Troubleshooting: Standard Cab Wiring Schematic (4S/4M)
NOT USED | NOT USED | NOT USED | J1587 B J1587 A | J1939 LO | J1939 HI | BATTERY | RETARDER | GROUND | IGNITION | TRAILER ABS WL | ABS WL WL INTERLOCK ABS WL GND NOT USED | WSS DR+ WSS DR- | WSS DL+ WSS DL- | PMV DR HLD | PMV DR CMN | PMV DR REL | PMV DL HLD | PMV DL CMN PMV DL REL | PMV SR HLD | PMV SR CMN | PMV SR REL | PMV SL HLD | PMV SL CMN | PMV SL REL | WSS SR+ WSS SR- | WSS SL+ | WSS SL- |
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| X1 |
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| X2 |
6 | 5 | 4 | 13 14 | 7 | 8 | 16 | 17 | 1 | 3 | 2 | 18 15 12 9 | 10 11 | 15 18 | 10 | 9 | 13 | 16 12 17 | 4 | 6 | 7 | 1 | 3 | 2 | 11 14 | 5 | 8 | |
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| X1 |
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| X2 |
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| 30A |
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| 5A |
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| *3 2 1 | *3 2 1 | * 3 2 1 * 3 2 1 |
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| WSS | WSS |
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| WSS | WSS | |
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| STEER |
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| DRIVE | DRIVE |
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| STEER | ||
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| AXLE |
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| AXLE | AXLE |
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| DRIVE |
| STEER |
| STEER | AXLE | ||||
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| DRIVE |
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| RIGHT |
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| RIGHT | LEFT |
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| LEFT | ||||||||||
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| AXLE |
| AXLE |
| AXLE |
| AXLE | |||||||||
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| RIGHT |
| LEFT |
| RIGHT |
| LEFT |
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| PMV |
| PMV |
| PMV |
| PMV |
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| DRIVE AXLE |
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| STEER AXLE |
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| (OPTIONAL) |
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| RETARDER |
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| RELAY |
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| ABS INDICATOR |
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| TRAILER ABS |
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| LAMP |
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| INDICATOR LAMP |
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| 5A |
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| 5A |
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+12V IGNITION
+12V BATTERY
* Pressure Modulator Valves |
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Connector | Packard | |
Common (CMN) | Pin 2 | Pin B |
Hold (HLD) | Pin 3 | Pin C |
Release (REL) | Pin 1 | Pin A |
FIGURE 16 - STANDARD CAB WIRING SCHEMATIC (4S/4M)
35
