DIAGNOSIS AND TESTING - BLIND SPOT MODULE
The optional Blind Spot Monitor (BSM) system used in this vehicle has two control modules. One control module is dedicated to each side of the vehicle. The blind spot modules are each integral to the blind spot sensor for the same side of the vehicle. Refer to SENSOR, BLIND SPOT, DIAGNOSIS AND TESTING .
DIAGNOSIS AND TESTING - BODY CONTROL MODULE
| WARNING | To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to follow these instructions may result in accidental airbag deployment. |
The hard wired inputs and outputs of the Body Control Module (BCM) may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin out information and location views for the various wire harness connectors, splices and grounds.
However, conventional diagnostic methods will not prove conclusive in the diagnosis of the BCM electronic controls or the communication between modules and other devices that provide some features of the BCM-controlled systems. The most reliable, efficient and accurate means to diagnose the BCM or the electronic controls and communication related to BCM-controlled systems operation requires the use of a diagnostic scan tool. Refer to DIAGNOSIS AND TESTING .
DIAGNOSIS AND TESTING - HEATED SEAT MODULE
In order to obtain conclusive testing, the heated seat system and the Local Interface Network (LIN) data bus circuit must be checked. Any diagnosis of the heated seat system should begin with, the use of a scan tool and the appropriate diagnostic service information.
Refer to SYSTEM WIRING DIAGRAMS for complete circuit schematic or connector pin-out information.
Note. Vehicles equipped with the heated seat option utilize a low voltage cut-off feature. This feature turns off power to the heated seat system anytime vehicle voltage is below 11.7v or above 15.5v. Be certain to check the vehicle electrical system for proper voltage anytime the power seat system appears inoperative.
Before any testing of the heated seat system is attempted, the battery should be fully-charged.
Scheme 15
| CAUTION | The Heated Seat Module mounting tab can be damaged during module removal and installation. Use care to properly align tab to prevent binding that could result in tab breakage. |
- Position the driver front seat to the full rearward position.
- Disconnect and isolate the battery negative cable.
- Disconnect the wire harness connector (4) from the heated seat module (3).
- Unsnap the heated seat module retaining tab (2) from the seat pan (1).
- Remove the heated seat module (3) from the vehicle.
DIAGNOSIS AND TESTING - LOCAL INTERFACE NETWORK MODULE
| WARNING | To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to follow these instructions may result in accidental airbag deployment. |
The hard wired circuits between components related to the Local Interface Network (LIN) module may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.
However, conventional diagnostic methods will not prove conclusive in the diagnosis of the LIN module or the electronic controls or communication between modules and other devices that provide some features of the LIN data bus system. The most reliable, efficient and accurate means to diagnose the LIN module or the electronic controls and communication related to LIN data bus system operation requires the use of a diagnostic scan tool. Refer to DIAGNOSIS AND TESTING .
DIAGNOSIS AND TESTING - PARK ASSIST MODULE
Refer to MODULE, PARK ASSIST, DIAGNOSIS AND TESTING .
DIAGNOSIS AND TESTING - STEERING COLUMN MODULE
| WARNING | To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, Occupant Classification System (OCS), seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to follow these instructions may result in accidental airbag deployment. |
The hard wired circuits between components related to the Steering Control Module (SCM) may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin out information and location views for the various wire harness connectors, splices and grounds.
However, conventional diagnostic methods will not prove conclusive in the diagnosis of the SCM or the electronic controls and communication features of the SCM. The most reliable, efficient and accurate means to diagnose the SCM or the electronic controls and communication features related to SCM operation requires the use of a diagnostic scan tool. Refer to DIAGNOSIS AND TESTING .