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Wiring diagrams Section: Testing & Diagnostics

Engine Controls - System & Component Testing

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Engine Controls - Self-Diagnostics: Other Jaguar S-type I

Testing & Diagnostics 1 illustration ~16619 words

OBD-II

The ECM monitors system operation using inputs from various sensors and stores Diagnostic Trouble Codes (DTCs) to aid in fault diagnosis. System requires either one or two drive cycles before a DTC is stored. With the exception of catalyst efficiency, all inputs and outputs will have been checked by the end of an appropriate drive cycle. The catalyst monitoring test requires 3 drive cycles, which include a period of steady driving.

FREEZE-FRAME DATA

Freeze-frame data provides a snapshot of conditions present when an emission-related DTC is stored. Once one set of freeze-frame data is stored, this data will remain in memory, even if another emission-related DTC is stored, with the exception of misfire or fuel system DTCs. Once freeze-frame data for a misfire or fuel system DTC is stored, it will overwrite any previous freeze-frame data, and will not be further overwritten.

MALFUNCTION INDICATOR LIGHT (MIL)

For most DTCs, the MIL will illuminate when a fault is detected on the second drive cycle. Only catalyst-damaging misfires, certain internal ECM failures and Controller Area Network (CAN) faults will illuminate the MIL when the fault is detected on the first drive cycle. In certain circumstances, the Message Center, located near speedometer, will display fault warning information simultaneously with the MIL, or when a fault is detected on the first drive cycle.

RETRIEVING CODES

Turn ignition off. Connect Jaguar Portable Diagnostic Unit (PDU) scan tool or generic scan tool to 16-pin Data Link Connector (DLC). (Scheme 1) If using PDU, see PDU User Guide for operating instructions. If using generic scan tool, follow scan tool manufacturer's operating instructions. Check for and note any DTCs. Also check for and note Freeze Frame Data. See DIAGNOSTIC TROUBLE CODE IDENTIFICATION.

Scheme 1

Scheme 1: RETRIEVING CODES

SELF-TESTS

Note. These tests are technician initiated component self-tests using Jaguar Portable Diagnostic Unit (PDU).

KOEO

Key On Engine Off (KOEO) self-test determines if system components are operating within tolerances with the ignition on and engine stopped.

KOER

Key On Engine Running (KOER) self-test determines if system components are operating within tolerances with ignition on and engine running. KOER sets self-test DTC P1001 if a component fails to operate within the specified limits but does not activate Malfunction Indicator Light (MIL).

Adaptive Fuel Monitor Drive Cycle

Note. Observe and perform drive cycle conditions in order given.

Fuel level more than 25 percent.
Start engine and run until normal operating temperature of more than 180°F (82°C) is reached.

Catalyst Efficiency Monitor Drive Cycle

Note. Observe and perform drive cycle conditions in order given.

The catalyst efficiency monitor operates by comparing the number of downstream HO2S "swings" (crosscounts) to a given upstream HO2S "swings" while the vehicle is cruising in each of 2 AM (mass airflow, grams per second) stages. The AM and IMAF (mass airflow sensor raw voltage) values are different between V6 engines and V8 engines.

Fuel level more than 25 percent.
Connect Jaguar Portable Diagnostic Unit (PDU) so AM (mass airflow, grams per second) can be observed while driving. If AM cannot be accessed, read IMAF (mass airflow sensor raw voltage).
Start engine and run until normal operating temperature of more than 180°F (82°C) is reached.
Drive vehicle on a level road. Avoid harsh (rapid) acceleration.
Stage 1: Maintain a steady speed of approximately 50 MPH. Adjust vehicle speed as necessary to stay within Stage 1 parameters. Maintain this speed for 3 minutes.
Stage 2: Maintain a steady speed of approximately 60 MPH. Adjust vehicle speed as necessary to stay within Stage 2 parameters. Maintain this speed for 3 minutes.

Application			Specification
V6 Engine
Stage 1
AM			15.9-19.7 Grams Per Second
IMAF			3.40-3.70 Volts
Stage 2
AM			21.9-25.7 Grams Per Second
IMAF			3.90-4.25 Volts
V8 Engine
Stage 1
AM			15.9-19.7 Grams Per Second
IMAF			3.15-3.40 Volts
Stage 2
AM			21.2-24.2 Grams Per Second
IMAF			3.50-3.80 Volts

CATALYST EFFICIENCY PARAMETERS

Comprehensive Component Monitor Engine Management Drive Cycle

Note. Observe and perform drive cycle conditions in order given.

This drive cycle requires that the vehicle not be driven for 6 hours prior to completing the drive cycle. The drive cycle is the same for V6 and V8 engines except for the "idle in drive" time period. The "idle in drive" time period is longer for the V8 to allow the Air Assist Injection (AAI) check to occur.

Engine off for more than 6 hours.
Fuel level more than 25 percent.
Start engine and run until normal operating temperature of more than 180°F (82°C) is reached.
Transmission mode switch in Normal position.
Switch off all heavy electrical consumers, A/C etc.
Idle for 15 seconds.
Select 2nd gear, then accelerate slowly.
After 5 seconds, select 3rd gear, then accelerate slowly.
After 5 seconds, select 4th gear, then accelerate slowly.
After 5 seconds, select Drive, then cruise at 45 MPH for 30 seconds.
Stop vehicle and DO NOT turn the steering wheel after stopping.
Idle in Drive with foot hard on brake pedal. Idle V6 engine for 30 seconds. Idle V8 engine for 3 minutes.
From a stop, accelerate to 50 MPH at 50 percent throttle. Cruise for 30 seconds.
Stop vehicle. Idle in Drive with foot hard on brake pedal. DO NOT turn steering wheel. Idle V6 engine for 30 seconds. Idle V8 engine for 3 minutes.

Comprehensive Component Monitor Transmission Drive Cycle

Note. Observe and perform drive cycle conditions in order given.

The comprehensive component monitor transmission drive cycle will "check" all transmission system components.

Start engine.
Move transmission mode switch between Normal and Sport. Verify switch state illumination.
Move gear selector through all positions in the J gate for 5 seconds each. Verify the state illumination in each position.
Drive vehicle to bring the transmission fluid temperature up to normal operating temperature.
Stop vehicle.
Switch off all heavy electrical consumers, A/C etc.
Transmission mode switch in Normal position.
Select 2nd gear, accelerate slowly. After 5 seconds, select 3rd gear, accelerate slowly. After 5 seconds, select 4th gear, accelerate slowly. After 5 seconds, select Drive and cruise at 45 MPH for 30 seconds.
Stop vehicle.
Use the J gate to shift through all gears while accelerating briskly to 55 MPH. Cruise at 55 MPH to allow torque converter lockup to occur in 5th gear.
Stop vehicle and repeat the previous 3 steps.

Evaporative System Monitor Drive Cycle

Note. Observe and perform drive cycle conditions in order given.

The EVAP drive cycle requires that the vehicle not be driven for 6 hours prior to completing a drive cycle. A 20 minute driving period is required because the EVAP check is dependent on purge flow rate.

Engine off for more than 6 hours.
Fuel level 15-85 percent.
Ambient temperature 40-110°F (4-43°C).
Elevation no higher than 9700 ft. above sea level.
Start engine and run until normal operating temperature of more than 180°F (82°C) is reached. Idle engine for 5 minutes.
Drive vehicle on a level road.
Maintain a steady speed between 45-75 MPH for 20 minutes.
The EVAP monitor will perform a 30 second EVAP system check sometime during the 20 minute cruise period.

Heated Oxygen Sensors Monitor Drive Cycle

Note. The HO2S monitor will also be completed during the Catalyst Efficiency Monitor drive cycle. Observe and perform drive cycle conditions in order given.

Fuel level more than 25 percent.
Start engine and run until normal operating temperature of more than 180°F (82°C) is reached.
Drive vehicle on a level road. Avoid harsh (rapid) acceleration.
Maintain a stead vehicle speed between 40-60 MPH for 10 seconds.

Misfire Monitor Drive Cycle

Note. Observe and perform drive cycle conditions in order given.

Fuel level more than 25 percent.
Start engine and run until normal operating temperature of more than 180°F (82°C) is reached.
Drive vehicle on a level road. Accelerate (at 50 percent throttle) up to 65 MPH.
Release throttle and coast down to 50 MPH.
Misfire monitor will complete when acceleration is resumed.

SUMMARY

If no hard trouble codes (or only pass codes) are present, driveability symptoms exist or intermittent Diagnostic Trouble Codes (DTCs) exist, proceed to TROUBLE SHOOTING - NO CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.) or intermittent diagnostic procedure.

Monitoring Conditions

This DTC is monitored with KOEO. See KOEO under SELF-TESTS. DTC is also monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

System Default Action

None.

Possible Causes

AAI system piping restricted, disconnected or broken.
AAI valve failure.

This DTC is monitored with KOEO and KOER. See KOEO and KOER under SELF-TESTS. DTC is also monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

AAI valve B+ power supply circuit fault.
AAI valve to Powertrain Control Module (PCM) and Pulse Width Modulated (PWM) drive circuit. Check for open circuit, high resistance or short circuit.
AAI valve failure.

This DTC is monitored with KOER. See KOER under SELF-TESTS. DTC is also monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Restricted air filter.
MAF sensor to PCM sensing circuit. Check for high resistance, open circuit or intermittent short circuit to ground.
MAF sensor supply circuit. Check for open circuit or short circuit to ground.
MAF sensor failure.

None.

