Suzuki XL7 2007 Service Manual page 2584

9E-36 Glass / Windows / Mirrors:
4. If all circuits test normal, test or replace the outside
rearview mirror motor.
Component Testing
Outside Rearview Mirror Switch Testing
1. Ignition OFF, disconnect the harness connector at
the outside rearview mirror switch.
2. Test for infinite resistance between all of the signal
terminals and the voltage supply terminal and the
ground circuit with the switch in the open position.
➢ If less than infinite resistance, replace the rearview
mirror switch.
3. Test for less than 1 ohm of resistance between all of
the control terminals and ground with the outside
rearview mirror switch in the proper positions.
➢ If greater than 1 ohm, test the ground circuit for an
open/high resistance. If the circuits test normal,
replace the rearview mirror switch.
Outside Rearview Mirror Motor Testing
1. Ignition OFF, disconnect the harness connector at
the outside rearview mirror motor.
2. Test for 29-90 ohms of resistance between the
control terminal and the ground terminal of the
rearview mirror motor.
➢ If the resistance is not within the specified range,
replace the rearview mirror motor.
Repair Instructions
Perform the "Diagnostic Repair Verification - Vehicle
Diagnostic Information: ".
• "Mirror Replacement"
• "Power Mirror Switch Replacement"
Mirror Compass Display Inoperative or
Inaccurate
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.
Circuit/System Description
The inside rearview mirror (ISRVM) uses 2 magnetic
field sensors for compass direction. One sensor is for
north and south, the other is for east and west. The
ISRVM supplies a signal and low reference to each
sensor. As the vehicle travels with or against the earths
magnetic pull, there will be a change in voltage on one or
both sensors. As a result of the change in voltage, the
ISRVM changes the heading on the compass display.
The internal fault detection for the compass is handled
by the ISRVM.
Reference Information
Schematic Reference
"Inside Rearview Mirror Schematics"
Connector End View Reference
"Mirror Connector End Views"
Electrical Information Reference
• "Circuit Testing: "
• "Connector Repairs: "
• "Testing for Intermittent Conditions and Poor
Connections: "
• "Wiring Repairs: "
Circuit/System Testing
1. Ignition ON, compass ON, verify that there is a
compass reading on the display.
➢ If the display is blank, replace the ISRVM.
➢ If the display shows the letter C or CAL, perform the
compass calibration procedure. Refer to "Compass
Calibration and Magnetic Variance".
2. Verify that the compass reading on the display is
correct.
➢ If not correct, perform the compass magnetic
variation adjustment procedure. Refer to "Compass
Calibration and Magnetic Variance".
3. If the display is still incorrect, replace the ISRVM.
Repair Instructions
Perform the "Diagnostic Repair Verification - Vehicle
Diagnostic Information: ".
• "Rearview Mirror Replacement"
• "Control Module References: " for ISRVM
replacement, setup, and programming