Suzuki XL7 2007 Service Manual page 1559

DTC P2534
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 P2534: Ignition 1 Switch Circuit Low Voltage
Circuit/System Description
The transmission control module (TCM) continuously
monitors the ignition voltage circuit. A low ignition
voltage reading at the TCM will cause DTC P2534 to set.
Conditions for Running the DTC
• No Engine Speed Circuit Malfunction, DTC P0727.
• No Lost Communications with the ECM, DTC U0100.
• NO CAN Bus Reset Counter Overrun, DTC U2104.
• Engine speed is 400 RPM or greater.
• Battery Voltage is greater than 9.0 volts.
• Not in Emergency Mode.
Conditions for Setting the DTC
The TCM detects that ignition voltage is less than 8.68
volts for 20 seconds.
Action Taken When the DTC Sets
• DTC P2534 is a Type A DTC.
• The transmission will operate in 5th gear in D range,
2nd gear in L range.
Conditions for Clearing the DTC
DTC P2534 is a Type A DTC.
Diagnostic Aids
A charging system malfunction may cause variances in
system voltage and set voltage related DTCs. Refer to
"Charging System Test: ".
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"
Automatic Transmission:
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 ignition voltage parameter is greater
than 8.68 volts.
➢ If not greater than the specified range, refer to
"Charging System Test: " before performing Circuit/
System Testing.
Circuit/System Testing
NOTE
You must perform the Circuit/System
Verification before proceeding with Circuit/
System Testing.
1. Ignition OFF, disconnect the C1 harness connector
at the TCM.
2. Test for less than 1.0Ω of resistance between ground
circuit terminal 9 and ground.
➢ If greater than the specified value, test the ground
circuit for an open/high resistance.
3. Ignition ON, verify that a test lamp illuminates
between the B+ circuit terminal 11 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.
4. If all circuits test normal, replace the TCM.
Repair Instructions
Perform the "Diagnostic Repair Verification - Vehicle
Diagnostic Information: " after completing the diagnostic
procedure.
5A-149