Honda Jazz/Fit 2005 · Service Manual

DTC Troubleshooting: P0780 (42-2) (CVT)

DTC Troubleshooting: P0780 (42-2)

DTC P0780:  Problem in Shift Control System


For KB, KE, KG, and KQ Models


NOTE:

1.Check whether the another DTC is indicated.

Is the another DTC indicated?


YES - Perform the troubleshooting for the indicated DTC(s), and recheck for DTC P0780 after troubleshooting.


NO - Go to 2.


2.Measure the stall speed RPM in the D, S, L, and R positions.

Is the stall speed over 3,500 rpm (min-1)?


YES - Replace the transmission.n


NO - If the stall speed is below 2,000 rpm (min-1), replace the control valve body.
If the stall speed is in 2,000-3,500 rpm (min-1), go to 3.

3.Turn the ignition switch OFF.

4.Set the digital multitester to monitor the throttle position sensor voltage between PCM connector terminals A15 and 23 or A24.

 

SAA5ES2K77100081422FAAD01Wire side of female terminalsPCM CONNECTOR A (31P)LG2
(BRN/YEL)
TPS
(RED/BLK)
LG1
(BRN/YEL)

5.Drive the vehicle in the D position on a flat road at 60 km/h (37 mph) with throttle position sensor voltage 2.0 V, and measure the engine speed RPM.

Is the engine speed in 2,200-3,100 rpm (min-1)?


YES - Replace the control valve body.n


NO - Replace the transmission.n