Dodge Nitro. Manual - part 691

Fig. 149: Identifying Intake Manifold Air Temperature (IAT) Sensor 
Courtesy of CHRYSLER LLC 

1. Check condition of sensor O-ring.  

2. Clean sensor mounting area at intake manifold.  

3. Lubricate sensor O-ring and sensor mounting hole in intake manifold cover with clean engine or diesel 

oil.  

4. Position sensor (1) into intake manifold.  

5. Install and tighten sensor mounting screw to 1 N.m (9 in. lbs.) torque.  

6. Connect electrical connector to sensor. 

 

2007 Dodge Nitro R/T 

2007 ENGINE Fuel System - Nitro

  

2007 HVAC

Heating & Air Conditioning - Electrical Diagnostics - Nitro 

DIAGNOSTIC CODE INDEX 

DIAGNOSTIC CODE INDEX 

DTC

Description

B1006

BI-LEVEL SWITCH REQUEST INPUT CIRCUIT PERFORMANCE

B1000

A/C SWITCH REQUEST INPUT CIRCUIT/PERFORMANCE

B1003

A/C PANEL MODE SWITCH REQUEST INPUT CIRCUIT/PERFORMANCE

B1009

RECIRCULATION SWITCH REQUEST INPUT CIRCUIT/PERFORMANCE

B100C

FLOOR MODE SWITCH REQUEST INPUT CIRCUIT PER

B100F

MIX SWITCH REQUEST INPUT CIRCUIT PER

B1012

DEFROST SWITCH REQUEST INPUT CIRCUIT/PERFORMANCE

B1015

REAR DEFROST SWITCH REQUEST INPUT CIRCUIT/PERFORMANCE

B1031

EVAPORATOR FIN TEMPERATURE SENSOR CIRCUIT LOW

B1032

EVAPORATOR FIN TEMPERATURE SENSOR CIRCUIT HIGH

B1034

INFRARED TEMPERATURE SENSOR INPUT CIRCUIT LOW

B1034

INFRARED TEMPERATURE SENSOR THERMISTOR CIRCUIT LOW

B1035

INFRARED TEMPERATURE SENSOR INPUT CIRCUIT HIGH

B1040

PANEL MODE DOOR 1 CONTROL CIRCUIT/PERFORMANCE

B1043

PANEL MODE DOOR 1 CONTROL CIRCUIT OPEN

B1044

PANEL MODE DOOR 1 TRAVEL RANGE TOO SMALL

B1045

PANEL MODE DOOR 1 TRAVEL RANGE TOO LARGE

B1058

RECIRCULATION DOOR CONTROL CIRCUIT/PERFORMANCE

B105B

RECIRCULATION DOOR CONTROL CIRCUIT OPEN (TIPM)

B105B

RECIRCULATION DOOR CONTROL CIRCUIT OPEN

B105C

RECIRCULATION DOOR TRAVEL RANGE TOO SMALL

B105D

RECIRCULATION DOOR TRAVEL RANGE TOO LARGE

B10A2

LEFT BLEND DOOR CONTROL CIRCUIT/PERFORMANCE

B10A5

LEFT BLEND DOOR CONTROL CIRCUIT OPEN

B10B1

INFRARED SENSOR THERMISTOR CIRCUIT HIGH

B10B4

CABIN HEATER 1 CONTROL CIRCUIT LOW (TIPM)

B10B8

CABIN HEATER 2 CONTROL CIRCUIT LOW (TIPM)

B10B9

CABIN HEATER 2 CONTROL CIRCUIT HIGH (TIPM)

B10EA

BLOWER MOTOR CONTROL CIRCUIT HIGH

B10EC

BLOWER MOTOR CONTROL CIRCUIT OVERCURRENT (TIPM)

B1138

CABIN HEATER 3 CONTROL CIRCUIT LOW (TIPM)

B1139

CABIN HEATER 3 CONTROL CIRCUIT HIGH (TIPM)

