Frelander 2. Manual - part 148
Steering Column Switches - Steering Column Switches
Diagnosis and Testing
Principles of Operation
For a detailed description of the steering column switches, refer to the relevant Description and Operation section in the
workshop manual.
REFER to:
Steering Column Switches
(211-05 Steering Column Switches, Description and Operation).
Inspection and Verification
CAUTION: Diagnosis by substitution from a donor vehicle is NOT acceptable. Substitution of control modules does
not guarantee confirmation of a fault, and may also cause additional faults in the vehicle being tested and/or the donor
vehicle.
1. Verify the customer concern.
1.
2. Visually inspect for system integrity and obvious signs of mechanical or electrical damage.
2.
Visual Inspection
Mechanical
Electrical
Switches
Fuse(s)
Electrical connector(s)
Wiring Harness
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before
proceeding to the next step.
3.
4. If the cause is not visually evident, check Central Junction Box (CJB) for Diagnostic Trouble Codes (DTCs) and
refer to the DTC Index.
4.
DTC Index
• NOTE: If the control module or a component is suspect and the vehicle remains under manufacturer warranty, refer to the
Warranty Policy and Procedures manual (section B1.2), or determine if any prior approval programme is in operation, prior
to the installation of a new module/component.
• NOTE: Generic scan tools may not read the codes listed, or may read only five digit codes. Match the five digits from the
scan tool to the first five digits of the seven digit code listed to identify the fault (the last two digits give extra
information read by the manufacturer-approved diagnostic system).
• NOTE: When performing voltage or resistance tests, always use a digital multimeter (DMM) accurate to three decimal
places and with a current calibration certificate. W hen testing resistance, always take the resistance of the DMM leads into
account.
• NOTE: Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
• NOTE: If DTCs are recorded and, after performing the pinpoint tests, a fault is not present, an intermittent concern may
be the cause. Always check for loose connections and corroded terminals.
DTC
Description
Possible Cause
Action
B109512 W iper On/Off Relay -
circuit short to power
W iper On/Off relay circuit - short to
power
Refer to electrical circuit diagrams and
check wiper On/Off relay circuit for
short to power
B109514 W iper On/Off Relay -
circuit short to ground or
open
W iper On/Off relay circuit - short to
ground, open circuit
Refer to electrical circuit diagrams and
check wiper On/Off relay circuit for
short to ground, open circuit
B109612 W iper High/Low Relay -
circuit short to power
W iper High/Low relay circuit - short to
power
Refer to electrical circuit diagrams and
check wiper High/Low relay circuit for
short to power
B109614 W iper High/Low Relay -
circuit short to ground or
open
W iper High/Low relay circuit - short to
ground, open circuit
Refer to electrical circuit diagrams and
check wiper High/Low relay circuit for
short to ground, open circuit
B10AC86 Cruise Control Switch -
Signal invalid
Signal invalid
Carry out the pinpoint tests associated
to this DTC using the manufacturer
approved diagnostic system
B10AC87 Cruise Control Switch -
Missing message
Missing message
Carry out the pinpoint tests associated
to this DTC using the manufacturer
approved diagnostic system
B10AC95 Cruise Control Switch -
W rong assembly
Mis-match between Car Configuration
File and vehicle
Check/up-date Car Configuration File
using the manufacturer approved
diagnostic system
B112B07 Steering Wheel Module -
Mechanical Failures
Any position or button on wiper stalk
active for more than 60 seconds (180
seconds for speed control buttons)
Switch internal failure
Check for stuck wiper or speed control
buttons. Install a new switch as
required.
REFER to:
Steering Column
Multifunction Switch
(211-05 Steering
Column Switches, Removal and
Installation).