer to the "Control Valve
Body Assembly Disassemble" procedure.
2. Observe the scan tool Transmission OSS parameter.
The reading should correspond to a known properly
functioning OSS.
➢ If the OSS is malfunctioning, replace the
Transmission Output Speed Sensor (OSS). refer to
the "Output Speed Sensor Replacement"
procedure.
3. Stop the vehicle, apply the parking brake, engine at
idle, select P (park) using the Shift Control.
4. Observe the scan tool Transmission ISS parameter.
The reading should be within 400-800 RPM.
➢ If the ISS parameter is not within the specified
range, replace the Transmission Input Speed
Sensor (ISS). Refer to the "Input Speed Sensor
Replacement" procedure.
5. Firmly apply the brake, select D (drive) using the
Shift Control.
6. Observe the scan tool TCC Slip Speed. The reading
should be within 0-100 RPM.
➢ If the TCC Slip Speed is not within the specified
range:
– Ignition ON, engine OFF, command shift solenoid
1 ON and OFF with a scan tool. The solenoid
should click when commanded ON.