NHTSA ID Number: 11029067
Manufacturer Communication Number: 552034
TSB/Document Date: 2026-02-27
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TSB/Document ID: 552034
Replacement Service Bulletin Number:
MFR Communication Date: 2026-02-27
MFR Internal Campaign ID/Software Version: 552034
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: UNKNOWN OR OTHER
MFR Component System:
MFR Component Subsystem:
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AQUAHOT
AQUAHOT
AQUAHOT
AQUAHOT
AQUAHOT
AQUAHOT
AQUAHOT
AQUAHOT
AQUAHOT
AQUAHOT
AQUAHOT
PORTS
PORTS
PORTS
PORTS
GROUND
GROUND
GROUND
GROUND
POWER
GROUND
GROUND
GROUND
SWITCH S0
SWITCH S1
SWITCH S2
SWITCH S3
SWITCH S4
SWITCH S5
SWITCH S6
SWITCH S7
ZONE 1 EXCHANGER
ZONE 1 EXCHANGER
ZONE 1 EXCHANGER
ZONE 1 EXCHANGER
ZONE 1 EXCHANGER
ZONE 1 EXCHANGER
ZONE 1 EXCHANGER
ZONE 1 EXCHANGER
ZONE 2 EXCHANGER
ZONE 2 EXCHANGER
ZONE 2 EXCHANGER
ZONE 2 EXCHANGER
FRONT BUNK LIGHTS (PWM 6)
9/30/2022
FAN
FAN
FAN
FAN
FAN
FAN
FAN
FAN
FAN
FAN
FAN
FAN
+
+
+
+
+
+
-
G16
G16
G16
G16
35
4B
42A
50
N/A
N/A
N/A
N/A
14
14
14
14
WHITE
WHITE
WHITE
WHITE
2 of 7
N/A
N/A
N/A
N/A
19
19
65
19
N OTES
BRAKE CONTROLLER DASH GROUND
1:05 PM
D02020810 REV_G 37RB CHASSIS HARNESS DLC
W I RE #
STARTS
CAVI TY
COLOR
STRI P E
EN DS
CAVI TY
8
TO ROOF HARNESS FRONT CONNECTION
EMERGENCY START SWITCH
BSS
28
6
16
LT GREEN
N/A
75
~
CHARGING SOLENOID CONTROLLER TERM SOL
FRONT BATHROOM LIGHTS
FRONT BATHROOM LIGHTS
FRONT BATHROOM LIGHTS
FRONT BATHROOM LIGHTS
GROUND FRONT BATHROOM
GROUND FRONT BATHROOM
GROUND FRONT BATHROOM
GROUND FRONT BATHROOM
BTH2
BTH2
BTH2
BTH2
G21
G21
G21
G21
46C
51
51A
51B
51
51A
51B
65
8
N/A
N/A
N/A
N/A
N/A
N/A
N/A
16
16
16
16
16
16
16
16
GREEN
GREEN
GREEN
GREEN
WHITE
WHITE
WHITE
WHITE
YELLOW
YELLOW
YELLOW
YELLOW
N/A
N/A
N/A
N/A
66B
SPLICE
SPLICE
SPLICE
66B
SPLICE
SPLICE
SPLICE
1
N/A
N/A
N/A
2
N/A
N/A
N/A
TO ROOF HARNESS REAR CONNECTION
TO THE OVERHEAD LIGHT FED FROM FLOOR HARNESS
TO THE OVERHEAD LIGHT FED FROM FLOOR HARNESS
TO THE OVERHEAD LIGHT FED FROM FLOOR HARNESS
TO ROOF HARNESS REAR CONNECTION
TO THE OVERHEAD LIGHT FED FROM FLOOR HARNESS
TO THE OVERHEAD LIGHT FED FROM FLOOR HARNESS
TO THE OVERHEAD LIGHT FED FROM FLOOR HARNESS
REAR BATHROOM LIGHTS
REAR BATHROOM LIGHTS
REAR BATHROOM LIGHTS
GROUND REAR BATHROOM LIGHTS
GROUND REAR BATHROOM LIGHTS
GROUND REAR BATHROOM LIGHTS
BTH3
BTH3
BTH3
G21
G21
G21
46C
48C
48D
48C
48D
65
9
N/A
N/A
N/A
N/A
N/A
16
16
16
16
16
16
GREEN
GREEN
GREEN
WHITE
WHITE
WHITE
RED
RED
RED
N/A
N/A
N/A
66B
SPLICE
SPLICE
66B
SPLICE
SPLICE
5
N/A
N/A
6
N/A
N/A
TO ROOF HARNESS REAR CONNECTION
TO THE OVERHEAD LIGHT FED FROM FLOOR HARNESS
TO THE OVERHEAD LIGHT FED FROM FLOOR HARNESS
TO ROOF HARNESS REAR CONNECTION
TO THE OVERHEAD LIGHT FED FROM FLOOR HARNESS
TO THE OVERHEAD LIGHT FED FROM FLOOR HARNESS
