Pinpoint Test HH: Dc/Dc Converter: Introduction
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.
This pinpoint test is intended to diagnose the following:
- harness circuits: DC/DC enable (DCE) and DC/DC fault (DCF)
- DC/DC converter (14B227)
- powertrain control module (PCM) (12A650)
DC/DC CONVERTER-A (DDC-A) CONNECTOR PIN REFERENCE CHART
| Pin | Circuit |
|---|---|
| 6 | DCF (DC/DC FAULT) |
| 1 | DCE (DC/DC ENABLE) |
DC/DC CONVERTER-HIGH VOLTAGE (DDC-HV) CONNECTOR PIN REFERENCE CHART
| Pin | Circuit |
|---|---|
| (-) | HVN (High Voltage Negative) |
| (+) | HVP (High Voltage Positive) |
TRANSAXLE ASSEMBLY-DC/DC HIGH VOLTAGE (DDHV) CONNECTOR PIN REFERENCE CHART
| Pin | Circuit |
|---|---|
| (-) | HVN (High Voltage Negative) |
| (+) | HVP (High Voltage Positive) |
POWERTRAIN CONTROL MODULE (PCM) CONNECTOR PIN REFERENCE CHART
| Pin | Circuit |
|---|---|
| B67, B68 | VPWR (Vehicle Power) |
| B8 | DCF (DC/DC FAULT) |
| T12 | DCE (DC/DC ENABLE) |