P1796
KICK-DOWN SWITCH SYSTEM - P1796The diagnostic check on the mode switch input is a plausibility check which is performed continuously while in operation. A fault is determined when kickdown is seen when the throttle angle is less than 50 %. However a fault will only be logged if the output speed is greater than 256 rpm. No fault is logged if there is already a throttle signal fault. The kickdown switch is located on the floor under the accelerator pedal and is operated when the throttle is fully open (approx 90 %). It is a normally open switch with one contact permanently to ground and the other is a signal to the TCM. The signal wire is routed through the bulkhead harness and the gearbox harness to the TCM.
Possible Causes:
Faulty harness wiring/connections.
Faulty switch (or switch adjustment).
Effects:
No kickdown facility.
Remedy:
Repair or renew harness/connector.
Re-adjust or renew switch.
Troubleshooting Schematic
Key To Schematic Diagrams
1. Transmission Control Module (TCM)
2. Transmission Unit
3. TCM Multi-pin Connector
4. Transmission Rotary Switch
5. Transmission Connector Plug
6. Engine Control Module
7. Instrument Pack
8. ABS/Traction Control Control Module
9. Kickdown Switch
Pin Outs