B1610

AMBIENT LIGHT SENSOR INPUT CIRCUIT LOW

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

HVAC - ELECTRICAL DIAGNOSTICS 

DIAGNOSIS AND TESTING 

HEATING AND AIR CONDITIONING SYSTEM 

ON-BOARD DIAGNOSTICS 

B1610

AMBIENT LIGHT SENSOR INPUT CIRCUIT PERFORMANCE

B1611

AMBIENT LIGHT SENSOR INPUT CIRCUIT HIGH

B210A

SYSTEM VOLTAGE LOW

B210B

SYSTEM VOLTAGE HIGH

B2214

(HVAC) CLIMATE CONTROL INTERNAL

B222A

VEHICLE LINE MISMATCH

U0010

CAN INTERIOR BUS

U0141

LOST COMM W/INTEGRATED POWER MODULE/FRONT CONTROL 
MODULE/TIPM

U0151

LOST COMMUNICATION WITH OCCUPANT RESTRAINT CONTROLLER 
(ORC)

U0154

LOST COMMUNICATION WITH OCCUPANT CLASSIFICATION MODULE

U0155

LOST COMMUNICATION WITH CLUSTER/CCN

U0159

LOST COMMUNICATION WITH PARKING ASSIST CONTROL MODULE

U0167

LOST COMMUNICATION WITH INTRUSION TRANSCEIVER CONTROL 
MODULE

U0168

LOST COM WITH VEHICLE SECURITY CONTROL MODULE 
(SKREEM/WCM)

U0169

LOST COMMUNICATION WITH SUNROOF CONTROL MODULE

U0181

LOST COMMUNICATION WITH HEADLAMP LEVELING TRANSLATOR

U0184

LOST COMMUNICATION WITH RADIO

U0186

LOST COMMUNICATION WITH AUDIO AMPLIFIER

U0187

LOST COMMUNICATION WITH DVD PLAYER

U0196

LOST COMMUNICATION WITH VEHICLE ENTERTAINMENT CONTROL 
MODULE

U0197

LOST COMMUNICATION WITH HANDS FREE PHONE MODULE

U0200

LOST COMMUNICATION WITH PASSENGER DOOR MODULE

U0201

LOST COMMUNICATION WITH LEFT REAR DOOR MODULE

U0202

LOST COMMUNICATION WITH RIGHT REAR DOOR MODULE

U0203

LOST COMMUNICATION WITH DOOR MODULE FRONT LEFT

U0203

LOST COMMUNICATION WITH DOOR MODULE FRONT RIGHT

U0209

LOST COMMUNICATION WITH MEMORY SEAT CONTROL MODULE

CAUTION: Do not exchange A/C Heater Controls from vehicle to vehicle. Software 

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro

  

The A/C-heater control communicates on the controller area network (CAN) IHS bus and is fully addressable 
with a scan tool. 

The A/C-heater control's primary means of fault detection is through active and stored diagnostic trouble codes 
(DTCs). Active DTCs are those which currently exist in the system. The condition causing the fault must be 
repaired in order to clear this type of DTC. Stored DTCs are those which occurred in the system since the A/C-
heater control received the last clear diagnostic info message. All DTCs must be read with a scan tool . 

The A/C-heater control's secondary means of fault detection is through system tests. These tests include the 
HVAC System Test, the A/C Cooldown Test, the Actuator Calibration Function, and for MTC Systems, the 
Actuator DTC Detection Test. Refer to SYSTEM TESTS for a detailed description of each test. 

SYSTEM TESTS 

HVAC System Test 

The HVAC System Test , provides a starting point in the diagnostic process by identifying the appropriate 
system test to perform when diagnosing a given condition or DTC. It also provides a means for testing the entire 
HVAC system by utilizing the A/C-heater control's On-Board System Tests. The On-Board System Tests can 
also assist in diagnosing stored DTCs. 

A/C Cooldown Test 

The A/C Cooldown Test: 

Is actuated with a scan tool.  

Tests A/C system performance based on evaporator temperature sensor input.  

Will fail if evaporator starting temperature is below 18°C (65°F) when initiating the test.  

Will pass if the evaporator temperature drops 11°C (20°F).  

Indicates test outcome by displaying one or more test status messages on the scan tool. These messages 
will clear after paging back out of this test function. Therefore, is it important to note all of the messages 
before doing so.  

Will cause the A/C status indicator to flash while the test is running.  

Actuator Calibration Function 

The Actuator Calibration function: 

versions differ between models and model years. Installing an A/C Heater 
Control with software that is incompatible for a given vehicle can result in 
either improper or failed HVAC system operation.

NOTE:

Always inspect the IOD fuse prior to diagnosing any heating-A/C system 
concerns. Make sure the fuse is functional and fully seated into the terminals of 
the totally integrated power module (TIPM) located in the engine compartment.

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Electrical Diagnostics - Nitro