Acura TSX / Honda Accord CL. Manual — part 516

Fig. 2: Locating Electronic Throttle Control System Components (2 Of 2)

DTC TROUBLESHOOTING

DTC TROUBLESHOOTING INDEX

DTC

Description

DTC P0122

TP Sensor A Circuit Low Voltage

DTC P0123

TP Sensor A Circuit High Voltage

DTC P0222

TP Sensor B Circuit Low Voltage

DTC P0223

TP Sensor B Circuit High Voltage

DTC P2135

TP Sensor A/B Voltage Incorrect Correlation

DTC P2122

APP Sensor A Circuit Low Voltage

DTC P2123

APP Sensor A (Throttle Position Sensor D) Circuit High Voltage

DTC P2127

APP Sensor B Circuit Low Voltage

DTC P2128

APP Sensor B (Throttle Position Sensor E) Circuit High Voltage

DTC P2138

APP Sensor A/B Incorrect Voltage Correlation

DTC P1683

Throttle Valve Default Position Spring Performance Problem

DTC P1684

Throttle Valve Return Spring Performance Problem

DTC P2101

Throttle Actuator System Malfunction

DTC P2108

Throttle Actuator Control Module Problem

DTC P2118

Throttle Actuator Current Range/Performance Problem

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX

DTC P0122: TP SENSOR A CIRCUIT LOW VOLTAGE

1. Turn the ignition switch ON (II).

2. Check for Temporary DTCs or DTCs in the DTCs MENU with the HDS.

Are DTC P0122 and P0222 indicated at the same time?

YES - Check for poor connections or loose terminals at the throttle body, the throttle actuator control
module, and at the ECM/PCM, then go to step 17 . If the connections are OK, go to step 9.

NO - Go to step 3.

3. Clear the DTC with the HDS.

4. Check TP SENSOR-A in the DATA LIST with the HDS.

Is there about 0.3 V or less when the throttle is fully opened?

YES - Go to step 5.

NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the
throttle body and the throttle actuator control module.

5. Turn the ignition switch OFF.

6. Disconnect the throttle body 6P connector.

7. Disconnect the throttle actuator control module 16P connector.

8. Check for continuity between throttle body 6P connector terminal No. 1 and body ground.

DTC P2176

Throttle Actuator Control System Idle Position Not Learned

DTC P2552

Throttle Actuator Control Module Relay Malfunction

DTC U0107

Lost Communication With Throttle Actuator Control Module

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX

Fig. 3: Checking For Continuity Between Throttle Body 6P Connector Terminal No. 1 And Body
Ground

Is there continuity?

YES - Repair short in the wire between the throttle body and the throttle actuator control module (TPS A
line), then go to step 17 .

NO - Substitute a known-good throttle actuator control module (see THROTTLE ACTUATOR
CONTROL MODULE REPLACEMENT ), then go to step 17 and recheck. If DTC P0122 is not
indicated, replace the original throttle actuator control module, then go to step 17 . If DTC P0122 is

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX

indicated, go to step 15 .

9. Measure voltage between throttle body 6P connector terminal No. 2 and body ground.

Fig. 4: Measuring Voltage Between Throttle Body 6P Connector Terminal No. 2 And Body Ground

Is there about 5 V?

YES - Go to step 15.

NO - Go to step 10.

2004 Acura TSX

2004 ENGINE PERFORMANCE Electronic Throttle Control System - TSX