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Instrument Cluster and Panel Illumination
The instrument panel dimmer switch (part of the headlamp switch) allows the brightness level of the backlights and displays to be adjusted dependent upon the headlamp switch position and the instrument panel dimmer switch position. The instrument panel dimmer switch is monitored by the smart junction box (SJB). When the parking lamps are on, the SJB controls the lighting by sending a pulse width modulated (PWM) dimming signal to the dimmable lighted components and a message over the medium speed controller area network (CAN) to the electronic automatic temperature control (EATC) (if equipped), the audio unit and the instrument cluster. The following components are dimmable:
audio unit
instrument cluster
EATC module
manual temperature control
steering wheel controls (includes speed control, redundant audio [if equipped], and message center switches [if equipped])
headlamp switch
PRNDL display (part of the shifter assembly)
adjustable pedals switch (if equipped)
center stack (includes the hazard, traction control, and parking aid switches [if equipped])
analog clock (if equipped)
decklid release switch (if equipped)
The following components are not dimmable and are illuminated when the ignition switch is in the ON position:
auxiliary climate control switches (if equipped)
door lock control switches
window control switches
Inspection and Verification
Verify the customer concern.
Visually inspect for obvious signs of electrical damage.
Visual Inspection Chart
Electrical
Smart junction box (SJB) fuse 15 (10A)
Bulb(s)
Circuitry
Manual temperature control
Steering wheel controls
PRNDL display
Adjustable pedal switch (if equipped)
Center stack switches (includes the hazard, traction control [if equipped], and parking aid disable switches [if equipped])
Analog clock (if equipped)
Decklid release switch (if equipped)
Auxiliary climate control switches (if equipped)
Door lock control switches
Window control switches
Headlamp switch
Electronic automatic temperature control (EATC) module and switches
Audio unit
SJB
Instrument cluster
If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
Verify the exterior lamps operate correctly. If the exterior lamps do not operate correctly, refer to Section 417-01 to continue diagnosis of the exterior lamps.
If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
check that the program card is correctly installed.
check the connections to the vehicle.
check the ignition switch position.
If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
CAN circuits fault; all electronic control units no response/not equipped, refer to Section 418-00 .
No response/not equipped for SJB, refer to Section 419-10 .
No response/not equipped for instrument cluster, refer to Section 413-01 .
System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs, and carry out the self-test diagnostics for the SJB and the instrument cluster.
If the DTCs retrieved are related to the concern, go to the Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index.
If no DTCs related to the concern are retrieved, GO to Symptom Chart .
Smart Junction Box (SJB) Diagnostic Trouble Code (DTC) Index
DTC
Description
Source
Action
B1247
Panel Dim Switch Circuit Open
SJB
Go To Pinpoint Test F .
B2026
Incandescent Backlighting Output Circuit Failure
SJB
Go To Pinpoint Test D .
B2027
LED Backlighting Output Circuit Failure
SJB
Go To Pinpoint Test D .
All other DTCs
-
SJB
REFER to Section 419-10 .
Your best bet , take it to a qualified repair shop.
Engine will turn over but not crank.????
Engine cranks but won't start an run . Odometer
The instrument cluster receives odometer rolling count status from the PCM and stores the mileage in non-volatile memory (NVM). When the instrument cluster fails to receive the odometer rolling count status for more than two seconds, the odometer display will show dashes.
B2143
Odometer NVM Memory Failure
Instrument Cluster
INSTALL a new instrument cluster. REFER to Instrument Cluster in this section. CLEAR the DTCs. REPEAT the self-test.
Taking the vehicle an having it checked for DTC'S - diagnostic trouble codes would be a good idea ! Not to autozone or advance etc... Need a professional or factory scanner to check for these codes .
B - Replace engine oil and oil filter. 1 - Rotate tires, and check tire pressure and condition
3 - Replace transmission fluid and transfer fluid (if equipped).
Here is a description of what each individual Maintenance code means for your vehicle. (Please remember that more than one code may be displayed at a time) A - Replace just engine oil and Filter B - Replace engine oil and oil filter. Also inspect Brake system and components and perform a tire rotation. 1 - Rotate tires, and check tire pressure and condition 2 - Replace air cleaner element, check drive belt, and replace dust and pollen filter.
3 - Replace transmission fluid and transfer fluid (if equipped).
4 - Replace spark plugs, replace timing belt (if equipped), inspect water pump, and inspect/ adjust valve clearance.
5 - Replace engine coolant 6 - Replace rear differential fluid (if equipped).
A: Replace Engine Oil
B: Replace Engine Oil and Filter. Inspect various systems and components
1: Rotate Tires and check tire pressure and condition
2: Replace air cleaner element, check drive belt and replace dust and pollen filter
3: Replace transmission fluid and transfer fluid (if equipped)
4: Replace spark plugs, replace timing belt (if equipped), inspect water pump, and inspect value clearance
5: Replace Engine Coolant
6: Replace rear differential fluid (if equipped)
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Error codes to many popular brand TVs are given.
A: Replace Engine Oil
B: Replace Engine Oil and Filter. Inspect various systems and components
1: Rotate Tires and check tire pressure and condition
2: Replace air cleaner element, check drive belt and replace dust and pollen filter
3: Replace transmission fluid and transfer fluid (if equipped)
4: Replace spark plugs, replace timing belt (if equipped), inspect water pump, and inspect value clearance
5: Replace Engine Coolant
6: Replace rear differential fluid (if equipped)
First of all, 2005 Buick Rainier is equipped with two different engines, 4.2L (VIN code "S") and the 5.3L (VIN code "P"). It would be really nice to know which one we are talking about.
Then, it doesn't really matter which engine your Buick is equipped with if you are looking for an EGR valve, because NEITHER of these engines is equipped with one.
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