A/t Control System (Diagnostic Codes): Overview Honda CR-V IV

Scheme 300

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information See HOW TO TROUBLESHOOT THE A/T SYSTEM or HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS . This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

1. Problem verification: 1. Turn the ignition switch to ON (II). 2. Compare the A/T P Switch, A/T R Switch, A/T N Switch, A/T D Switch, A/T 2 Switch, A/T 1 Switch, Forward Switch(ATPFWD), and Reverse Switch(ATPRVS) inputs with the HDS to the following table, in each shift lever position. A/T P Switch A/T R Switch A/T N Switch A/T D Switch A/T 2 Switch A/T 1 Switch Forward Switch (ATPFW Reverse Switch (ATPRV P o x x x x x x x R x o x x x x x o N x x o x x x x x D x x x o x x o x 2 x x x x o x o x 1 x x x x x o o x o: ON/x: OFF Signal Current conditions Values Unit A/T P Switch A/T R Switch A/T N Switch A/T D Switch A/T 2 Switch A/T 1 Switch Forward Switch(ATPFWD) Reverse Switch(ATPRVS) Do the transmission range switch signals match? YES : Intermittent failure, the system is OK at this time. NO : The failure is duplicated. Go to step 2.
2. Transmission range switch signal check: 1. Compare the A/T P Switch, A/T R Switch, A/T N Switch, A/T D Switch, A/T 2 Switch, A/T 1 Switch, Forward Switch(ATPFWD), and Reverse Switch(ATPRVS) inputs with the HDS to the following table, in each shift lever position. A/T P Switch A/T R Switch A/T N Switch A/T D Switch A/T 2 Switch A/T 1 Switch Forward Switch (ATPFW Reverse Switch (ATPRV P o x x x x x x x R x o x x x x x o N x x o x x x x x D x x x o x x o x 2 x x x x o x o x 1 x x x x x o o x o: ON/x: OFF Signal Current conditions Values Unit A/T P Switch A/T R Switch A/T N Switch A/T D Switch A/T 2 Switch A/T 1 Switch Forward Switch(ATPFWD) Reverse Switch(ATPRVS) Are any transmission range switch signals ON in all shift lever positions? YES : Go to step 4 . NO : Record the abnormal circuit, then go to step 3.
3. Transmission range switch check: 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connector. Transmission range switch 10P connector 3. Connect the transmission range switch connector terminal that incorrectly indicates ON in step 2 to ground with a jumper wire. 4. Turn the ignition switch to ON (II). 5. Compare the A/T P Switch, A/T R Switch, A/T N Switch, A/T D Switch, A/T 2 Switch, A/T 1 Switch, Forward Switch(ATPFWD), and Reverse Switch(ATPRVS) inputs with the HDS to the following table. A/T P Switch A/T R Switch A/T N Switch A/T D Switch A/T 2 Switch A/T 1 Switch Forward Switch (ATPFW Reverse Switch (ATPRV P o x x x x x x x R x o x x x x x o N x x o x x x x x D x x x o x x o x 2 x x x x o x o x 1 x x x x x o o x o: ON/x: OFF Signal Current conditions Values Unit A/T P Switch A/T R Switch A/T N Switch A/T D Switch A/T 2 Switch A/T 1 Switch Forward Switch(ATPFWD) Reverse Switch(ATPRVS) Do multiple transmission range switch signals indicate ON? YES : The transmission range switch is OK. Repair a short in the wires between the corresponding transmission range switch connector terminal and the PCM. Refer to the following table. ATP-P ATP-R ATP-N ATP-D ATP-D3 ATP-1 ATPFWD ATPRVS PCM B24 B25 B23 B35 B27 B26 B39 B45 Transmission range switch 10 9 4 8 3 7 1 5 NO : «REPLACE THE TRANSMISSION RANGE SWITCH»(/honda/cr-v/iv-2011-2015/remont/automatic-trans/#at-service-information) .
4. Transmission range switch check: 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connector. Transmission range switch 10P connector 3. Turn the ignition switch to ON (II). 4. Check the transmission range switch signal input that remained ON with the HDS to the following table. A/T P Switch A/T R Switch A/T N Switch A/T D Switch A/T 2 Switch A/T 1 Switch Forward Switch (ATPFW Reverse Switch (ATPRV P o x x x x x x x R x o x x x x x o N x x o x x x x x D x x x o x x o x 2 x x x x o x o x 1 x x x x x o o x o: ON/x: OFF Signal Current conditions Values Unit A/T P Switch A/T R Switch A/T N Switch A/T D Switch A/T 2 Switch A/T 1 Switch Forward Switch(ATPFWD) Reverse Switch(ATPRVS) Do any transmission range switch signals remain ON? YES : The transmission range switch is OK. Go to step 5. NO : «REPLACE THE TRANSMISSION RANGE SWITCH»(/honda/cr-v/iv-2011-2015/remont/automatic-trans/#at-service-information) .
5. Shorted wire check (ATP-P, ATP-R, ATP-N, ATP-D, ATP-D3, ATP-1, ATP-FWD, ATP-RVS line): 1. Check for continuity to ground in the circuit that remained ON in step 4 . Does the circuit that indicated ON have continuity to ground? YES : Repair a short to ground in the wire between the corresponding transmission range switch connector terminal and the PCM. NO : The wires are OK. Update the PCM if it does not have the latest software See «PCM REMOVAL AND INSTALLATION»(ref-595374-S31779448642014013100000) or «PCM UPDATE»(ref-595375-S42937672232014013100000) . If the PCM was updated, replace the PCM See «PCM REMOVAL AND INSTALLATION»(ref-595374-S31779448642014013100000) or «PCM UPDATE»(ref-595375-S42937672232014013100000) .