AAI valve B+ power supply circuit fault.
AAI valve to Powertrain Control Module (PCM) and Pulse Width Modulated (PWM) drive circuit. Check for open circuit, high resistance or short circuit.
AAI valve failure.

PCM will use an IAT default value of 100°F (38°C).

IAT sensor to PCM wiring open circuit or high resistance.
IAT sensor to PCM sensing circuit. Check for short circuit to voltage.
IAT sensor failure.

PCM will use an IAT default value of 100°F (38°C).

IAT sensor to PCM sensing circuit. Check for short circuit to ground.
IAT sensor failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Low coolant level.
Contaminated coolant.
Engine coolant thermostat failure.
CHT sensor to cylinder head poor contact (V6).
ECT or CHT sensor to PCM sensing circuit. Check for high resistance, open circuit or short circuit to voltage.
ECT or CHT sensor failure.

PCM will use an ECT default value of 215°F (102°C).

ECT sensor to PCM sensing circuit. Check for short circuit to ground.
ECT sensor failure.

PCM will use an ECT default value of 215°F (102°C).

ECT sensor to PCM wiring. Check for open circuit or high resistance.
ECT sensor to PCM sensing circuit. Check for short circuit to voltage.
ECT sensor failure.

None as long as normal TP signals are received from remaining sensors.

TP sensor to PCM sensing circuit 1 (TP sensor pin No. 10). Check for open circuit or high resistance.
TP sensor failure.

None as long as normal TP signals are received from remaining sensors.

TP sensor to PCM sensing circuit 1 (TP sensor pin No. 10). Check for short circuit to voltage.
TP sensor failure.

None as long as normal TP signals are received from remaining sensors.

TP sensor to PCM sensing circuit 1 (TP sensor pin No. 10). Check for open circuit, high resistance, short circuit to ground or voltage.
TP sensor failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Low coolant level.
Contaminated coolant.
Engine coolant thermostat failure.
CHT sensor to cylinder head poor contact (V6).
ECT or CHT sensor to PCM sensing circuit. Check for high resistance, open circuit or short circuit to voltage.
Engine cooling fan stuck on high speed.
Above normal air flow through engine compartment due to accident damage and/or missing panels.

DTC is monitored during Heated Oxygen Sensors Monitor drive cycle. See HEATED OXYGEN SENSORS MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

HO2S disconnected.
HO2S to PCM sensing circuit. Check for open circuit.
HO2S short circuit to ground.
HO2S failure.

This DTC is monitored with KOER. See KOER under SELF-TESTS. DTC is also monitored during Heated Oxygen Sensors Monitor drive cycle. See HEATED OXYGEN SENSORS MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

HO2S to PCM sensing circuit. Check for short circuit to voltage.
HO2S reference ground circuit (HO2S to splice). Check for open circuit.
HO2S failure.

DTC is monitored during Heated Oxygen Sensors Monitor drive cycle. See HEATED OXYGEN SENSORS MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Engine misfire.
HO2S disconnected.
HO2S mechanical damage.
HO2S to PCM wiring. Check for an intermittent open circuit.
HO2S to PCM sensing circuit. Check for short circuit to voltage.
HO2S short circuit to ground.
HO2S reference ground circuit (HO2S to splice). Check for open circuit.
HO2S heater circuit fault.
Exhaust leak.
Low exhaust temperature.
Fuel injector flow partially restricted.
Catalyst efficiency decrease.
HO2S failure.

This DTC is monitored with KOEO and KOER. See KOEO and KOER under SELF-TESTS. DTC is also monitored during Heated Oxygen Sensors Monitor drive cycle. See HEATED OXYGEN SENSORS MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

HO2S disconnected.
HO2S heater power supply. Check for open circuit.
HO2S heater to PCM wiring. Check for open circuit.
HO2S heater failure.

DTC is monitored during Heated Oxygen Sensors Monitor drive cycle. See HEATED OXYGEN SENSORS MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

HO2S sensing circuit. Check for open circuit, high resistance short circuit to ground or voltage.
HO2S heater failure.

None.

HO2S to PCM sensing circuit. Check for short circuit to voltage.
HO2S reference ground circuit (HO2S to splice). Check for open circuit.
HO2S failure.

None.

HO2S disconnected.
HO2S heater power supply. Check for open circuit.
HO2S heater to PCM wiring. Check for open circuit.
HO2S heater failure.

DTC is monitored during Heated Oxygen Sensors Monitor drive cycle. See HEATED OXYGEN SENSORS MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

HO2S disconnected.
HO2S to PCM sensing circuit. Check for open circuit.
HO2S short circuit to ground.
HO2S failure.

None.

HO2S to PCM sensing circuit. Check for short circuit to voltage.
HO2S reference ground circuit (HO2S to splice). Check for open circuit.
HO2S failure.

DTC is monitored during Heated Oxygen Sensors Monitor drive cycle. See HEATED OXYGEN SENSORS MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Engine misfire.
HO2S disconnected.
HO2S mechanical damage.
HO2S to PCM wiring. Check for an intermittent open circuit.
HO2S to PCM sensing circuit. Check for short circuit to voltage.
HO2S short circuit to ground.
HO2S reference ground circuit (HO2S to splice). Check for open circuit.
HO2S heater circuit fault.
Exhaust leak.
Low exhaust temperature.
Fuel injector flow partially restricted.
Catalyst efficiency decrease.
HO2S failure.

None.

HO2S disconnected.
HO2S heater power supply. Check for open circuit.
HO2S heater to PCM wiring. Check for open circuit.
HO2S heater failure.

DTC is monitored during Heated Oxygen Sensors Monitor drive cycle. See HEATED OXYGEN SENSORS MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

HO2S sensing circuit. Check for open circuit, high resistance short circuit to ground or voltage.
HO2S heater failure.

None.

HO2S to PCM sensing circuit. Check for short circuit to voltage.
HO2S reference ground circuit (HO2S to splice). Check for open circuit.
HO2S failure.

None.

HO2S disconnected.
HO2S heater power supply. Check for open circuit.
HO2S heater to PCM wiring. Check for open circuit.
HO2S heater failure.

DTC is monitored during Adaptive Fuel Monitor drive cycle. See ADAPTIVE FUEL MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Engine misfire.
Air intake leak between MAF sensor and throttle.
Fuel filter or fuel system restriction.
Fuel injector restriction.
Fuel pressure sensor failure (low fuel pressure).
Low fuel pump output.
HO2 sensors (Bank 1, upstream 1 and downstream 2) wiring harness fault.
Exhaust leak (before catalyst).
PCM receiving incorrect signal from one or more of the following components: ECT (V8) or CHT (V6) sensor, MAF sensor, IAT sensor, Injection Pressure (IP) sensor, Engine Fuel Temperature (EFT) sensor, TP sensors and Throttle Actuator Control Module (TACM).

DTC is monitored during Adaptive Fuel Monitor drive cycle. See ADAPTIVE FUEL MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Restricted air filter.
Leaking fuel injector(s).
Fuel pressure sensor failure (high fuel pressure).
PCM receiving incorrect signal from one or more of the following components: ECT (V8) or CHT (V6) sensor, MAF sensor, IAT sensor, Injection Pressure (IP) sensor, Engine Fuel Temperature (EFT) sensor, TP sensors and Throttle Actuator Control Module (TACM).

DTC is monitored during Adaptive Fuel Monitor drive cycle. See ADAPTIVE FUEL MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Engine misfire.
Air intake leak between MAF sensor and throttle.
Fuel filter or fuel system restriction.
Fuel injector restriction.
Fuel pressure sensor failure (low fuel pressure).
Low fuel pump output.
HO2 sensors (Bank 1, upstream 1 and downstream 2) wiring harness fault.
Exhaust leak (before catalyst).
PCM receiving incorrect signal from one or more of the following components: ECT (V8) or CHT (V6) sensor, MAF sensor, IAT sensor, Injection Pressure (IP) sensor, Engine Fuel Temperature (EFT) sensor, TP sensors and Throttle Actuator Control Module (TACM).

DTC is monitored during Adaptive Fuel Monitor drive cycle. See ADAPTIVE FUEL MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Restricted air filter.
Leaking fuel injector(s).
Fuel pressure sensor failure (high fuel pressure).
PCM receiving incorrect signal from one or more of the following components: ECT (V8) or CHT (V6) sensor, MAF sensor, IAT sensor, Injection Pressure (IP) sensor, Engine Fuel Temperature (EFT) sensor, TP sensors and Throttle Actuator Control Module (TACM).

None.

EFT sensor disconnected.
EFT sensor to PCM sensing circuit. Check for high resistance, open circuit, short circuit to ground or voltage.
EFT sensor failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

IP sensor reference ground circuit (to splice). Check for open circuit.
IP sensor reference voltage circuit (to splice). Check for open circuit.
IP sensor to PCM sensing circuit. Check for open circuit, high resistance, short circuit to ground or voltage.
IP sensor failure.

None.

IP sensor reference voltage circuit (to splice). Check for open circuit.
IP sensor to PCM sensing circuit. Check for open circuit, high resistance or short circuit to ground.
IP sensor failure.

None.

IP sensor reference ground circuit (to splice). Check for an open circuit.
IP sensor to PCM sensing circuit. Check for short circuit to ground.
IP sensor failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will use a CHT (V6) or ECT (V8) sensor default value.

