Driving Position Memory Systems (Dpms): Diagnosis Honda Odyssey III

Canceling the DTC Indication

1. Turn the ignition switch OFF or
2. Press the MEMO button, or position button 1, or position button 2, or
3. Press one of the seat adjustment switches.

Erasing the DTC from Memory

Turn the ignition switch OFF. Raise the front and rear of the driver's seat to the highest position. Disconnect the gray seat harness connectors C901 (12P) and C902 (10P) from the seat floor harness. Wait one minute and then plug them back in.

DTC Index (Without HDS)

DTC INDEX (WITHOUT HDS)

Scheme 2

Scheme 3

Scheme 4

DTC

DTC INDEX

System Input Test and Function Test

1. Connect the HDS to the DLC.
2. Turn the ignition switch ON (II).
3. From the BODY ELECTRICAL SYSTEM SELECT menu, select POWER SEAT/POWER MIRROR, then DTCs. If DTCs are found, troubleshoot the DTCs using B-CAN System Diagnostic Test Mode A (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A»(ref-220996-S18207449512006022200000) ). If no DTCs are found, go to step 4.
4. Exit the DTC mode and select DATA LIST from the POWER SEAT/POWER MIRROR TEST MODE menu.
5. Test each input and monitor each output under the condition listed below. If the data list indication is correct, continue to the next switch. If all switches are OK, go to step 6. If the data list indication is not correct, perform the appropriate test at the control unit and terminal indicated in the table. - Volt drop tests should be performed with the ignition switch ON (II) and all connectors connected and the meter negative test lead attached to a good body ground. - Continuity tests should be performed with the ignition switch OFF and indicated terminals disconnected. DPMS INPUT AND FUNCTION TEST DETAILS Data List Input/Command Condition: Data List Indication Control Unit/Terminal Number/Test (If applicable) Possible cause if result is not obtained Slide Switch Forward Slide switch forward: ON Switch released: OFF Power seat control unit/A7, A1 (RED/WHT) Faulty switch (see «SWITCH TEST/REPLACEMENT»(ref-221019-S10707795662006022200000) ) An open in the wire A short in the wire Faulty control unit Slide Switch Backward Slide switch backward: ON Switch released: OFF Power seat control unit/A27, A1 (ORN) Faulty switch (see «SWITCH TEST/REPLACEMENT»(ref-221019-S10707795662006022200000) ) An open in the wire A short in the wire Faulty control unit Recline Switch Forward Recline switch forward: ON Switch released: OFF Power seat control unit/A6, A1 (PNK) Faulty switch (see «SWITCH TEST/REPLACEMENT»(ref-221019-S10707795662006022200000) ) An open in the wire A short in the wire Faulty control unit Recline Switch Backward Recline switch backward: ON Switch open: OFF Power seat control unit/A25, A1 (PUR) Faulty switch (see «SWITCH TEST/REPLACEMENT»(ref-221019-S10707795662006022200000) ) An open in the wire A short in the wire Faulty control unit Front Up-Down Switch Up Front up-down switch up: ON Switch released: OFF Power seat control unit/A5, A1 (LT GRN) Faulty switch (see «SWITCH TEST/REPLACEMENT»(ref-221019-S10707795662006022200000) ) An open in the wire A short in the wire Faulty control unit Front Up-Down Switch Down Front up-down switch down: ON Switch released: OFF Power seat control unit/A4, A1 (RED/BLK) Faulty switch (see «SWITCH TEST/REPLACEMENT»(ref-221019-S10707795662006022200000) ) An open in the wire A short in the wire Faulty control unit Rear Up-down switch Up Rear up-down switch up: ON Switch released: OFF Power seat control unit/A23, A1 (GRN/ORN) Faulty switch (see «SWITCH TEST/REPLACEMENT»(ref-221019-S10707795662006022200000) ) An open in the wire A short in the wire Faulty control unit Rear Up-down Switch Down Rear up-down switch down: ON Switch released: OFF Power seat control unit/A3, A1 (GRY) Faulty switch (see «SWITCH TEST/REPLACEMENT»(ref-221019-S10707795662006022200000) ) An open in the wire A short in the wire Faulty control unit Reverse Switch Transmission in P: ON Transmission out of P: OFF Power seat control unit/A31 (BLU/BLK) Transmission in P: 12 V Faulty switch An open in the wire Faulty control unit Ignition switch for power seat control Ignition switch ON (II): ON Ignition switch off: OFF Power seat control unit/A35 (YEL) Ignition switch ON (II): 12 V Blown No. 21 (7.5 A) fuse in the driver's under-dash fuse/relay box An open in the wire Faulty control unit Slide Sensor Seat moving forward or rearward: ON Seat not moving: OFF Power seat control unit/A11 (YEL/GRN) Pulses as seat moves, 2.5 V average Faulty sensor An open in the wire Faulty control unit Front Up-Down Sensor Seat front moving up/down: ON Seat not moving: OFF Power seat control unit/A12 (YEL/BLK) Pulses as seat moves, 2.5 V average Faulty sensor An open in the wire Faulty control unit Recline Sensor Seat back moving forward or rearward: ON Seat not moving: OFF Power seat control unit/A10 (BLU/WHT) Pulses as seat moves, 2.5 V average Faulty sensor An open in the wire Faulty control unit Rear Up-down Sensor Seat rear moving up/down: ON Seat not moving: OFF Power seat control unit/A13 (GRN/WHT) Pulses as seat moves, 2.5 V average Faulty sensor An open in the wire Faulty control unit Seat MEMO Switch Seat MEMO switch pressed: ON Switch released: OFF Power seat control unit/A20 (WHT) Seat MEMO switch pressed: 0 V; Switch released: 5 V or more Faulty switch An open in the wire Faulty control unit Driver 1 position Switch Driver 1 position switch pressed: ON Switch released: OFF Power seat control unit/A18 (BLU) Driver 1 position switch pressed: 0 V; Switch released: 5 V or more Faulty switch An open in the wire Faulty control unit Driver 2 position