Control Unit Input Test
Remove glove box, glove box upper cover and control unit from dashboard. Disconnect electrical connectors from control unit. Perform input tests at 16-pin connector. See 16-PIN CONNECTOR TEST table. If all input tests are okay, check wiring between control unit and display (22-wire harness). If 22-wire harness is okay, replace control unit.
16-PIN CONNECTOR TEST
| Color (1) | Test Condition | Desired Result | ||
|---|---|---|---|---|
| BLK1 | At all times | GND | ||
| BLK2 & BLK3 | Probe Between BLK2 & BLK3 | Continuity | ||
| WHT/YEL | At all times | BAT | ||
| YEL | IGN Switch ON | BAT | ||
| RED/BLK | Light Switch ON | BAT | ||
| ORN | IGN Switch ON | Jumper to ground, system check warning light ON | ||
| PNK | IGN Switch ON | 10V | ||
| YEL/RED | IGN Switch ON, Raise Front Of Car, Rotate One Wheel Slowly | Voltage between YEL (+) and YEL/RED (-). 0-12-0-12V Repeat | ||
| BLU/BLK | Oil Level Low | NO Continuity To GND | ||
| BLU/BLK | Oil Level OK | Continuity To GND | ||
| BLU/GRN | Coolant Reservoir Full | Continuity To GND | ||
| BLU/GRN | Coolant Reservoir Low | NO Continuity To GND | ||
| GRN/BLK | Washer Reservoir Full | Continuity To GND | ||
| GRN/BLK | Washer Reservoir Low | NO Continuity To GND | ||
| GRN/RED | Fuel Tank Full | 8V Or More | ||
| GRN/RED | Fuel Tank Low | 3V Or Less | ||
| YEL/WHT | IGN Switch ON, Fuel Tank Full | 1V Or Less | ||
| BRN | Fuel Filler Door Opener Lever Pulled UP | Continuity To Ground | ||
| YEL/GRN | IGN Switch ON, Cooling Fan ON | 8.5V Or Less When Coolant Temp Is Over 122°F (50°C) | ||
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