P1787

Test 572-575:

Test 576:

SYMPTOM:
P1787-OD HYDRAULIC PRESSURE SWITCH CIRCUIT

When Monitored and Set Condition:
P1787-OD HYDRAULIC PRESSURE SWITCH CIRCUIT
When Monitored: In 1st, 2nd, or 3rd gear with engine speed above 1000 RPM shortly after a shift and every minute there after. The following conditions must be met for successful OBDII trip: the engine speed must be greater than 1000 RPM. The trans must be warm or hot.
Set Condition: The vehicle must be driven in 1st gear continuously for 8 seconds, or in 2nd gear for 8 seconds and in 3rd gear continuously for 8 seconds. No MIL lamp trouble codes have occurred or recurred.

POSSIBLE CAUSES
- CHECKING SYMPTOMS AND POSSIBLE CAUSES
- LOW BATTERY VOLTAGE CAUSING SYMPTOM
- INTERMITTENT CODE P1787

Test 200-203:

Test 204-205:

SYMPTOM:
ADDITIONAL OD HYDRAULIC PRESSURE SWITCH CIRCUIT (P1787)

POSSIBLE CAUSES
- CONDITIONS REQUIRED TO SET THIS CODE ARE NOT PRESENT AT THIS TIME
- SHORT BETWEEN TCR OUTPUT CKT & OD PRES SW SENSE CKT
- TCR OUTPUT CIRCUIT SHORT AT INLINE CONNECTOR
- OD SOLENOID INTERNAL FAILURE
- OD SOLENOID FAILURE