Scheme 301

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information See HOW TO TROUBLESHOOT THE A/T SYSTEM or HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS . This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

Scheme 302

1. Problem verification: 1. Make sure the shift cable is properly adjusted. 2. Turn the ignition switch to ON (II). 3. Compare the A/T P Switch, A/T R Switch, A/T N Switch, A/T D Switch, A/T 2 Switch, A/T 1 Switch, Forward Switch(ATPFWD), and Reverse Switch(ATPRVS) inputs with the HDS to the following table, in each shift lever position. A/T P Switch A/T R Switch A/T N Switch A/T D Switch A/T 2 Switch A/T 1 Switch Forward Switch (ATPFWD) Reverse Switch (ATPRVS) P o x x x x x x x R x o x x x x x o N x x o x x x x x D x x x o x x o x 2 x x x x o x o x 1 x x x x x o o x o: ON/x: OFF Signal Current conditions Values Unit A/T P Switch A/T R Switch A/T N Switch A/T D Switch A/T 2 Switch A/T 1 Switch Forward Switch(ATPFWD) Reverse Switch(ATPRVS) Do the transmission range switch signals match? YES : Intermittent failure, the system is OK at this time. NO : The failure is duplicated. Go to step 2.
2. Transmission range switch signal check: 1. Compare the A/T P Switch, A/T R Switch, A/T N Switch, A/T D Switch, A/T 2 Switch, A/T 1 Switch, Forward Switch(ATPFWD), and Reverse Switch(ATPRVS) inputs with the HDS to the following table, in each shift lever position. A/T P Switch A/T R Switch A/T N Switch A/T D Switch A/T 2 Switch A/T 1 Switch Forward Switch (ATPFWD) Reverse Switch (ATPRVS) P o x x x x x x x R x o x x x x x o N x x o x x x x x D x x x o x x o x 2 x x x x o x o x 1 x x x x x o o x o: ON/x: OFF Signal Current conditions Values Unit A/T P Switch A/T R Switch A/T N Switch A/T D Switch A/T 2 Switch A/T 1 Switch Forward Switch(ATPFWD) Reverse Switch(ATPRVS) Do all signals remain OFF? YES : Go to step 5 . NO : Record the abnormal circuit, then go to step 3.
3. Transmission range switch check: 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connector. Transmission range switch 10P connector 3. Connect the transmission range switch connector terminal that did not indicate ON in step 2 to ground with a jumper wire. 4. Turn the ignition switch to ON (II). 5. Check the transmission range switch signal that did not indicate ON with the HDS. Does the transmission range switch indicate ON? YES : «REPLACE THE TRANSMISSION RANGE SWITCH»(/honda/cr-v/iv-2011-2015/remont/automatic-trans/#at-service-information) . NO : The transmission range switch is OK. Go to step 4.
4. Open wire check (ATP-P, ATP-R, ATP-N, ATP-D, ATP-D3, ATP-1, ATP-FWD, ATP-RVS line): 1. Turn the ignition switch to LOCK (0). 2. Jump the SCS line with the HDS. 3. Disconnect the following connector. PCM connector B (49P) 4. Check for continuity between the transmission range switch connector terminal and the PCM terminal of the input which indicated OFF. Refer to the following table. ATP-P ATP-R ATP-N ATP-D ATP-D3 ATP-1 ATPFWD ATPRVS PCM B24 B25 B23 B35 B27 B26 B39 B45 Transmission range switch 10 9 4 8 3 7 1 5 Is there continuity? YES : The wire(s) is OK. Update the PCM if it does not have the latest software See «PCM REMOVAL AND INSTALLATION»(ref-595374-S31779448642014013100000) or «PCM UPDATE»(ref-595375-S42937672232014013100000) . If the PCM was updated, replace the PCM See «PCM REMOVAL AND INSTALLATION»(ref-595374-S31779448642014013100000) or «PCM UPDATE»(ref-595375-S42937672232014013100000) . NO : Repair an open in the wire between the corresponding transmission range switch connector terminal and the PCM.
5. Open wire check (GND line): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connector. Transmission range switch 10P connector 3. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Transmission range switch 10P connector: disconnected Test circuit GND Test point 1 Transmission range switch 10P connector No. 6 (BLK) Test point 2 Body ground Is there continuity? YES : The GND wire is OK, «REPLACE THE TRANSMISSION RANGE SWITCH»(/honda/cr-v/iv-2011-2015/remont/automatic-trans/#at-service-information) . NO : Repair an open in the GND wire between the transmission range switch and ground (G101), or repair poor ground (G101).

