Suzuki XL7 2007 Service Manual page 1547

Conditions for Setting the DTC
Engine speed minus input speed is less than 50 RPM for
12 seconds when the TCC is commanded off - low
torque converter slip.
Action Taken When the DTC Sets
The transmission will operate in 5th gear in D range, 2nd
gear in L range.
Conditions for Clearing the DTC
DTC P0742 is a Type A DTC
Diagnostic Aids
Improper transmission fluid level may cause DTC P0741
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"
Automatic Transmission:
Circuit/System Verification
1. Ignition ON, observe the DTC information with a
scan tool.
2. Record Freeze Frame and Failure Records.
3. Clear DTC's.
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.
6. Operate the vehicle in D (drive). Using a scan tool,
observe the TCC Slip Speed parameter in 3rd, 4th,
and 5th gear while the TCC PC Sol. Ref. Current
parameter is more than 1000 mA. The TCC Slip
Speed parameter should not be more than 100 RPM.
Circuit/System Testing
1. Engine ON, apply the parking brake, select P (park)
using the Shift Control.
2. 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, test or replace the Transmission Input
Speed Sensor (ISS). Refer to the "Input Speed
Sensor Replacement" procedure.
3. Operate the vehicle in 3rd gear. Observe Gear Ratio
parameter on the scan tool. The Gear Ratio
parameter should not equal 2.84:1.
➢ If the Gear Ratio parameter equals 2.84:1 while in
3rd gear, test or replace the:
– 3-4, 4-5 shift solenoid valve assembly
– U1 shift valve
Refer to the "Control Valve Body Assembly
Disassemble" procedure.
➢ If all conditions test normal, test or replace the
control valve body assembly. Refer to "Control
Valve Body Replacement" procedure.
4. Perform a line pressure test. Refer to "Line Pressure
Check" procedure.
5. Remove the Control valve body cover. Refer to
"Control Valve Body Cover Removal" procedure.
6. Inspect the inside of the control valve body cover for
excessive sediment. There should not be excessive
sediment.
➢ If excessive sediment is found inspect and replace
as necessary the Torque converter assembly, Input
shaft, and Fluid pump stator shaft assembly. Refer
to "Torque Converter Assembly Removal",
"Forward and Direct Clutch Assembly Assemble"
and "Fluid Pump Cleaning and Inspection"
procedures.
➢ If all conditions test normal, test or replace the
transmission.
5A-137