Switch Driver 2 position switch pressed: ON Switch released: OFF Power seat control unit/A19 (BLU/YEL) Driver 2 position switch pressed: 0 V; Switch released: 5 V or more Faulty switch An open in the wire Faulty control unit Driver 1 Position Indicator Driver 1 Position Indicator on: ON Driver 1 Position Indicator off: OFF Function Test: Go to step 6 N/A Driver 2 Position Indicator Driver 2 Position Indicator on: ON Driver 2 Position Indicator off: OFF Function Test: Go to step 6 N/A Slide Motor Command As seat moves forward or rearward: ON Seat not moving: OFF Function Test: Go to step 6 N/A Recline Motor Command As seat back moves forward or rearward: ON Seat not moving: OFF Function Test: Go to step 6 N/A Front Height Motor Command As front of seat moves up or down: ON Seat not moving: OFF Function Test: Go to step 6 N/A Rear Height Motor Command As rear of seat moves up or down: ON Seat not moving: OFF Function Test: Go to step 6 N/A Power Seat Buzzer Command Power seat buzzer commanded on: ON Power seat buzzer commanded off: OFF Function Test: Go to step 6 N/A
6. Exit the DATA LIST and select Function Test.
7. Perform each of the function tests listed in the table shown in «POWER SEAT INDICATOR FUNCTION TEST DETAILS»(ref-221019-S41350947782006022200000) . The appropriate output should occur. If the function operates normally, go to the next function test. If all function tests operate normally, the system is OK. If the function does not operate normally, perform the appropriate test at the control unit and terminal indicated in the table shown in «POWER SEAT INDICATOR FUNCTION TEST DETAILS»(ref-221019-S41350947782006022200000) . - Volt drop tests should be performed with the ignition switch ON (II) and all connectors connected - Continuity tests should be perform with the ignition switch OFF and indicated terminals disconnected - Jumper tests should be done according to the instructions indicated. If the test indicates that the component operates normally, but the function does not operate with the function test or the normal use of the component, the control unit that operates that function must be faulty; replace it. If the test indicates that the component does not operate normally, check for an open or short in the harnesses between the component and the control unit. If the harness is OK, replace the component. SYSTEM INPUT TEST AND FUNCTION TEST Function Test Component and operation Control Unit/Terminal Number/Test (If applicable) Possible cause if result is not obtained Memory Seat Indicator 1 Memory seat indicator 1 illuminates Power seat control unit/A16 (GRN) Disconnect power seat control unit connector A. Connect A16 to A9; memory seat indicator 1 should come on. Faulty switch An open in the wire A short in the wire Memory Seat Indicator 2 Memory seat indicator 2 illuminates Power seat control unit/A17 (RED) Disconnect power seat control unit connector A. Connect A17 to A9; memory seat indicator 2 should come on. Faulty switch An open in the wire A short in the wire POWER SEAT FUNCTION TEST DETAILS Function Test Component and operation Control Unit/Terminal Number/Test (If applicable) Possible cause if result is not obtained Slide Motor-Full Forward Seat slides forward Power seat control unit/B1 (WHT/RED), B4 (BRN), B7 (LT GRN), B17 (YEL) Disconnect power seat control unit connector B. Connect B1 to B17 and B7 to B4; driver's seat should slide forward. Faulty motor An open in the wire A short in the wire Slide Motor-Full Backward Seat slides rearward Power seat control unit/B1 (WHT/RED), B4 (BRN), B7 (LT GRN), B17 (YEL) Disconnect power seat control unit connector B. Connect B1 to B7 and B17 to B4; driver's seat should slide backward. Faulty motor An open in the wire A short in the wire Function Test Component and operation Control Unit/Terminal Number/Test (If applicable) Possible cause if result is not obtained Front UP-DOWN Motor-Full Up Front of seat moves up Power seat control unit/B1 (WHT/RED), B4 (BRN), B6 (BRN/WHT), B16 (ORN) Disconnect power seat control unit connector B. Connect B1 to B16 and B6to B4; front of driver's seat should move up. Faulty motor An open in the wire A short in the wire Front UP-DOWN Motor-Full Down Front of seat moves down Power seat control unit/B1 (WHT/RED), B4 (BRN), B6 (BRN/WHT), B16 (ORN) Disconnect power seat control unit connector B. Connect B1 to B6 and B16 to B4; front of driver's seat should move down. Faulty motor An open in the wire A short in the wire Rear Up-Down Motor-Full Up Rear of seat moves up Power seat control unit/B1 (WHT/RED), B2 (GRN), B4 (BRN), B10 (BLU) Disconnect power seat control unit connector B. Connect B1 to B2 and B10 to B4; driver's seat should move up. Faulty motor An open in the wire A short in the wire Rear Up-Down Motor-Full Down Rear of seat moves down Power seat control unit/B1 (WHT/RED), B2 (GRN), B4 (BRN), B10 (BLU) Disconnect power seat control unit connector B. Connect B1 to B10 and B2 to B4; driver's seat should move down. Faulty motor An open in the wire A short in the wire Recline Motor-Full Forward Seat back moves forward Power seat control unit/B1 (WHT/RED), B4 (BRN), B9 (RED), B11 (GRY) Disconnect power seat control unit connector B. Connect B1 to B9 and B11 to B4; driver's seat back should move forward. Faulty motor An open in the wire A short in the wire Recline Motor-Full Backward Seat back moves backward Power seat control unit/B1 (WHT/RED), B4 (BRN), B9 (RED), B11 (GRY) Disconnect power seat control unit connector B. Connect B1 to B11 and B9 to B4; driver's seat back should move backward. Faulty motor An open in the wire A short in the wire

