Suzuki XL7 2007 Service Manual page 1528

5A-118 Automatic Transmission:
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
Engine running, verify the transmission control module
(TCM) scan tool battery voltage parameter is between
8.68-18.0 volts.
➢ If not within the specified range, refer to "Charging
System Test: " before performing Circuit/System
Testing.
Circuit/System Testing
You must perform the Circuit/System Verification before
proceeding with Circuit/System Testing.
1. Ignition OFF, disconnect the C1 harness connector
at the transmission control module (TCM).
2. Test for less than 1.0 ohm of resistance between
ground circuit terminal 9 and ground.
➢ If greater than the specified range, test the ground
circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates
between the B+ circuit terminal 1 and ground.
➢ If the test lamp does not illuminate, test the B+
circuit for a short to ground or an open/high
resistance. If the circuit tests normal and the B+
circuit fuse is open, replace the TCM.
➢ If all circuits test normal, replace the TCM.
Repair Instructions
Perform the "Diagnostic Repair Verification - Vehicle
Diagnostic Information: " after completing the diagnostic
procedure.
DTC P0601, P0602, P0603, or P0604
Diagnostic Instructions
• Perform the "Diagnostic System Check - Vehicle
Diagnostic Information: " prior to using this diagnostic
procedure.
• Review "Strategy Based Diagnosis: " for an overview
of the diagnostic approach.
• "Diagnostic Procedure Instructions - Vehicle
Diagnostic Information: " provides an overview of
each diagnostic category.
DTC Descriptor
DTC P0601: Control Module Read Only Memory (ROM)
DTC P0602: Control Module Not Programmed
DTC P0603: Control Module (TCM) Long Term Memory
Reset
DTC P0604: Control Module Random Access Memory
(RAM)
Circuit/System Description
This diagnostic applies to internal microprocessor
integrity conditions within the transmission control
module (TCM) system. This diagnostic also addresses if
the TCM is not programmed.
Conditions for Running the DTC
• The ignition is ON, or the engine is operating.
• The DTCs run once an ignition cycle.
Conditions for Setting the DTC
DTC P0601
The TCM detects that the checksum calculation does not
match the expected checksum.
DTC P0602
The TCM is identified as not programmed.
DTC P0603
The TCM detects an incorrect copy of non-volatile
memory.
DTC P0604
The TCM detects a random access memory (RAM) read/
write error.
Action Taken When the DTC Sets
DTC P0601 and P0602
• DTCs P0601, and P0602 are Type A DTCs.
• The transmission will operate in 5th gear in D range,
2nd gear in L range.
DTC P0603
• DTC P0603 is a Type C DTC.
• The TCM uses default EEPROM values.
• The TCM disables engine start.
DTC P0604
DTC P0604 is a Type A DTC.