EOT sensor to PCM sensing circuit. Check for high resistance when hot.
EOT sensor to PCM sensing circuit. Check for intermittent high resistance.
EOT sensor failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Injector disconnected.
Injector harness wiring. Check for open or short circuit.
Injector failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Injector disconnected.
Injector harness wiring. Check for open or short circuit.
Injector failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Injector disconnected.
Injector harness wiring. Check for open or short circuit.
Injector failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Injector disconnected.
Injector harness wiring. Check for open or short circuit.
Injector failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Injector disconnected.
Injector harness wiring. Check for open or short circuit.
Injector failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Injector disconnected.
Injector harness wiring. Check for open or short circuit.
Injector failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Injector disconnected.
Injector harness wiring. Check for open or short circuit.
Injector failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Injector disconnected.
Injector harness wiring. Check for open or short circuit.
Injector failure.

None as long as normal TP signals are received from remaining sensors.

TP sensor to PCM sensing circuit 2 (TP sensor pin No. 1). Check for open circuit or high resistance.
TP sensor failure.

None as long as normal TP signals are received from remaining sensors.

TP sensor to PCM sensing circuit 2 (TP sensor pin No. 1). Check for short circuit to voltage.
TP sensor failure.

None as long as normal TP signals are received from remaining sensors.

TP sensor to PCM sensing circuit 2 (TP sensor pin No. 1) intermittent. Check for open circuit, high resistance, short circuit to ground or voltage.
TP sensor failure.

None as long as normal TP signals are received from remaining sensors.

TP sensor to PCM sensing circuit 3 (TP sensor pin No. 2). Check for open circuit or high resistance.
TP sensor failure.

None as long as normal TP signals are received from remaining sensors.

TP sensor to PCM sensing circuit 3 (TP sensor pin No. 2). Check for short circuit to voltage.
TP sensor failure.

None as long as normal TP signals are received from remaining sensors.

TP sensor to PCM sensing circuit 3 (TP sensor pin No. 2) intermittent. Check for open circuit, high resistance, short circuit to ground or voltage.
TP sensor failure.

DTC is monitored during Misfire Monitor drive cycle. See Misfire Monitor Drive Cycle under OBD DIAGNOSTIC MONITORS.

None.

Cylinder compression low.
Worn camshaft/broken valve spring(s).
Fuel delivery pressure low or high.
Fuel injector(s) blocked or leaking.
Fuel injector(s) continuously open.
Fuel contamination.
Fuel injector circuit fault(s). Injector DTCs also flagged.
Spark plug failure, fouled or incorrect gap.
ECM to ignition module primary circuit fault (cylinder misfire DTC is also set).
Ignition coil failure.

DTC is monitored during Misfire Monitor drive cycle. See Misfire Monitor Drive Cycle under OBD DIAGNOSTIC MONITORS.

None.

Cylinder compression low.
Worn camshaft/broken valve spring(s).
Fuel delivery pressure low or high.
Fuel injector(s) blocked or leaking.
Fuel injector(s) continuously open.
Fuel contamination.
Fuel injector circuit fault(s). Injector DTCs also flagged.
Spark plug failure, fouled or incorrect gap.
ECM to ignition module primary circuit fault (cylinder misfire DTC is also set).
Ignition coil failure.

DTC is monitored during Misfire Monitor drive cycle. See Misfire Monitor Drive Cycle under OBD DIAGNOSTIC MONITORS.

None.

Cylinder compression low.
Worn camshaft/broken valve spring(s).
Fuel delivery pressure low or high.
Fuel injector(s) blocked or leaking.
Fuel injector(s) continuously open.
Fuel contamination.
Fuel injector circuit fault(s). Injector DTCs also flagged.
Spark plug failure, fouled or incorrect gap.
ECM to ignition module primary circuit fault (cylinder misfire DTC is also set).
Ignition coil failure.

DTC is monitored during Misfire Monitor drive cycle. See Misfire Monitor Drive Cycle under OBD DIAGNOSTIC MONITORS.

None.

Cylinder compression low.
Worn camshaft/broken valve spring(s).
Fuel delivery pressure low or high.
Fuel injector(s) blocked or leaking.
Fuel injector(s) continuously open.
Fuel contamination.
Fuel injector circuit fault(s). Injector DTCs also flagged.
Spark plug failure, fouled or incorrect gap.
ECM to ignition module primary circuit fault (cylinder misfire DTC is also set).
Ignition coil failure.

DTC is monitored during Misfire Monitor drive cycle. See Misfire Monitor Drive Cycle under OBD DIAGNOSTIC MONITORS.

None.

Cylinder compression low.
Worn camshaft/broken valve spring(s).
Fuel delivery pressure low or high.
Fuel injector(s) blocked or leaking.
Fuel injector(s) continuously open.
Fuel contamination.
Fuel injector circuit fault(s). Injector DTCs also flagged.
Spark plug failure, fouled or incorrect gap.
ECM to ignition module primary circuit fault (cylinder misfire DTC is also set).
Ignition coil failure.

DTC is monitored during Misfire Monitor drive cycle. See Misfire Monitor Drive Cycle under OBD DIAGNOSTIC MONITORS.

None.

Cylinder compression low.
Worn camshaft/broken valve spring(s).
Fuel delivery pressure low or high.
Fuel injector(s) blocked or leaking.
Fuel injector(s) continuously open.
Fuel contamination.
Fuel injector circuit fault(s). Injector DTCs also flagged.
Spark plug failure, fouled or incorrect gap.
ECM to ignition module primary circuit fault (cylinder misfire DTC is also set).
Ignition coil failure.

DTC is monitored during Misfire Monitor drive cycle. See Misfire Monitor Drive Cycle under OBD DIAGNOSTIC MONITORS.

None.

Cylinder compression low.
Worn camshaft/broken valve spring(s).
Fuel delivery pressure low or high.
Fuel injector(s) blocked or leaking.
Fuel injector(s) continuously open.
Fuel contamination.
Fuel injector circuit fault(s). Injector DTCs also flagged.
Spark plug failure, fouled or incorrect gap.
ECM to ignition module primary circuit fault (cylinder misfire DTC is also set).
Ignition coil failure.

DTC is monitored during Misfire Monitor drive cycle. See Misfire Monitor Drive Cycle under OBD DIAGNOSTIC MONITORS.

None.

Cylinder compression low.
Worn camshaft/broken valve spring(s).
Fuel delivery pressure low or high.
Fuel injector(s) blocked or leaking.
Fuel injector(s) continuously open.
Fuel contamination.
Fuel injector circuit fault(s). Injector DTCs also flagged.
Spark plug failure, fouled or incorrect gap.
ECM to ignition module primary circuit fault (cylinder misfire DTC is also set).
Ignition coil failure.

DTC is monitored during Misfire Monitor drive cycle. See Misfire Monitor Drive Cycle under OBD DIAGNOSTIC MONITORS.

None.

Cylinder compression low.
Worn camshaft/broken valve spring(s).
Fuel delivery pressure low or high.
Fuel injector(s) blocked or leaking.
Fuel injector(s) continuously open.
Fuel contamination.
Fuel injector circuit fault(s). Injector DTCs also flagged.
Spark plug failure, fouled or incorrect gap.
ECM to ignition module primary circuit fault (cylinder misfire DTC is also set).
Ignition coil failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None. The engine will shut off.

CKP sensor disconnected.
CKP sensor gap incorrect.
CKP sensor reluctor damaged teeth.
Foreign matter on CKP sensor face (V8 engine).
Foreign matter on CKP sensor (on drive plate) (V8 engine).
CKP sensing circuit. Check for open circuit, high resistance, short circuit to ground or voltage.
CKP sensor failure.

None.

Poor sensor contact with the cylinder block.
Bank 1 KS to PCM sensing circuit (KS pin No. 2). Check for open circuit, high resistance, short circuit to ground or voltage.
Bank 1 KS to PCM reference ground circuit (KS pin No. 1). Check for open circuit, high resistance or short circuit to voltage.
Bank 1 KS failure.

None.

Poor sensor contact with the cylinder block.
Bank 2 KS to PCM sensing circuit (KS pin No. 2). Check for open circuit, high resistance, short circuit to ground or voltage.
Bank 2 KS to PCM reference ground circuit (KS pin No. 1). Check for open circuit, high resistance or short circuit to voltage.
Bank 2 KS failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will inhibit Variable Valve Timing (VVT). Decreased engine performance will be noticed.

Bank 1 CMP sensor disconnected.
Bank 1 CMP sensor gap incorrect (foreign matter on sensor face).
Bank 1 CMP sensor sensing circuit. Check for open circuit, short circuit to ground or short circuit to voltage.
Bank 1 CMP sensor reference ground circuit (to splice). Check for open circuit.
Bank 1 CMP sensor failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will inhibit Variable Valve Timing (VVT). Decreased engine performance will be noticed.

