Test Readings, Control Module Connections: K12
PIN AND TEST CONDITION REFERENCE
| Pin | Pin BOB | Cable Colour | Component/Function | In/Out | Test conditions | Test Between | Test reading | See |
|---|---|---|---|---|---|---|---|---|
| 1 (K12) | 21 | RD/BU | Battery voltage (+15 circuit) | In | Ignition ON | 21-B+ | < 0.5 V | TEST READINGS, CONTROL MODULE CONNECTIONS |
| 2 (K12) | 22 | BK | Ground | In | Ignition ON | 22-B- | < 0.5 V | GROUND |
| 3 (K12) | 23 | BK | Ground | In | Ignition ON | 23-B- | < 0.1 V | GROUND |
| 4 (K12) | 24 | GN | P-bus (+) | In/Out | Ignition ON | 24-22 | 2.5 V | BUS COMMUNICATION |
| 5 (K12) | 25 | GN | I-bus (+) | In/Out | Ignition ON | 25-22 | 2.5 V | BUS COMMUNICATION |
| 6 (K12) | 26 | RD/BU | Battery voltage (+15 Circuit) | In | Ignition ON | 26-B+ | < 0.5 V | POWER SUPPLY |
| 7 (K12) | 27 | RD | Battery voltage (+30 circuit) | In | Ignition ON | 27-B+ | < 0.5 V | POWER SUPPLY |
| 8 (K12) | 28 | GY/WH | Ground, Sensor ground, fuel level sensor | Out | Ignition ON | 28-B- | < 0.1 V | FUEL GAUGE |
| 9 (K12) | 29 | YE/WH | Sensor, fuel level | In | Ignition ON | 29-28 | 0.5-3.7 V | FUEL GAUGE |
| 10 (K12) | 30 | VT | Wheel speed, Rear left | In | Rotate wheel slowly | 30-32 | 0 V B+ (LP HI LOp) |
SPEEDOMETER |
| Rotate wheel 1/2 revolution per second | 30-22 | 15 Hz 50% (LP HI LOp) |
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| 11 (K12) | 31 | WH | P-bus (-) | Ignition ON | 31-22 | 2.5 V | BUS COMMUNICATION | |
| 12 (K12) | 32 | WH | I-bus (-) | Ignition ON | 32-22 | 2.5 V | BUS COMMUNICATION |
= greater than; < = less than; ~ = alternating current (LP: LOGIC PROBE P = select pulse; p = visible pulse)