Scheme 303

Note. Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the General Troubleshooting Information See HOW TO TROUBLESHOOT THE A/T SYSTEM or HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS . This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.

1. Current ATF temperature check: 1. Turn the ignition switch to ON (II). 2. Check the parameter(s) below with the HDS. Signal Threshold Current conditions Values Unit Values Unit ATF Temperature Less than 14 °F Less than - 10 °C Do the current condition(s) match the threshold? YES : Go to step 2. NO : Go to step 3 .
2. ATF temperature sensor check (after warm up): 1. Start the engine, and warm it up to normal operating temperature (the radiator fan comes on). 2. Check the parameter(s) below with the HDS. Signal Threshold Current conditions Values Unit Values Unit ATF Temperature Less than 14 °F Less than - 10 °C Do the current condition(s) match the threshold? 14 °F (-10 °C) or below «REPLACE THE ATF TEMPERATURE SENSOR»(/honda/cr-v/iv-2011-2015/remont/automatic-trans/#at-service-information) , then do the repair verification . Abnormal temperature rise If there is an abnormal temperature rise in temperature of the ATF temperature sensor, update the PCM if it does not have the latest software See «PCM REMOVAL AND INSTALLATION»(ref-595374-S31779448642014013100000) or «PCM UPDATE»(ref-595375-S42937672232014013100000) , or substitute a known-good PCM See «PCM REMOVAL AND INSTALLATION»(ref-595374-S31779448642014013100000) or «PCM UPDATE»(ref-595375-S42937672232014013100000) , then do the do the repair verification . 14 °F (-10 °C) or higher The ATF temperature sensor is OK. Intermittent failure, the system is OK at this time.
3. Problem verification: 1. Check the parameter(s) below with the HDS. Signal Threshold Current conditions Values Unit Values Unit ATF Temperature More than 230 °F More than 110 °C Do the current condition(s) match the threshold? YES : The failure is duplicated. Go to step 4. NO : Intermittent failure, the system is OK at this time.
4. ATF temperature sensor check (after cool down): 1. Let the engine cool until the Engine Coolant Temperature reads 122 °F (50 °C) or below with the HDS in the A/T Data List. Signal Current conditions Values Unit Engine Coolant Temperature 2. Check the parameter(s) below with the HDS. Signal Threshold Current conditions Values Unit Values Unit ATF Temperature More than 230 °F More than 110 °C Do the current condition(s) match the threshold? 230 °F (110 °C) or higher Replace the ATF temperature sensor See «ATF TEMPERATURE SENSOR REMOVAL AND INSTALLATION»(/honda/cr-v/iv-2011-2015/remont/automatic-trans/#at-service-information) , then do the do the repair verification . Abnormal temperature decrease If there is an abnormal temperature decrease in temperature of the ATF temperature sensor, update the PCM if it does not have the latest software See «PCM REMOVAL AND INSTALLATION»(ref-595374-S31779448642014013100000) or «PCM UPDATE»(ref-595375-S42937672232014013100000) , or substitute a known-good PCM See «PCM REMOVAL AND INSTALLATION»(ref-595374-S31779448642014013100000) or «PCM UPDATE»(ref-595375-S42937672232014013100000) , then do the do the repair verification . 230 °F (110 °C) or below The ATF temperature sensor is OK. Intermittent failure, the system is OK at this time.

See also:
• REPLACE THE TRANSMISSION RANGE SWITCH