Bank 2 CMP sensor disconnected.
Bank 2 CMP sensor gap incorrect (foreign matter on sensor face).
Bank 2 CMP sensor sensing circuit. Check for open circuit, short circuit to ground or short circuit to voltage.
Bank 2 CMP sensor reference ground circuit (to splice). Check for open circuit.
Bank 2 CMP sensor failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Ignition coils power supply. Check for open circuit or short circuit.
Ignition suppression capacitor(s) failure.
Incorrect CKP sensor air gap.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Ignition coil disconnected.
PCM to ignition coil primary circuit. Check for open circuit, high resistance or short circuit to ground.
Ignition coil failure. If other individual ignition coil primary circuit DTC's are flagged, check the remaining possible causes.
Ignition coils power supply. Check for open circuit or short circuit.
Ignition suppression capacitor(s) failure.
Incorrect CKP sensor air gap.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Ignition coil disconnected.
PCM to ignition coil primary circuit. Check for open circuit, high resistance or short circuit to ground.
Ignition coil failure. If other individual ignition coil primary circuit DTC's are flagged, check the remaining possible causes.
Ignition coils power supply. Check for open circuit or short circuit.
Ignition suppression capacitor(s) failure.
Incorrect CKP sensor air gap.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Ignition coil disconnected.
PCM to ignition coil primary circuit. Check for open circuit, high resistance or short circuit to ground.
Ignition coil failure. If other individual ignition coil primary circuit DTC's are flagged, check the remaining possible causes.
Ignition coils power supply. Check for open circuit or short circuit.
Ignition suppression capacitor(s) failure.
Incorrect CKP sensor air gap.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Ignition coil disconnected.
PCM to ignition coil primary circuit. Check for open circuit, high resistance or short circuit to ground.
Ignition coil failure. If other individual ignition coil primary circuit DTC's are flagged, check the remaining possible causes.
Ignition coils power supply. Check for open circuit or short circuit.
Ignition suppression capacitor(s) failure.
Incorrect CKP sensor air gap.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Ignition coil disconnected.
PCM to ignition coil primary circuit. Check for open circuit, high resistance or short circuit to ground.
Ignition coil failure. If other individual ignition coil primary circuit DTC's are flagged, check the remaining possible causes.
Ignition coils power supply. Check for open circuit or short circuit.
Ignition suppression capacitor(s) failure.
Incorrect CKP sensor air gap.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Ignition coil disconnected.
PCM to ignition coil primary circuit. Check for open circuit, high resistance or short circuit to ground.
Ignition coil failure. If other individual ignition coil primary circuit DTC's are flagged, check the remaining possible causes.
Ignition coils power supply. Check for open circuit or short circuit.
Ignition suppression capacitor(s) failure.
Incorrect CKP sensor air gap.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Ignition coil disconnected.
PCM to ignition coil primary circuit. Check for open circuit, high resistance or short circuit to ground.
Ignition coil failure. If other individual ignition coil primary circuit DTC's are flagged, check the remaining possible causes.
Ignition coils power supply. Check for open circuit or short circuit.
Ignition suppression capacitor(s) failure.
Incorrect CKP sensor air gap.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Ignition coil disconnected.
PCM to ignition coil primary circuit. Check for open circuit, high resistance or short circuit to ground.
Ignition coil failure. If other individual ignition coil primary circuit DTC's are flagged, check the remaining possible causes.
Ignition coils power supply. Check for open circuit or short circuit.
Ignition suppression capacitor(s) failure.
Incorrect CKP sensor air gap.

DTC is monitored during Catalyst Efficiency Monitor drive cycle. See CATALYST EFFICIENCY MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Bank 1 HO2 sensor(s) disconnected.
Bank 1 HO2 sensor(s) to PCM wiring fault.
Bank 1 HO2 sensor(s) heater to PCM wiring fault.
Bank 1 HO2 sensor(s) heater failure. See «DTC P0135»(ref-11918-S27139907332001051000000) and «DTC P0141»(ref-11918-S15326191342001051100000) under DIAGNOSTIC TROUBLE CODE IDENTIFICATION.
HO2S (Bank 1, upstream 1) failure.
HO2S (Bank 1, downstream 2) failure. See «DTC P0136»(ref-11918-S01523881032001051100000) under DIAGNOSTIC TROUBLE CODE IDENTIFICATION.
Bank 1 catalyst failure.

DTC is monitored during Catalyst Efficiency Monitor drive cycle. See CATALYST EFFICIENCY MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Bank 2 HO2 sensor(s) disconnected.
Bank 2 HO2 sensor(s) to PCM wiring fault.
Bank 2 HO2 sensor(s) heater to PCM wiring fault.
Bank 2 HO2 sensor(s) heater failure. See «DTC P0151, P0152, P0153, P0155, P0430, P1150, P1151 OR P1152: HO2S CIRCUIT(BANK 2, UPSTREAM 1)»(ref-11918-S40349517262000120400000) and «DTC P0156, P0158, P0161, P0430, P1157 OR P1158: HO2S CIRCUIT(BANK 2, DOWNSTREAM 2)»(ref-11918-S26218570052000120400000) under DIAGNOSTIC TROUBLE CODE IDENTIFICATION.
HO2S (Bank 2, upstream 1) failure.
HO2S (Bank 2, downstream 2) failure. See «DTC P0156, P0158, P0161, P0430, P1157 OR P1158: HO2S CIRCUIT(BANK 2, DOWNSTREAM 2)»(ref-11918-S26218570052000120400000) under DIAGNOSTIC TROUBLE CODE IDENTIFICATION.
Bank 2 catalyst failure.

DTC is monitored during Evaporative System Monitor drive cycle. See EVAPORATIVE SYSTEM MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Fuel cap seal defective.
EVAP system leak (canister damage, line damage).
EVAP canister purge valve to PCM drive circuit. Check for open circuit, short circuit or high resistance.
EVAP canister purge valve power supply circuit. Check for open circuit.
EVAP canister purge valve to engine purge pipe damaged, blocked or leaking.
EVAP canister purge valve vacuum hose leak or blockage.
EVAP canister purge failure.
Fuel tank leak.

This DTC is monitored with KOEO and KOER. See KOEO and KOER under SELF-TESTS. DTC is also monitored during Evaporative System Monitor drive cycle. See EVAPORATIVE SYSTEM MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

EVAP canister purge valve to PCM drive circuit. Check for open circuit, short circuit or high resistance.
EVAP canister purge valve power supply circuit. Check for open circuit.
EVAP canister purge failure.

DTC is monitored during Evaporative System Monitor drive cycle. See EVAPORATIVE SYSTEM MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

FTP sensor disconnected.
FTP sensor to PCM sense circuit. Check for open circuit, short circuit to ground or short circuit to B+.
FTP sensor to PCM reference voltage circuit. Check for open circuit or short circuit to ground.
FTP sensor to PCM wiring (supply circuit, sense circuit, reference ground). Check these circuits for short circuit to each other.
FTP sensor failure.

None.

FTP sensor disconnected.
FTP sensor to PCM sense circuit. Check for open circuit, short circuit to ground or short circuit to B+.
FTP sensor to PCM reference voltage circuit. Check for open circuit or short circuit to ground.
FTP sensor failure.

None.

FTP sensor to PCM wiring (supply circuit, sense circuit, reference ground). Check these circuits for short circuit to each other.
FTP sensor to PCM sense circuit. Check for short circuit to B+.
FTP sensor to PCM reference ground circuit. Check for open circuit.
FTP sensor failure.

DTC is monitored during Evaporative System Monitor drive cycle. See EVAPORATIVE SYSTEM MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Fuel cap missing.
Fuel cap seal defective.
Fuel tank overfilled.
EVAP system leak (canister damage, line damage).
EVAP canister purge valve power supply circuit. Check for open circuit.
EVAP canister purge valve to engine purge pipe damaged, blocked or leaking.
EVAP canister purge failure.
FTP sensor not responding to pressure changes (restricted/failure).
Fuel tank leak.

DTC is monitored during Evaporative System Monitor drive cycle. See EVAPORATIVE SYSTEM MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Fuel cap seal defective.
EVAP system leak (canister damage, line damage).
EVAP canister purge valve to PCM drive circuit. Check for open circuit, short circuit or high resistance.
EVAP canister purge valve power supply circuit. Check for open circuit.
EVAP canister purge valve to engine purge pipe damaged, blocked or leaking.
EVAP valve operating vacuum hose leak or blockage.
EVAP canister purge failure.
Fuel tank leak.

None.

Fuel level sensor(s) to Rear Electronic Control Module (RECM) sense circuits. Check for open circuit, high resistance or short circuit.
RECM/PCM Standard Corporate Protocol (SCP) communication fault (U code set).
Fuel level sensor(s) failure.

Engine running and vehicle moving.

None.

Rear wheel speed sensor(s) circuit(s). Check for open circuit, high resistance or short circuit.
Rear wheel speed sensor(s) failure.
Front wheel speed sensor(s) circuit(s). Check for open circuit, high resistance or short circuit.
Front wheel speed sensor(s) failure.
Instrument pack malfunction.
Standard Corporate Protocol (SCP) failure (code U1039 set).

Engine running and vehicle moving.

None.

Wheel speed sensor(s) circuit(s) electrical noise.
Instrument pack malfunction.
Standard Corporate Protocol (SCP) failure (code U1039 set).

None.

Engine air filter restricted or defective.
Engine air intake restricted or damaged.
PCM/Throttle Actuator Control Module (TACM) circuit fault.
TACM failure.
Throttle failure.

None.

Possible Cause

PCM failure.

This DTC is monitored with KOEO. See KOEO under SELF-TESTS.

None.

PCM failure.

This DTC is monitored with KOEO. See KOEO under SELF-TESTS.

None.

PCM failure.

This DTC is monitored with KOER. See KOER under SELF-TESTS. DTC is also monitored with engine running and brake pedal operated.

PCM will inhibit speed control.

Brake switch to PCM signal circuit. Check for open circuit, high resistance or short circuit.
Brake switch power supply circuit. Check for open circuit or short circuit.
Brake switch signal circuit (gearshift interlock, Anti-lock Brake System/Traction Control (ABS/TC), stop lights). Check for open circuit or short circuit
Brake switch failure.

