Note. For connector terminal ID, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article.
- Using scan tool, access speed control inputs. While observing scan tool, push speed control ON/OFF switch several times, then leave on. If scan tool showed speed control inputs switching on and off, go to «DTC P1596-B: SPEED CONTROL SWITCH ALWAYS HIGH»(ref-576-S28341340112000030800000) . If scan tool does not show speed control inputs switching on and off, go to next step.
- Disconnect speed control ON/OFF switch 2-pin connector. Using a DVOM, check voltage of speed control switch signal circuit at speed control ON/OFF switch 2-pin connector. If voltage is 6 volts or less, go to next step. If voltage is more than 6 volts, repair short to voltage on speed control switch signal circuit. Perform «TEST VER-4A: SPEED CONTROL VERIFICATION»(ref-576-S16464623272000030800000) .
- Turn ignition off. Using a DVOM, check resistance of speed control switch ground circuit at speed control switch 2-pin connector. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open ground circuit to speed control switch. Perform «TEST VER-4A: SPEED CONTROL VERIFICATION»(ref-576-S16464623272000030800000) .
- Disconnect Powertrain Control Module (PCM) connector. Using a DVOM, check resistance of speed control switch signal circuit between speed control ON/OFF switch 2-pin connector and PCM connector terminal No. 41. See «SPEED CONTROL SWITCH 2-PIN CONNECTOR WIRE IDENTIFICATION»(ref-576-S13478307022000030800000) table and «PCM CONNECTOR WIRE IDENTIFICATION»(ref-576-S40769139272000030800000) table. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, go to step 6 .
- Using a DVOM, check resistance between speed control switch 2-pin connector terminals identified in «SPEED CONTROL SWITCH RESISTANCE»(ref-576-S31078682362000030800000) table. If resistance is within specification, replace PCM. Perform «TEST VER-4A: SPEED CONTROL VERIFICATION»(ref-576-S16464623272000030800000) . If resistance is not within specification, replace on/off switch. Perform «TEST VER-4A: SPEED CONTROL VERIFICATION»(ref-576-S16464623272000030800000) .
- Disconnect clock spring 5-pin connector. Using a DVOM, check resistance of speed control switch signal circuit between clock spring connector and PCM connector terminal No. 41. See «CLOCK SPRING 5-PIN CONNECTOR WIRE IDENTIFICATION»(ref-576-S04430747892000030800000) table and «PCM CONNECTOR WIRE IDENTIFICATION»(ref-576-S40769139272000030800000) table. If resistance is less than 5 ohms, replace clock spring. Perform «TEST VER-4A: SPEED CONTROL VERIFICATION»(ref-576-S16464623272000030800000) . If resistance is 5 ohms or more, repair open speed control switch signal circuit between clock spring connector and PCM connector. Perform «TEST VER-4A: SPEED CONTROL VERIFICATION»(ref-576-S16464623272000030800000) .
| Application | Wire Color |
|---|---|
| Speed Control Switch Ground Circuit | Black/Light Green |
| Speed Control Switch Signal Circuit | Red/Light Green |
SPEED CONTROL SWITCH 2-PIN CONNECTOR WIRE IDENTIFICATION
| Application | Wire Color | |
|---|---|---|
| PCM Terminal No. 41 | ||
| Speed Control Switch Signal Circuit | Red/Light Green | |
PCM CONNECTOR WIRE IDENTIFICATION
| Switch Position | Ohms |
|---|---|
| CANCEL | 900-918 |
| SET | 6584-6716 |
| ACCEL/RESUME | 15246-15554 |
| ON/OFF | Zero (Continuity) |
| COAST | 2911-2969 |
SPEED CONTROL SWITCH RESISTANCE
| Application | Wire Color |
|---|---|
| Speed Control Switch Signal Circuit | Red/Light Green |
CLOCK SPRING 5-PIN CONNECTOR WIRE IDENTIFICATION