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
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