This DTC is monitored with KOEO and KOER. See KOEO and KOER under SELF-TESTS. DTC is also monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM defaults to DRIVE to maintain all 5 gears. "J" gate gear selected illumination extinguished. Harsh shifts will be present.

Range sensor incorrect alignment.
Gear selector cable incorrectly adjusted.
Range sensor circuit. Check for intermittent open circuit or open circuit.
Range sensor failure.

PCM defaults to DRIVE to maintain all 5 gears. "J" gate gear selected illumination extinguished. Harsh shifts will be present.

Range sensor circuit. Check for open circuit.
Range sensor disconnected.
Range sensor failure.

PCM will calculate the TFT from Cylinder Head Temperature (CHT) sensor (V6) or Engine Coolant Temperature (ECT) sensor (V8). Traction control will be inhibited. Firm shifts will be present.

TFT sensor sense circuit. Check for short circuit to ground.
TFT sensor failure.

PCM will calculate the TFT from Cylinder Head Temperature (CHT) sensor (V6) or Engine Coolant Temperature (ECT) sensor (V8). Traction control will be inhibited. Firm shifts will be present.

TFT sensor sense circuit. Check for open circuit, high resistance or short circuit to voltage.
TFT sensor failure.

This DTC is monitored with KOER. See KOER under SELF-TESTS. DTC is also monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM defaults to speed calculated from output speed sensor. Harsh Torque Converter Clutch (TCC) shifts will be present.

Turbine speed sensor circuit. Check for short circuit, high resistance or open circuit.
Turbine speed sensor failure.

PCM defaults to speed calculated from output speed sensor. Harsh Torque Converter Clutch (TCC) shifts will be present.

Turbine speed sensor circuit. Check for open circuit.
Turbine speed sensor failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM defaults to speed calculated from output speed sensor. Harsh Torque Converter Clutch (TCC) shifts will be present.

Turbine speed sensor sense circuit. Check for short circuit or open circuit.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM defaults to speed calculated from Standard Corporate Protocol (SCP) vehicle speed message.

Output speed sensor circuit. Check for short circuit, high resistance or open circuit.
Output speed sensor failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will calculate speed from Standard Corporate Protocol (SCP) vehicle speed message. Traction control will be inhibited. Shifts will have an abnormal schedule.

Output speed sensor sense circuit. Check for short circuit or open circuit.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will calculate speed from Standard Corporate Protocol (SCP) vehicle speed message. Traction control will be inhibited. Shifts will have an abnormal schedule.

Output speed sensor sense circuit. Check for short circuit, high resistance or open circuit.
Output speed sensor failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will default to inhibiting first gear. Traction control will be inhibited.

Shift solenoid circuit fault (shift solenoid DTC's will also be set).
Pressure control solenoid circuit fault (pressure control solenoid DTC's will also be set).
Engine speed signal malfunction (CKP sensor DTC's will also be set).
Transmission mechanical failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will default to inhibiting second gear. Traction control will be inhibited.

Shift solenoid circuit fault (shift solenoid DTC's will also be set).
Pressure control solenoid circuit fault (pressure control solenoid DTC's will also be set).
Engine speed signal malfunction (CKP sensor DTC's will also be set).
Transmission mechanical failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will default to inhibiting third gear. Traction control will be inhibited.

Shift solenoid circuit fault (shift solenoid DTC's will also be set).
Pressure control solenoid circuit fault (pressure control solenoid DTC's will also be set).
Engine speed signal malfunction (CKP sensor DTC's will also be set).
Transmission mechanical failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will default to inhibiting fourth gear. Traction control will be inhibited.

Shift solenoid circuit fault (shift solenoid DTC's will also be set).
Pressure control solenoid circuit fault (pressure control solenoid DTC's will also be set).
Engine speed signal malfunction (CKP sensor DTC's will also be set).
Transmission mechanical failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will default to inhibiting fifth gear. Traction control will be inhibited.

Shift solenoid circuit fault (shift solenoid DTC's will also be set).
Pressure control solenoid circuit fault (pressure control solenoid DTC's will also be set).
Engine speed signal malfunction (CKP sensor DTC's will also be set).
Transmission mechanical failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

Transmission will attempt to lock-up. Traction control will be inhibited.

TCC solenoid circuit fault (TCC solenoid DTC's will also be set).
Pressure control solenoid circuit fault (pressure control solenoid DTC's will also be set).
Transmission mechanical failure.

PCM will inhibit TCC lock-up.

TCC drive circuit. Check for open circuit, high resistance or short circuit to ground.
TCC solenoid failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will default to 1st, 2nd, 4th, 5th pattern.

Pressure control solenoid 1 drive circuit. Check for short circuit to ground or open circuit.
Pressure control solenoid 1 failure.

If fault is a short circuit to B+ or an open circuit, shift pattern will be 3rd, 2nd, 3rd, 4th, 5th. If fault is a short circuit to ground, shift pattern will be 1st, 2nd, 3rd. Regardless of shift pattern, shifts will be harsh.

Shift solenoid 1 drive circuit. Check for short circuit to ground or B+, high resistance or open circuit.
Shift solenoid 1 failure.

If fault is a short circuit to B+ or an open circuit, shift pattern will be 1st, 2nd, 4th, 5th. If fault is a short circuit to ground, shift pattern will be 3rd, 2nd, 3rd, 4th, 5th. Regardless of shift pattern, shifts will be harsh.

Shift solenoid 2 drive circuit. Check for short circuit to ground or B+, high resistance or open circuit.
Shift solenoid 2 failure.

If fault is a short circuit to B+ or an open circuit, shift pattern will be 1st, 3rd, 4th, 5th. If fault is a short circuit to ground, shift pattern will be normal. Regardless of shift pattern, shifts will be harsh.

Shift solenoid 3 drive circuit. Check for short circuit to ground or B+, high resistance or open circuit.
Shift solenoid 3 failure.

When transmission is in Drive, PCM default is a normal shift pattern. When transmission is being shifted manually, PCM default is gears 2, 3 and 4 will be inhibited. In both PCM default modes, transmission will have harsh shifts.

Shift solenoid 4 drive circuit. Check for short circuit to ground or B+, high resistance or open circuit.
Shift solenoid 4 failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM default is 1st, 1st, 3rd, 4th, 4th shift pattern.

Pressure control solenoid 2 drive circuit. Check for short circuit to ground or open circuit.
Pressure control solenoid 2 failure.

PCM default is 1st, 1st, 3rd, 4th, 4th shift pattern.

Pressure control solenoid 2 drive circuit. Check for intermittent short circuit to ground.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM default is one-way clutch test inhibited. Traction control is inhibited. Transmission will have harsh shifts.

Intermediate speed sensor circuit. Check for short circuit, high resistance or open circuit.
Intermediate speed sensor failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM default is one-way clutch test inhibited. Transmission will have harsh shifts.

Intermediate speed sensor sense circuit intermittent. Check for short circuit, high resistance or open circuit.
Intermediate speed sensor failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM default is 1st, 2nd, 3rd gears only.

Pressure control solenoid 3 drive circuit. Check for short circuit to ground or open circuit.
Pressure control solenoid 3 failure.

Traction control is inhibited. Transmission will have harsh shifts.

Pressure control solenoid 3 drive circuit. Check for short circuit to B+.
Pressure control solenoid 3 failure.
Transmission mechanical failure (other DTC's may be set).

PCM default is 1st, 2nd, 3rd gears only. Transmission will have harsh shifts.

Pressure control solenoid 3 drive circuit. Check for short circuit to ground.
Pressure control solenoid 3 failure.
Transmission mechanical failure (other DTC's may be set).

PCM default is 1st, 2nd, 3rd gears only. Transmission will have harsh shifts.

Pressure control solenoid 3 drive circuit. Check for intermittent short circuit to ground.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

PCM/"J" gate illumination circuit(s). Check for short circuit or open circuit (PCM pins No. FH1-7, 8 and 9).

PCM default is manual 2nd, 3rd inhibited.

Pressure switch to PCM signal circuit. Check for short circuit, high resistance or open circuit.
Pressure switch transmission internal circuit. Check for short circuit, high resistance or open circuit.
Pressure switch failure.

This DTC is monitored with KOEO and KOER. See KOEO and KOER under SELF-TESTS. DTC is also monitored when vehicle is driven.

None.

Note. If DTC P1000 is set after DTCs have been cleared, all 6 OBD II diagnostic monitor drive cycles have not been completed. See OBD DIAGNOSTIC MONITORS .

This DTC is monitored with KOER. See KOER under SELF-TESTS.

None.

Note. If DTC P1000 is set after DTCs have been cleared, all 6 OBD II diagnostic monitor drive cycles have not been completed. See OBD DIAGNOSTIC MONITORS .

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

MAF sensor to PCM sensing circuit intermittent. Check for open circuit, high resistance or short circuit.
MAF sensor supply circuit intermittent. Check for open circuit or short circuit.
MAF sensor failure.

This DTC is monitored with KOEO and KOER. See KOEO and KOER under SELF-TESTS.

None.

MAF sensor to PCM sensing circuit intermittent. Check for open circuit, high resistance or short circuit.
MAF sensor supply circuit. Check for open circuit or short circuit.
MAF sensor failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will use an IAT default value of 100°F (38°C).

IAT sensor to PCM sensing circuit intermittent. Check for open circuit, high resistance or short circuit.
IAT sensor reference ground circuit (to splice). Check for an intermittent open circuit.
IAT sensor failure.

