Allison

Allison 3000 & 4000 Gen 4 Fault Code: P2739 Pre...

DIAGNOSTIC RESPONSE:Inhibit retarder operation CIRCUIT DESCRIPTION:Pressure Control Solenoid 5 (PCS5) is a normally closed solenoid used to apply the retarder solenoid or differential lock solenoid (3700 models). The Transmission Control...

Allison 3000 & 4000 Gen 4 Fault Code: P2738 Pre...

DIAGNOSTIC RESPONSE:Allow 2 through 6, N, R. Inhibit retarder and TCC operation CIRCUIT DESCRIPTION:Pressure Control Solenoid 5 (PCS5) is a normally closed solenoid used to apply the retarder solenoid or...

Allison 3000 & 4000 Gen 4 Fault Code: P2736 Pre...

DIAGNOSTIC RESPONSE:Inhibit retarder operation CIRCUIT DESCRIPTION:Pressure Control Solenoid 5 (PCS5) is a normally closed solenoid used to apply the retarder solenoid or differential lock solenoid (3700 models). The Trans mission...

Allison 3000 & 4000 Gen 4 Fault Code: P2730 Pre...

DIAGNOSTIC RESPONSE:DNS, SOL OFF (hydraulic default) CIRCUIT DESCRIPTION:Pressure Control Solenoid 1 (PCS1) is a normally open solenoid used to apply the C1 clutch in 1st – 4th range. The Transmission...

Allison 3000 & 4000 Gen 4 Fault Code: P2729 Pre...

DIAGNOSTIC RESPONSE:DNS, SOL OFF (hydraulic default) CIRCUIT DESCRIPTION:Pressure Control Solenoid 1 (PCS1) is a normally open solenoid used to apply the C1 clutch in 1st and 4th range. The Transmission...

Allison 3000 & 4000 Gen 4 Fault Code: P2727Pres...

DIAGNOSTIC RESPONSE:DNS, SOL OFF (hydraulic default) CIRCUIT DESCRIPTION:Pressure Control Solenoid 1 (PCS1) is a normally open solenoid used to apply the C1 clutch in 1st and 4th range. The Transmission...