Speedometer And/Or Odometer Inaccurate Or Inoperative; Tachometer Inaccurate Or Inoperative - Suzuki XL7 2007 Service Manual

Speedometer and/or Odometer Inaccurate
or Inoperative
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: ".
Circuit/System Description
The instrument panel cluster (IPC) displays the vehicle
speed based on the information from the engine control
module (ECM). The ECM converts the data from the
vehicle speed sensor to a 4000 pulses/mile signal. The
ECM sends the vehicle speed information via high speed
GMLAN serial data circuit to the body control module
(BCM). The BCM then sends the information via low
speed GMLAN to the IPC to order to display the vehicle
speed and miles traveled.
Reference Information
Schematic Reference
"Instrument Cluster Schematics"
Connector End View Reference
"Displays and Gages Connector End Views"
Description and Operation
"Instrument Cluster Description and Operation"
Electrical Information Reference
• "Circuit Testing: "
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
Scan Tool Reference
• "Scan Tool Output Controls - Displays and Gages"
• "Scan Tool Data List - Displays and Gages"
• "Scan Tool Data Definitions - Displays and Gages"
Circuit/System Testing
1. Ignition OFF, raise the vehicles drive wheels.
2. Engine ON, transmission in drive, verify the scan tool
Vehicle Speed Sensor parameter matches the
speedometer display.
➢ If the Vehicle Speed Sensor parameter does not
match the speedometer display, replace the IPC.
3. Verify that the odometer is operating properly.
➢ If the odometer is not operating properly, replace
the IPC.
Repair Instructions
Perform the "Diagnostic Repair Verification - Vehicle
Diagnostic Information: " after completing the diagnostic
procedure.
Instrumentation / Driver Info. / Horn:
"Control Module References: " for IPC replacement,
setup, and programming

Tachometer Inaccurate or Inoperative

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: ".
Circuit/System Description
The instrument panel cluster (IPC) displays the engine
speed based on the information from the engine control
module (ECM). The ECM converts the data from the
engine speed sensor to a 2 pulses/engine revolution
signal. The ECM sends the engine speed information via
high speed GMLAN serial data circuit to the body control
module (BCM). The BCM then sends the information via
low speed GMLAN to the IPC to order to display the
engine speed.
Reference Information
Schematic Reference
"Instrument Cluster Schematics"
Connector End View Reference
"Displays and Gages Connector End Views"
Description and Operation
"Instrument Cluster Description and Operation"
Electrical Information Reference
• "Circuit Testing: "
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
Scan Tool Reference
• "Scan Tool Output Controls - Displays and Gages"
• "Scan Tool Data List - Displays and Gages"
• "Scan Tool Data Definitions - Displays and Gages"
Circuit/System Testing
Ignition ON, engine ON, verify the scan tool Engine
Speed parameter matches the tachometer display.
➢ If the Engine Speed parameter does not match the
tachometer display, replace the IPC.
Repair Instructions
Perform the "Diagnostic Repair Verification - Vehicle
Diagnostic Information: " after completing the diagnostic
procedure.
"Control Module References: " for IPC replacement,
setup, and programming
9C-50