This DTC is monitored with KOEO and KOER. See KOEO and KOER under SELF-TESTS.

PCM will use an ECT default value of 215°F (102°C).

IAT sensor to PCM sensing circuit intermittent. Check for open circuit, high resistance or short circuit.
IAT sensor reference ground circuit (to splice). Check for open circuit.
IAT sensor failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will use an ECT (V8) or CHT (V6) sensor default value of 215°F (102°C).

ECT (V8) or CHT (V6) sensing circuit intermittent. Check for open circuit, high resistance or short circuit.
ECT (V8) or CHT (V6) sensor reference ground circuit (to splice). Check for an intermittent open circuit.
ECT (V8) or CHT (V6) sensor failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None (as long as normal TP signals are received).

TP sensors to PCM wiring harness fault.
MAF sensor to PCM wiring harness fault.
TP sensor(s) failure.
MAF sensor failure.

None (as long as normal APP signals are received from remaining sensors).

APP sensor to PCM sensing circuit 1 (sensor pin No. 5). Check for open circuit or high resistance.
APP sensor reference voltage (sensor pin No. 10). Check for open circuit.
APP sensor failure.

None (as long as normal APP signals are received from remaining sensors).

APP sensor to PCM sensing circuit 1 (sensor pin No. 5). Check for short circuit to voltage.
APP sensor reference voltage (sensor pin No. 9). Check for open circuit.
APP sensor failure.

This DTC is monitored with KOEO and KOER. See KOEO and KOER under SELF-TESTS.

None (as long as normal TP signals are received).

Accelerator pedal pressed during self-test.
One or more individual TP sensors to PCM sensing circuits. Check for open circuit, high resistance, short circuit to ground or voltage.
TP sensor failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

One or more individual TP sensors to PCM sensing circuits. Check for open circuit, high resistance, short circuit to ground or voltage.
TP sensor failure.

None.

Engine not at normal operating temperature.
Exhaust system leak or failure.

None.

Upstream HO2 sensors swapped from bank to bank.
Upstream HO2 sensors to PCM wiring fault.

None.

Downstream HO2 sensors swapped from bank to bank.
Downstream HO2 sensors to PCM wiring fault.

DTC is monitored during Heated Oxygen Sensors Monitor drive cycle. See HEATED OXYGEN SENSORS MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

HO2S (Bank 1, upstream 1) disconnected.
HO2S (Bank 1, upstream 1) to PCM wiring fault.
Engine induction air leak between MAF sensor and throttle.
Exhaust system leak.
Contaminated fuel.
Fuel in engine oil.
Engine misfire.
HO2S (Bank 1, upstream 1) failure.
Fuel injection fault.
PCM Keep Alive Memory (KAM) error.

None.

HO2 sensor (Bank 1, upstream 1) to PCM wiring fault.
Engine induction air leak between MAF sensor and throttle.
Exhaust system leak.
HO2 sensor (Bank 1, upstream 1) failure.
Fuel injection fault.
PCM Keep Alive Memory (KAM) error.

None.

HO2 sensor (Bank 1, upstream 1) to PCM wiring fault.
Exhaust system leak.
Contaminated fuel.
Fuel in engine oil.
HO2 sensor (Bank 1, upstream 1) failure.
Fuel injection fault.
PCM Keep Alive Memory (KAM) error.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Temporary contamination of HO2S (Bank 1, upstream 1) causing "lean drift".
Temporary contamination of HO2S (Bank 1, downstream 2) causing "rich drift".
Engine misfire.
HO2 sensors (Bank 1, upstream 1) and (Bank 1, downstream 2) to PCM wiring fault(s).
Engine induction air leak between MAF sensor and throttle.
Exhaust system leak.
Water in Bank 1 spark plug well(s).
HO2 sensors (Bank 1, upstream 1) and/or (Bank 1, downstream 2) failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Temporary contamination of HO2S (Bank 1, upstream 1) causing "rich drift".
Temporary contamination of HO2S (Bank 1, downstream 2) causing "lean drift".
Engine misfire.
HO2 sensors (Bank 1, upstream 1) and (Bank 1, downstream 2) to PCM wiring fault(s).
Exhaust system restriction.
Water in Bank 1 spark plug well(s).
HO2 sensors (Bank 1, upstream 1) and/or (Bank 1, downstream 2) failure.

None (as long as normal APP signals are received from remaining sensors).

APP sensor to PCM sensing circuit 1 (sensor pin No. 5). Check for intermittent open circuit, high resistance or short circuit.
APP sensor reference voltage (sensor pin No. 10). Check for intermittent open circuit.
APP sensor reference ground (sensor pin No. 9). Check for intermittent open circuit.
APP sensor failure.

None.

HO2 sensor (Bank 1, downstream 2) to PCM wiring fault.
HO2 sensor (Bank 1, downstream 2) failure.

None.

HO2 sensor (Bank 1, downstream 2) to PCM wiring fault.
HO2 sensor (Bank 1, downstream 2) failure.

DTC is monitored during Heated Oxygen Sensors Monitor drive cycle. See HEATED OXYGEN SENSORS MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

HO2 sensor (Bank 2, upstream 1) disconnected.
HO2 sensor (Bank 2, upstream 1) to PCM wiring fault.
Engine induction air leak between MAF sensor and throttle.
Exhaust system leak.
Contaminated fuel.
Engine misfire.
HO2 sensor (Bank 1, upstream 1) failure.
Fuel injection fault.
PCM Keep Alive Memory (KAM) error.

None.

HO2 sensor (Bank 2, upstream 1) to PCM wiring fault.
Engine induction air leak between MAF sensor and throttle.
Exhaust system leak.
HO2 sensor (Bank 2, upstream 1) failure.
Fuel injection fault.
PCM Keep Alive Memory (KAM) error.

None.

HO2 sensor (Bank 2, upstream 1) to PCM wiring fault.
Exhaust system leak.
Contaminated fuel.
Fuel in engine oil.
HO2 sensor (Bank 2, upstream 1) failure.
Fuel injection fault.
PCM Keep Alive Memory (KAM) error.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Temporary contamination of HO2S (Bank 2, upstream 1) causing "lean drift".
Temporary contamination of HO2S (Bank 2, downstream 2) causing "rich drift".
Engine misfire.
HO2 sensors (Bank 2, upstream 1) and (Bank 2, downstream 2) to PCM wiring fault(s).
Engine induction air leak between MAF sensor and throttle.
Exhaust system leak.
Water in Bank 2 spark plug well(s).
HO2 sensors (Bank 2, upstream 1) and/or (Bank 2, downstream 2) failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Temporary contamination of HO2S (Bank 2, upstream 1) causing "rich drift".
Temporary contamination of HO2S (Bank 2, downstream 2) causing "lean drift".
Engine misfire.
HO2 sensors (Bank 2, upstream 1) and (Bank 2, downstream 2) to PCM wiring fault(s).
Exhaust system restriction.
Water in Bank 2 spark plug well(s).
HO2 sensors (Bank 2, upstream 1) and/or (Bank 2, downstream 2) failure.

None.

HO2 sensor (Bank 2, downstream 2) to PCM wiring fault.
HO2 sensor (Bank 2, downstream 2) failure.

None.

HO2 sensor (Bank 2, downstream 2) to PCM wiring fault.
HO2 sensor (Bank 2, downstream 2) failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will use a Cylinder Head Temperature (CHT - V6) or Engine Coolant Temperature (ECT - V8) sensor default value.

EOT sensor to PCM sensing circuit. Check for open circuit, high resistance or short circuit.
EOT sensor reference ground circuit (to splice). Check for open circuit.
EOT sensor failure.

PCM will use a Cylinder Head Temperature (CHT - V6) or Engine Coolant Temperature (ECT - V8) sensor default value.

EOT sensor to PCM sensing circuit. Check for high resistance when hot.
EOT sensor to PCM sensing circuit. Check for intermittent high resistance.
EOT sensor failure.

None (as long as normal APP signals are received from remaining sensors).

APP sensor to PCM sensing circuit 2 (sensor pin No. 4). Check for intermittent open circuit, high resistance or short circuit.
APP sensor reference voltage (sensor pin No. 8). Check for intermittent open circuit.
APP sensor reference ground (sensor pin No. 6). Check for intermittent open circuit.
APP sensor failure.

None (as long as normal APP signals are received from remaining sensors).

APP sensor to PCM sensing circuit 3 (sensor pin No. 7). Check for open circuit or high resistance.
APP sensor reference voltage (sensor pin No. 3). Check for open circuit.
APP sensor failure.

None (as long as normal APP signals are received from remaining sensors).

APP sensor to PCM sensing circuit 1 (sensor pin No. 7). Check for short circuit to voltage.
APP sensor reference ground (sensor pin No. 2). Check for open circuit.
APP sensor failure.

None (as long as normal APP signals are received from remaining sensors).

APP sensor to PCM sensing circuit 3 (sensor pin No. 7). Check for intermittent open circuit, high resistance or short circuit.
APP sensor reference voltage (sensor pin No. 3). Check for intermittent open circuit.
APP sensor reference ground (sensor pin No. 2). Check for intermittent open circuit.
APP sensor failure.

None (as long as normal APP signals are received from remaining sensors).

APP sensor to PCM sensing circuit 2 (sensor pin No. 4). Check for open circuit or high resistance.
APP sensor reference voltage (sensor pin No. 8). Check for open circuit.
APP sensor failure.