BACKUP LAMP (REVERSE) CIRCUIT
BACKUP LAMP (REVERSE) CIRCUIT
BACKUP LAMP (REVERSE) CIRCUIT
BUL
BUL
BUL
27
64
59
4
A
7
14
14
14
BLUE
BLUE
BLUE
N/A
N/A
N/A
59A
SPLICE
SPLICE
A
N/A
N/A
OEM TO DASH CONNECTION
BACKUP TO TAIL LIGHT HARNESS CONNECTION
7 WAY CONNECTION
BWT
BWTR
GWT
GWTR
FWT
FWTR
LPT
LPT
LPTR
LPTR
53D
53D
53D
53D
53D
53D
53D
34A
53D
34A
8
2
10
4
12
6
7
N/A
1
N/A
16
16
16
16
16
16
16
16
16
16
BROWN
WHITE
GRAY
WHITE
RED
WHITE
ORANGE
ORANGE
WHITE
WHITE
N/A
BROWN
N/A
GRAY
N/A
RED
N/A
N/A
ORANGE
ORANGE
53J
53J
53F
53F
52A
52A
58
SPLICE
58
SPLICE
1
2
1
2
1
2
N/A
N/A
N/A
N/A
BLACKWATER TANK SENSOR SIGNAL
BLACKWATER TANK SENSOR RETURN PANEL TO TANK
GRAYWATER TANK SENSOR SIGNAL
GRAYWATER TANK SENSOR RETURN PANEL TO TANK
FRESHWATER TANK SENSOR SIGNAL
FRESHWATER TANK SENSOR RETURN PANEL TO TANK
LP TANK SENSOR SIGNAL PANEL TO TANK
LP TANK FILL SENSOR SIGNAL PANEL TO FILL SOLENOID
LP TANK SENSOR RETURN PANEL TO TANK
LP TANK SENSOR RETURN PANEL TO FILL SOLENOID
GSC
GSC
GSH
GSH
GSH
GSI
GSR
GSR
GSS
GSS
53B
37
53C
37
46N
53B
53B
37
53B
37
1
A
3
F
7
4
3
C
2
E
16
16
16
16
16
16
16
16
16
16
BROWN
BROWN
BLUE
BLUE
BLUE
ORANGE
RED
RED
GREEN
GREEN
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
22
SPLICE
22
SPLICE
SPLICE
37
22
SPLICE
22
SPLICE
9
N/A
10
N/A
N/A
B
11
N/A
12
N/A
EXT MONITOR PANEL TO AUTO GEN START
SPLICE TO GENERATOR CONNECTOR AT THE GENERATOR
EXT MONITOR PANEL TO AUTO GEN START
SPLICE TO GENERATOR CONNECTOR AT THE GENERATOR
SPLICE TO EMS SYSTEM
GENERATOR CONNECTOR AT THE GENERATOR
EXT MONITOR PANEL TO AUTO GEN START
SPLICE TO GENERATOR CONNECTOR AT THE GENERATOR
EXT MONITOR PANEL TO AUTO GEN START
SPLICE TO GENERATOR CONNECTOR AT THE GENERATOR
KEP
GKEP
C1A
C1A
C1A
C1A
C1A
C1A
C1A
C1A
C1A
54C
54C
54C
DL1
DL2
DL3
DL4
DL5
DL6
DL7
DL8
1
2
4
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
12
12
14
14
14
14
14
14
14
- CEL Doctor: The ANCEL AD310 is one of the best-selling OBD II scanners on the market and is recommended by Scotty Kilmer, a YouTuber and auto mechanic. It can easily determine the cause of the check engine light coming on. After repairing the vehicle's problems, it can quickly read and clear diagnostic trouble codes of emission system, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information.
- Sturdy and Compact: Equipped with a 2.5 foot cable made of very thick, flexible insulation. It is important to have a sturdy scanner as it can easily fall to the ground when working in a car. The AD310 OBD2 scanner is a well-constructed mechanic tool with a sleek design. It weighs 12 ounces and measures 8.9 x 6.9 x 1.4 inches. Thanks to its compact design and light weight, transporting the device is not a problem. The buttons are clearly labelled and the screen is large and displays results clearly.
