Safety Belt System - Safety Belt System
Diagnosis and Testing
Principle of Operation Published: 13-Jun-2013
For a detailed description of the seatbelt system and operation, refer to the relevant description and operation section of the
workshop manual REFER to: (501-20A Safety Belt System)
Safety Belt System (Description and Operation), Safety Belt System (Description and Operation), Safety Belt System (Description and Operation).
Safety Information
WARNINGS:
To avoid accidental deployment the back-up power supply must be depleted before beginning any work on the SRS system
or its components. Failure to follow this instruction may result in personal injury
Do not use a multimeter to probe an SRS module. It is possible for the power from the multimeter battery to trigger the
activation of the module. Failure to follow this instruction may result in personal injury
NOTE: Do not to use a cellular phone or to have a cellular phone in close proximity when working on the SRS system or
components
Power supply depletion
Before beginning any work on the SRS system or related components:
1. Remove the ignition key
2. Disconnect the battery leads, ground first
3. Wait 2 minutes for the power circuit to discharge
There are comprehensive instructions on the correct procedures for SRS system repairs, refer to the relevant section of the
workshop manual
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 checked and/or the donor vehicle
NOTE: Check and rectify basic faults before beginning diagnostic routines including pinpoint tests
1. Verify the customer concern by operating the seatbelt
2. Visually inspect for obvious signs of mechanical or electrical damage
Visual Inspection
Mechanical Electrical
Check for the installation of non-standard accessories which may affect or
obstruct the function of the seatbelt system
Frayed or damaged webbing
Missing or damaged button stop
Pretensioner(s) Buckles/Stalks
Fuses
Wiring harness fault
Correct engagement of electrical
connectors
Loose or corroded connections
Warning lamp bulb(s)
Impact sensor(s)
Buckle sensor(s)
Pretensioner(s)
Belt tension sensor(s)
Restraints control module
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to
the next step
4. If the cause is not visually evident, carry out the test methods described below, alternatively check for diagnostic
trouble codes and refer to the relevant diagnostic trouble code index
Pedestrian Protection System - Pedestrian Protection System
Diagnosis and Testing
Principles of Operation Published: 09-Dec-2013
For a detailed description of the Pedestrian Protection System, refer to the relevant Description and Operation section in the
workshop manual.
REFER to: Pedestrian Protection System (501-20C Pedestrian Protection System, Description and Operation) / Pedestrian Protection System (501-20C Pedestrian Protection System, Description and Operation) / Pedestrian Protection System (501-20C Pedestrian Protection System, Description and Operation).
Inspection and Verification
WARNINGS:
TO AVOID ACCIDENTAL DEPLOYMENT AND POSSIBLE PERSONAL INJURY, THE BACKUP POWER SUPPLY MUST BE DEPLETED
BEFORE REPAIRING OR REPLACING ANY PEDESTRIAN PROTECTION SYSTEM COMPONENTS. TO DEPLETE THE BACKUP POWER
SUPPLY ENERGY, DISCONNECT THE BATTERY GROUND CABLE AND WAIT TWO MINUTES. FAILURE TO FOLLOW THIS
INSTRUCTION MAY RESULT IN PERSONAL INJURY.
Do not use a multimeter to probe the pedestrian protection system actuators. It is possible for the power from the
multimeter battery to trigger the activation of the actuator. Failure to follow this instruction may result in personal injury.
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.
NOTES:
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.
When performing voltage or resistance tests, always use a digital multimeter accurate to three decimal places, and with
an up-to-date calibration certificate. When testing resistance always take the resistance of the digital multimeter leads into
account.
Check and rectify basic faults before beginning diagnostic routines involving pinpoint tests.
It is advisable not to use a cellular phone or to have a cellular phone in close proximity when working on the pedestrian
protection system or components
Given the legal implications of a restraints system failure, harness repairs to pedestrian protection system circuits are
not acceptable. Where the text refers to "REPAIR the circuit", this will normally mean the replacement of a harness.
After 5 hood deployment events, a new Pedestrian Protection System Control Module (PPSCM) and wiring harness must be
installed.
1. Verify the customer concern
2. Visually inspect for obvious signs of damage and system integrity
Visual Inspection
Mechanical Electrical
Hood
Hood hinge
Hood deployment controls
Fuses
Wiring harnesses and connectors
Pedestrian Protection System Control Module (PPSCM)
Impact sensors
Hood deployment controls
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to
the next step
4. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart, alternatively check for
