Pinpoint Test DV: Electronic Throttle Body (ETB): Introduction
WARNING: This page is about a different variant/trim than selected.
WARNING:
THIS VEHICLE IS EQUIPPED WITH HIGH VOLTAGE CABLES, COMPONENTS, AND WIRING. THE HIGH VOLTAGE WARNING LABELS CONTAINING THE HIGH VOLTAGE SYMBOL ARE LOCATED ON EACH HIGH VOLTAGE COMPONENT. HIGH VOLTAGE CABLES AND WIRING ARE ORANGE IN COLOR. CERTIFIED RUBBER INSULATING GLOVES AND A FACE SHIELD MUST BE WORN WHEN WORKING WITH THE HIGH VOLTAGE CABLES, COMPONENTS, OR WIRING. THE IGNITION KEY MUST BE CYCLED TO THE OFF POSITION FOR A MINIMUM OF 5 MINUTES, AND THE HIGH VOLTAGE TRACTION BATTERY SERVICE DISCONNECT PLUG PLACED IN THE SERVICING/SHIPPING POSITION BEFORE DISCONNECTING THE HIGH VOLTAGE CABLES. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY OR DEATH.
DO NOT DISCONNECT, DISABLE, OR TOUCH THE HIGH VOLTAGE CABLES, COMPONENTS, OR WIRING DURING THE MODULE REPROGRAMMING PROCEDURE BECAUSE HIGH VOLTAGE IS PRESENT. THE HIGH VOLTAGE WARNING LABELS CONTAINING THE HIGH VOLTAGE SYMBOL ARE LOCATED ON EACH HIGH VOLTAGE COMPONENT. HIGH VOLTAGE CABLES AND WIRING ARE ORANGE IN COLOR. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY OR DEATH.
DO NOT DISCONNECT, DISABLE, OR TOUCH THE HIGH VOLTAGE CABLES, COMPONENTS, OR WIRING DURING THE MODULE REPROGRAMMING PROCEDURE BECAUSE HIGH VOLTAGE IS PRESENT. THE HIGH VOLTAGE WARNING LABELS CONTAINING THE HIGH VOLTAGE SYMBOL ARE LOCATED ON EACH HIGH VOLTAGE COMPONENT. HIGH VOLTAGE CABLES AND WIRING ARE ORANGE IN COLOR. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY OR DEATH.
WARNING:
SUBSTANTIAL OPENING AND CLOSING TORQUE IS APPLIED BY THIS SYSTEM. TO PREVENT INJURY, BE CAREFUL TO KEEP FINGERS AWAY FROM THROTTLE MECHANISM WHEN ACTUATED. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
NOTE:
The voltage of the TP2 circuit and PID reaches a limit of approximately 4.5 volts at approximately 45 degrees of throttle angle.
This pinpoint test is intended to diagnose the following:
- ETB (9F991)
- harness circuits: ETCRTN, ETCREF, TP1, TP2, TACM+, TACM-
- powertrain control module (PCM) (12A650)
ELECTRONIC THROTTLE BODY (ETB) CONNECTOR PIN REFERENCE CHART
| Pin | Circuit |
|---|---|
| 2 | TACM- (Throttle Actuator Control Motor -) |
| 1 | TACM+ (Throttle Actuator Control Motor +) |
| 6 | TP2 (Throttle Position Sensor 2) |
| 3 | TP1 (Throttle Position Sensor 1) |
| 4 | ETCRTN (Electronic Throttle Control Return) |
| 5 | ETCREF (Electronic Throttle Control Reference Voltage to TP) |
POWERTRAIN CONTROL MODULE (PCM) CONNECTOR PIN REFERENCE CHART
| Pin | Circuit |
|---|---|
| E59 | ETCREF (Electronic Throttle Control Reference Voltage to TP) |
| E60 | ETCRTN (Electronic Throttle Control Return) |
| B67 | VPWR (Vehicle Power) |
| B69 | PWRGND (Power Ground) |
| E51 | TACM- (Throttle Actuator Control Motor -) |
| E34 | TACM+ (Throttle Actuator Control Motor +) |
| E45 | TP2 (Throttle Position Sensor 2) |
| E44 | TP1 (Throttle Position Sensor 1) |