- Accurate Fast and Easy to Use: The AD310 scanner can help you or your mechanic understand if your car is in good condition, provides exceptionally accurate and fast results, reads and clears engine trouble emission codes in seconds after you fixed the problem. This device will let you know immediately and fix the problem right away without any car knowledge. No need for batteries or a charger, get power directly from the OBDII Data Link Connector in your vehicle.
- OBDII Protocols and Car Compatibility: Many cheap scan tools do not really support all OBD2 protocols. AD310 scanner as it can support all OBDII protocols such as KWP2000, J1850 VPW, ISO9141, J1850 PWM and CAN. This device also has extensive vehicle compatibility with 1996 US-based, 2000 EU-based and Asian cars, light trucks, SUVs, as well as newer OBD2 and CAN vehicles both domestic and foreign. Pls confirm with our customer service whether it is compatible with your vehicle before purchasing.
- Home Necessity and Worthy to Own: This is an excellent code reader to travel or home with as it weighs less and it is compact in design. You can easily slide it in your backpack as you head to the garage, or put it on the dashboard, this will be a great fit for you. The AD310 is not only portable, but also accurate and fast in performance. Moreover, it covers various car brands and is suitable for people who just need a code reader to check their car.
- Multi-Functions - Practical Multi-Functions OBD2 code reader features built-in OBD2 DTC lookup library, which help you to determine the cause of the engine light, read code, erase code, view freeze frame, I/M ready, vehicle information, data flow, real-time curve, get vehicle speed information, calculate load value, engine coolant temperature, get engine speed.
- Wide Capability - Supports 9 protocols compatible with most 1996 US-Based, 2000 EU-Based and Asian cars, and newer OBD II & CAN domestic or import vehicles. Supports 6 languages - English,German, Dutch, Spanish, French, Italian.
- 2.8" LCD Display - Designed with a clear display 2.8" Large LCD screen - white backlight and contrast adjustment. No need any battery or charger, OBD reader gets the power directly from your vehicle through the OBDII Data Link Connector.
- Compact Design - Car diagnostic scanner is equipped with a 2.5 feet long cable and made of a very thick flexible insulator.There are 6 buttons on OBD2 Scanner:scroll up/down,enter/exit and buttons that quick query VIN vehicle number& the DTC fault code.
- ABS / Airbag codes NOT Supported - It is able to read and clear check engine information which is part of OBDII system, but it cannot work with non-OBDII systems, including ABS / Airbag / Oil Service Light, etc.
- 【Your Personal CEL Doctor – Read & Clear Engine Codes】The NT301 OBD2 scanner lets you read diagnostic trouble codes (DTCs), check em-issions readiness, turn off your Check Engine Light (CEL) or MIL, reset monitors, and view live data streams. It retrieves your vehicle's VIN instantly. Like all standard OBD2 scanners, it clears codes only after repairs are completed—if the issue persists, the code will return. Designed for DIYers who want to understand what’s really going on under the hood.
- 【Easy Code Reading – Just Plug & Play】Simply plug into the OBD2 port, turn the ignition to “ON” (engine off), and select the correct menu: Select OBDII-> Wait for seconds-> Select Read codes. For accurate results, ensure your vehicle is compatible and the OBD2 port is free from damage or wiring issues. No batteries needed— powered directly by your car.
- 【Live Data Graphing & Accuracy for Most OBD2 Vehicles】View and log live sensor data in graph form—monitor oxygen sensors, fuel trims, coolant temp, RPM, and more. Spot trends and suspicious values in real time. Compatible with most 1996+ gasoline cars, light trucks, and SUVs sold in the U.S., as well as many 2000+ European and Asian models. Also works on 12V diesel vehicles equipped with OBD2.
- 【S-mog Check Helper – Know Your Readiness Status at a Glance】With dedicated I/M readiness hotkeys and a simple Red-Yellow-Green LED indicator, you’ll instantly know if your vehicle is ready for em-issions testing. Built-in speaker provides audio feedback. No guesswork—just confidence before you head to the test center.
- 【A Must-Have Tool for Every Home Mechanic】Compact, rugged, and ready to use right out of the box. The 2.8” color screen is easy to read, even in daylight. No charging or setup required—just plug into the 16-pin DLC and start diagnosing. Recommended by professional mechanics on YouTube and trusted by DIYers worldwide.
Last update on 2026-03-20 / Affiliate links / Images from Amazon Product Advertising API
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