Captiva |
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• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
• | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
• | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Circuit | Short to Ground | High Resistance | Open | Short to Voltage | Signal Performance |
---|---|---|---|---|---|
5 V Reference | P06A3 | - | P0122, P0222, | P06A3 | P0121 |
TP Sensor 1 Signal | P0122 | P2119, P2135, P2176 | P0122 | P0123, P2135 | P0121, P2135 |
TP Sensor 2 Signal | P0222 | P2135 | P0223 | P0223, P2135 | P0121, P2135 |
Low Reference | - | - | P0123, P0223 | - | - |
Circuit | Short to Ground | Open | Short to Voltage |
---|---|---|---|
Operating Conditions: The engine is idling. Parameter Normal Range: TP Sensor 1 3.0-4.0 V | |||
5 V Reference | 0.00 V | 0.00 V | 4-5 V |
TP Sensor 1 Signal | 0.00 V | 0.00 V | 5.00 V |
Low Reference | - | 4-5 V | - |
Circuit | Short to Ground | Open | Short to Voltage |
---|---|---|---|
Operating Conditions: The engine is idling. Parameter Normal Range: TP Sensor 2 1.4-2.4 V | |||
5 V Reference | 0-0.5 V | 0-0.5 V | 3-5 V |
TP Sensor 2 Signal | 0.00 V | 5.00 V | 5.00 V |
Low Reference | - | 5.00 V | - |
The throttle body assembly contains 2 throttle position (TP) sensors. The TP sensors are mounted to the throttle body assembly and are not serviceable. The TP sensors provide a signal voltage that changes relative to throttle blade angle. The engine control module (ECM) supplies the TP sensors with a common 5 V reference circuit, a common low reference circuit, and 2 independent signal circuits.
The TP sensors have opposite functionality. TP sensor 1 signal voltage decreases and TP sensor 2 signal voltage increases as the accelerator pedal increases to wide open throttle (WOT).
• | DTCs P0102, P0103, P0107, P0108, P0112, P0113, P0117, P0118, P0335, or P0336 is not set. |
• | The engine speed is between 400-7,000 RPM. |
• | The engine coolant temperature (ECT) is between 69-127°C (156-260°F). |
• | The inlet air temperature (IAT) is between -20 to +125°C (-4 to +257°F). |
• | The DTC runs continuously when the above conditions are met. |
• | DTC P06A3 is not set. |
• | The ignition is ON or the engine is running. |
• | The engine is not operating in reduced power mode. |
• | The ignition voltage is greater than 6 V. |
• | The DTCs runs continuously when the above conditions are met. |
• | DTCs P0121, P0122, P0123, P0222, P0223, or P06A3 are not set. |
• | The ignition is ON or the engine is running. |
• | The engine is not operating in reduced power mode. |
• | The ignition voltage is greater than 6 V. |
• | The DTCs runs continuously when the above conditions are met. |
The ECM detects that the TP sensor 1 voltage is stuck in range for less than 1 s.
The ECM detects that the TP sensor 1 voltage is less than 0.3 V for less than 1 s.
The ECM detects that the TP sensor 1 voltage is greater than 4.8 V for less than 1 s.
The ECM detects that the TP sensor 2 voltage is less than 0.3 V for less than 1 s.
The ECM detects that the TP sensor 2 voltage is greater than 4.6 V for less than 1 s.
The ECM detects that TP sensor 1 and TP sensor 2 disagree greater than 7-10 percent for less than 1 s.
• | DTC P0121 is a type B DTC |
• | The ECM commands the throttle actuator control (TAC) system to operate in a Reduced Engine Power mode. |
• | DTC P0122, P0123, P0222, P0223, and P2135 are type A DTCs |
• | The ECM commands the throttle actuator control (TAC) system to operate in a Reduced Engine Power mode. |
• | DTC P0121 is a type B DTC. |
• | DTCs P0122, P0123, P0222, P0223 and P2135 is a type A DTC. |
A high resistance condition on the throttle position and throttle actuator control circuits could cause a DTC to set.
Throttle Actuator Control (TAC) System Description
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Control Module References for scan tool information
⇒ | If the DTC is set, refer to DTC P0641, P0651, P0697, or P06A3 . |
⇒ | If greater than the specified range, test the low reference circuit for a short to voltage, or an open/high resistance. If the circuit tests normal, replace the K20 ECM. |
⇒ | If less than the specified range, test the 5 V reference circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the K20 ECM. |
⇒ | If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM. |
⇒ | If greater than specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM. |
⇒ | If less than specified range, test the signal circuit for a short to ground, or an open/high resistance. If the circuit tests normal, replace the K20 ECM. |
⇒ | If greater than specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K20 ECM. |
⇒ | If less than the specified range, test the signal circuit for a short to ground, or an open/high resistance. If the circuit tests normal, replace the K20 ECM. |
Perform the Diagnostic Repair Verification after completing the repair.
• | Throttle Body Assembly Replacement : LF1 or LFW |
• | Control Module References for ECM replacement, programming and setup |
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