None (as long as normal APP signals are received from remaining sensors).

APP sensor to PCM sensing circuit 2 (sensor pin No. 4). Check for short circuit to voltage.
APP sensor reference ground (sensor pin No. 6). Check for open circuit.
APP sensor failure.

None (engine shut off).

PCM to Rear Electronic Control Module (RECM) fuel pump drive signal circuit (PCM pin No. FH1-58). Check for open circuit, high resistance or short circuit.
RECM to fuel pump drive circuit. Check for open circuit, high resistance or short circuit.
Fuel pump relay power supply. Check for open circuit or short circuit.
Fuel pump relay to RECM power supply circuit. Check for open circuit.
Fuel pump relay failure.

None. Engine will be running too rich or too lean.

PCM to Rear Electronic Control Module (RECM) fuel pump drive signal circuit (PCM pin No. FH1-58). Check for open circuit, high resistance or short circuit.
RECM to fuel pump drive circuit. Check for intermittent open circuit, high resistance or short circuit.

None (engine shut off).

Rear Electronic Control Module (RECM) to fuel pump drive circuit. Check for open circuit, high resistance or short circuit.
Fuel pump relay power supply. Check for open circuit or short circuit.
Fuel pump relay to RECM power supply circuit. Check for open circuit.
Fuel pump relay failure.

This DTC is monitored with KOER. See KOER under SELF-TESTS.

None.

Accessory drive belt failure.
PCM to generator load circuit (PCM pin No. PI1-50). Check for open circuit, high resistance or short circuit.
Generator failure.

This DTC is monitored with KOEO. See KOEO under SELF-TESTS.

None.

Invalid ignition key code.
Passive Anti-Theft System (PATS) signal to instrument pack missing or corrupted.
PATS Standard Corporate Protocol (SCP) message failure.

PCM will default to a fail-safe cooling strategy.

Coolant level low or leaking.
Coolant contaminated.
Cooling system thermostat defective.
Excessive load on engine (high elevation, steep grade or trailer towing).

PCM will use a CHT default value of 215°F (102°C).

Engine not at normal operating temperature.
Engine overheat condition. See «POSSIBLE CAUSES»(ref-11918-S29274527652001052200000) under «DTC P1285 (V6 ENGINE)»(ref-11918-S08418016582001052200000) .
CHT sensor disconnected.
CHT sensor to PCM circuit fault.
PCM cooling fan circuit failure.
Cooling fan module to fan motor circuit failure.
Cooling fan module failure.

PCM will use a CHT default value of 215°F (102°C).

CHT sensor to cylinder head poor contact.
CHT sensor to PCM sensing circuit. Check for high resistance, open circuit or short circuit to voltage.
CHT sensor failure.

PCM will use a CHT default value of 215°F (102°C).

Engine overheat condition. See «POSSIBLE CAUSES»(ref-11918-S29274527652001052200000) under «DTC P1285 (V6 ENGINE)»(ref-11918-S08418016582001052200000) .
CHT sensor to PCM wiring. Check for short circuit to ground.
CHT sensor failure.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will default to a fail-safe cooling strategy.

Engine overheat condition. See «POSSIBLE CAUSES»(ref-11918-S29274527652001052200000) under «DTC P1285 (V6 ENGINE)»(ref-11918-S08418016582001052200000) .
PCM cooling fan circuit failure.
Cooling fan module to fan motor circuit failure.
Cooling fan module failure.

DTC is monitored during Misfire Monitor drive cycle. See Misfire Monitor Drive Cycle under OBD DIAGNOSTIC MONITORS.

None.

Crankshaft Position (CKP) sensor fault. See «DTC P0320»(ref-11918-S29489067212001051100000) under DIAGNOSTIC TROUBLE CODE IDENTIFICATION.
Camshaft Position (CMP) sensor(s) fault. See «DTC P0340»(ref-11918-S21912851842001051100000) and «DTC P0341»(ref-11918-S19904236522001051400000) under DIAGNOSTIC TROUBLE CODE IDENTIFICATION.
PCM failure.

None.

Bank 1 VVT solenoid valve disconnected.
Bank 1 VVT solenoid valve to PCM Pulse Width Modulated (PWM) drive circuit failure.
Bank 1 VVT solenoid valve power supply circuit fault.
Bank 1 VVT solenoid failure.

None.

Bank 1 VVT solenoid valve to PCM PWM drive circuit fault.
Bank 1 VVT actuator oil supply fault.
Bank 1 VVT actuator stuck.

None.

Bank 1 VVT solenoid valve to PCM PWM drive circuit fault.
Bank 1 VVT actuator oil supply fault.
Bank 1 VVT actuator stuck.

None.

Bank 2 VVT solenoid valve disconnected.
Bank 2 VVT solenoid valve to PCM Pulse Width Modulated (PWM) drive circuit failure.
Bank 2 VVT solenoid valve power supply circuit fault.
Bank 2 VVT solenoid failure.

None.

Bank 2 VVT solenoid valve to PCM PWM drive circuit fault.
Bank 2 VVT actuator oil supply fault.
Bank 2 VVT actuator stuck.

None.

Bank 2 VVT solenoid valve to PCM PWM drive circuit fault.
Bank 2 VVT actuator oil supply fault.
Bank 2 VVT actuator stuck.

DTC is monitored during Evaporative System Monitor drive cycle. See EVAPORATIVE SYSTEM MONITOR DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None.

Restricted vapor piping between fuel tank to EVAP canister purge valve.
EVAP canister purge valve stuck open.

None.

EVAP canister close valve to PCM drive circuit. Check for open circuit, high resistance or short circuit.
EVAP canister close valve power supply circuit. Check for open circuit or short circuit.
EVAP canister close valve failure.

None. However, PCM will inhibit A/C clutch engagement during engine cranking, Wide Open Throttle (WOT) and throttle "limp home" mode.

PCM to A/C compressor clutch relay circuit. Check for open circuit or short circuit.
A/C compressor clutch relay to A/C compressor circuit. Check for open circuit or short circuit.
A/C compressor clutch relay failure.
A/C compressor clutch ground circuit. Check for open circuit.
A/C compressor clutch failure.

None.

A/C pressure sensor to PCM wiring (supply, sense and reference ground). Check for a short circuit to each other.
A/C pressure sensor to PCM sensing circuit. Short circuit to high voltage.
A/C pressure sensor failure.

None.

A/C pressure sensor to PCM sensing circuit. Check for open circuit or short circuit to ground.
A/C pressure sensor to PCM reference voltage circuit. Check for open circuit or short circuit to ground.
A/C pressure sensor to PCM reference ground circuit. Check for open circuit.
A/C pressure sensor failure.

None.

A/C pressure sensor to PCM wiring fault.
A/C pressure sensor failure.

None.

PCM to cooling fan module circuit. Check for open circuit, high resistance or short circuit.
Cooling fan module failure.

Engine running and vehicle moving.

None.

Rear wheel speed sensor(s) circuit(s). Check for intermittent open circuit, high resistance or short circuit.
Front wheel speed sensor(s) circuit(s). Check for intermittent open circuit, high resistance or short circuit.

This DTC is monitored with KOER. See KOER under SELF-TESTS.

None.

Vehicle speed more than 5 MPH preventing KOER self-test from completing.

None.

Intake manifold air leak.
PCM/Throttle Actuator Control Module (TACM) circuit fault.
TACM failure.
Throttle failure.

None.

Engine air filter restricted or defective.
Engine air intake restricted or damaged.
PCM/Throttle Actuator Control Module (TACM) circuit fault.
TACM failure.
Throttle failure.

None.

IMT valve (top) disconnected.
IMT valve (top) to PCM drive circuit fault.
IMT valve (top) power supply circuit fault.
IMT valve (top) failure.

None.

PCM to RCM airbag deployed circuit. Check for open circuit, high resistance or short circuit to ground.
RCM fault.

None.

IMT valve (bottom) disconnected.
IMT valve (bottom) to PCM drive circuit fault.
IMT valve (bottom) power supply circuit fault.
IMT valve (bottom) failure.

This DTC is monitored when vehicle is being driven. While driving vehicle, operate all steering wheel switches.

PCM will default to inhibiting speed control.

Speed control steering wheel switches to PCM signal circuit (PCM pin No. FH1-57). Check for short circuit to B+.
Speed control steering wheel switch(es) failure.

This DTC is monitored when vehicle is being driven. While driving vehicle, operate all steering wheel switches.

PCM will default to inhibiting speed control.

Speed control steering wheel switches to PCM wiring. Check for open circuit, high resistance or short circuit to ground.
Speed control steering wheel switch(es) failure.

This DTC is monitored when ignition is on and brake pedal is operated.

PCM will default to inhibiting speed control.

Brake cancel switch to PCM signal circuit. Check for open circuit, high resistance or short circuit.
Brake cancel switch power supply circuit. Check for open circuit or short circuit.
Brake cancel switch failure.

PCM will enter throttle "limp home" mode. Idle speed will be high with no accelerator pedal response.

TP sensor to PCM sensing circuits (sensor pins No. 1, 2 and 10). Check for open circuit, high resistance or short circuit.
TP sensor to PCM reference voltage circuits (sensor pins No. 4 and 3). Check for open circuit, high resistance or short circuit.
TP sensor to PCM reference ground circuits (sensor pins No. 6 and 7). Check for open circuit, high resistance or short circuit.
TP sensor failure.

None (as long as normal signals are received from the remaining 2 sensors).

TP sensor to PCM sensing circuits (sensor pins No. 1, 2 and 10). Check for open circuit, high resistance or short circuit.
TP sensor to PCM reference voltage circuits (sensor pins No. 4 and 3). Check for open circuit, high resistance or short circuit.
TP sensor to PCM reference ground circuits (sensor pins No. 6 and 7). Check for open circuit, high resistance or short circuit.
TP sensor failure.

PCM will enter throttle "limp home" mode. Idle speed will be high with no accelerator pedal response.

APP sensor to PCM sensing circuits (sensor pins No. 4, 5 and 7). Check for open circuit, high resistance or short circuit.
APP sensor to PCM reference voltage circuits (sensor pins No. 3, 8 and 10). Check for open circuit, high resistance or short circuit.
APP sensor to PCM reference ground circuits (sensor pins No. 2, 6 and 9). Check for open circuit, high resistance or short circuit.
APP sensor failure.

None (as long as normal signals are received from the remaining 2 sensors).

APP sensor to PCM sensing circuits (sensor pins No. 4, 5 and 7). Check for open circuit, high resistance or short circuit.
APP sensor to PCM reference voltage circuits (sensor pins No. 3, 8 and 10). Check for open circuit, high resistance or short circuit.
APP sensor to PCM reference ground circuits (sensor pins No. 2, 6 and 9). Check for open circuit, high resistance or short circuit.
APP sensor failure.

PCM will enter throttle "limp home" mode. Idle speed will be high with no accelerator pedal response. Engine may stop if fuel injection is canceled.

TP sensor circuit fault. TP sensor DTCs will be set.
Throttle circuit fault. Throttle DTCs will be set.
Uneven throttle valve movement due to debris on throttle valve and/or shaft (test for smooth actuation by moving throttle valve by hand while ignition is switched off).
PCM failure.

PCM will default to inhibiting cruise control and possibly disabling engine.

PCM failure.

None.

Note. To reuse PCM, complete 100 ignition key cycles, then clear DTCs using PDU/WDS or complete an additional 40 ignition key cycles.

Vehicle impact.

PCM will default to one of 2 different failure modes

Failure Mode No. 1 - Throttle Actuator Control Module (TACM) operates in open loop control. (Engine may stall and throttle response will be harsh).

Failure Mode No. 2 - Throttle Actuator Control Module (TACM) operates in normal closed loop mode but with reduced torque output. (Engine may stall).

Throttle body failure.

PCM default will stop engine, or engine may have a very low idle speed.

TACM failure (throttle body failure).

PCM default will stop engine, or engine may have a very low idle speed.

TACM power supply or ground circuits. Check for open circuit or high resistance.
SCP circuit fault (U code set).
TACM failure (throttle body failure).

If only one command circuit fails, default action is none. If both command circuits fail, throttle "limp home" is activated. Engine will have a high idle speed with no accelerator pedal response.

PCM to TACM redundant control circuits (TACM pins No. 2 and 3). Check for open circuit, high resistance or short circuit.
TACM failure (throttle body failure).
PCM failure.

PCM will default to throttle "limp home" mode.

Throttle body failure.

PCM default will stop engine, or engine may have a very low idle speed.

Throttle valve stuck due to obstruction.
Throttle body failure.

This DTC is monitored when vehicle is driven.

None.

Vehicle battery voltage low.
Battery power supply to PCM interrupted for more than 20 seconds during engine operation.

This DTC is monitored when vehicle is driven.

None.

Incorrect size tire(s) fitted to vehicle.
Incorrect size wheel(s) fitted to vehicle.

DTC is monitored during Comprehensive Component Monitor Engine Management drive cycle. See COMPREHENSIVE COMPONENT MONITOR ENGINE MANAGEMENT DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM default is self-test is partially inhibited.

PCM failure.

This DTC is monitored with KOEO and KOER. See KOEO and KOER under SELF-TESTS.

None.

PSP switch to PCM signal circuit. Check for open circuit, high resistance or short circuit.
PSP switch reference ground circuit (to splice). Check for open circuit.
PSP switch failure.

PCM default is 2nd and 5th gears only.

Clear DTC P1700.
Diagnose and repair other DTCs.
Perform drive cycle. If DTC P1700 sets again, transmission mechanical failure has occurred (direct one-way clutch).

PCM defaults to DRIVE to maintain all 5 gears. "J" gate gear selected illumination extinguished. Harsh shifts will be present.

Gear selector cable incorrectly adjusted.
Range sensor circuit. Check for intermittent open circuit or short circuit.
Range sensor failure.

This DTC is monitored with KOEO and KOER. See KOEO and KOER under SELF-TESTS.

Traction control will be inhibited.

Selector not in P/N.
Range sensor incorrect alignment.
Gear selector cable incorrectly adjusted.
Gear selector mechanical failure.
Range sensor failure.

This DTC is monitored with KOEO and KOER. See KOEO and KOER under SELF-TESTS.

None.

Range sensor incorrect alignment.
Gear selector cable incorrectly adjusted.
Gear selector mechanical failure.
Range sensor failure.

This DTC is monitored with KOEO and KOER. See KOEO and KOER under SELF-TESTS.

Traction control will be inhibited.

Transmission not at normal operating temperature.
TFT sense circuit. Check for short circuit, high resistance or open circuit.
TFT sensor failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will calculate the TFT from Cylinder Head Temperature (CHT) sensor (V6) or Engine Coolant Temperature (ECT) sensor (V8). Traction control will be inhibited.

TFT sensor sense circuit. Check for high resistance or open circuit.
TFT sensor failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will default to a 1st, 2nd, 3rd shift pattern, or 3rd, 2nd, 3rd, 4th, 5th shift pattern. Shift pattern depends on position of stuck solenoid.

Shift solenoid 1 mechanical failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will default to a 1st, 2nd, 4th, 5th shift pattern, or 3rd, 2nd, 3rd, 4th, 5th shift pattern. Shift pattern depends on position of stuck solenoid.

Shift solenoid 2 mechanical failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will default to a 1st, 1st, 3rd, 4th, 5th shift pattern, or normal shift pattern. Shift pattern depends on position of stuck solenoid.

Shift solenoid 3 mechanical failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

When transmission is in Drive, PCM default is a normal shift pattern. When transmission is being shifted manually, PCM default is gears 2, 3 and 4 will be inhibited.

Shift solenoid 4 mechanical failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will calculate the TFT from Cylinder Head Temperature (CHT) sensor (V6) or Engine Coolant Temperature (ECT) sensor (V8). Traction control will be inhibited.

TFT sensor circuit. Check for short circuit.
TFT sensor failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

None. TCC will be applied or released depending on position of stuck solenoid.

TCC solenoid mechanical failure.

PCM will default to a normal shift pattern. Harsh shifts will be present.

Pressure control solenoid 1 drive circuit. Check for short circuit to ground.
Pressure control solenoid 1 failure.
Transmission mechanical failure (other DTCs may be set).

PCM will default to a 1st, 2nd, 4th, 5th shift pattern. Harsh shifts will be present.

Pressure control solenoid 1 drive circuit. Check for short circuit to B+ or open circuit.
Pressure control solenoid 1 failure.
Transmission mechanical failure (other DTCs may be set).

PCM will default to a 1st, 2nd, 4th, 5th shift pattern.

Pressure control solenoid 1 drive circuit. Check for intermittent short circuit to ground.

PCM will default to manual 4th inhibited.

D-4th switch power supply open circuit.
D-4th switch/PCM sense circuit. Check for short circuit, high resistance or open circuit.
D-4th switch failure.

DTC is monitored during Comprehensive Component Monitor Transmission drive cycle. See COMPREHENSIVE COMPONENT MONITOR TRANSMISSION DRIVE CYCLE under OBD DIAGNOSTIC MONITORS.

PCM will default to TCC lock-up in all gears. Traction control will be inhibited.

Excessive vehicle load.
Transmission fluid level low.
Transmission fluid contaminated.
Transmission fluid cooler failure (clogged).
Transmission Fluid Temperature (TFT) sensor fault. See «DTC P0712»(ref-11918-S02321705772001051500000) under DIAGNOSTIC TROUBLE CODE IDENTIFICATION.

PCM will default to a normal shift pattern. Traction control is inhibited. Harsh shifts will be present.

Pressure control solenoid 2 drive circuit. Check for short circuit to B+ or open circuit.
Pressure control solenoid 2 failure.
Transmission mechanical failure (other DTCs may be set).

PCM will default to 1st, 1st, 3rd, 4th, 4th shift pattern. Harsh shifts will be present.

Pressure control solenoid 2 drive circuit. Check for short circuit to ground.
Pressure control solenoid 2 failure.
Transmission mechanical failure (other DTCs may be set).

Engine Controls - Self-Diagnostics: Other Jaguar S-type I

OBD-II

FREEZE-FRAME DATA

MALFUNCTION INDICATOR LIGHT (MIL)

RETRIEVING CODES

Scheme 1

SELF-TESTS

KOEO

KOER

Adaptive Fuel Monitor Drive Cycle

Catalyst Efficiency Monitor Drive Cycle

Comprehensive Component Monitor Engine Management Drive Cycle

Comprehensive Component Monitor Transmission Drive Cycle

Evaporative System Monitor Drive Cycle

Heated Oxygen Sensors Monitor Drive Cycle

Misfire Monitor Drive Cycle

SUMMARY

Monitoring Conditions

System Default Action

Possible Causes

Possible Cause

More articles — Engine Controls - Self-Diagnostics

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