Power Seat Control Unit Input Test

Note. Before troubleshooting the DPMS, troubleshoot the multiplex integrated control system first using B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).

Scheme 5

1. Turn the ignition switch OFF.
2. Remove the driver's power seat (see «FRONT SEAT REMOVAL/INSTALLATION»(ref-220972-S18160097682006022200000) ). NOTE: Be careful not to scratch the interior trim.
3. Disconnect the connectors from the power seat control unit (A). NOTE: All connector views are from wire side of female terminals.
4. Inspect the connector and socket terminals to be sure they are all making good contact. If the terminals are bent, loose or corroded, repair them as necessary and recheck the system. If the terminals look OK, go to step 5.
5. Reconnect the connectors to the power seat control unit, and make these input tests at the connectors. If any test indicates a problem, find and correct the cause, then recheck the system. If all the input tests prove OK, the control unit must be faulty; replace it. POWER SEAT CONTROL UNIT INPUT TEST DETAILS Cavity Wire Test condition Test: Desired result Possible cause if result is not obtained A9: B4: B18 BRN Under all conditions Check for voltage to ground: There should be less than 1 V. Poor ground (G602) An open in the wire A35 YEL Ignition switch ON (II) Check for voltage to ground: There should be battery voltage. Blown No. 21 (7.5 A) fuse in the driver's under-dash fuse/relay box An open in the wire A37 WHT/RED Under all conditions Check for voltage to ground: There should be battery voltage. Blown No. 15 (40 A) fuse in the under-hood fuse/relay box Blown No. 7 (7.5 A) fuse in the driver's under-dash fuse/relay box An open in the wire B1 WHT/RED Under all conditions Check for voltage to ground: There should be battery voltage. Blown No. 20 (40 A) fuse in the under-hood fuse/relay box Blown No. 16 (20 A) fuse in the driver's under-dash fuse/relay box An open in the wire B8 WHT/BLU Under all conditions Check for voltage to ground: There should be battery voltage. Blown No. 20 (40 A) fuse in the under-hood fuse/relay box Blown No. 14 (20 A) fuse in the driver's under-dash fuse/relay box An open in the wire A16 GRN Under all conditions Attach to ground: The driving position memory switch indicator 1 should come on. Blown No. 7 (7.5 A) fuse in the driver's under-dash fuse/relay box Faulty driving position memory switch An open in the wire A17 RED Under all conditions Attach to ground: The driving position memory switch indicator 2 should come on. Blown No. 7 (7.5 A) fuse in the driver's under-dash fuse/relay box Faulty driving position memory switch An open in the wire A18 BLU Press No. 1 button of the driving position memory switch Check for voltage to ground: There should be less than 1 V. Poor ground (G601) Faulty driving position memory switch An open in the wire A19 BLU/YEL Press No. 2 button of the driving position memory switch Check for voltage to ground: There should be less than 1 V. Poor ground (G601) Faulty driving position memory switch An open in the wire A20 WHT Press the MEMO button of the driving position memory switch Check for voltage to ground: There should be less than 1 V. Poor ground (G601) Faulty driving position memory switch An open in the wire A31 BLU/BLK Shift lever in P position Check for voltage to ground: There should be less than 1 V. Faulty transmission range switch An open in the wire

Scheme 6

Scheme 7

1. Remove the driver's door panel (see «FRONT DOOR PANEL REMOVAL/INSTALLATION»(ref-220965-S31837144572006022200000) ).
2. Disconnect the 10P connector from the memory switch (A).
3. Remove the two screws, then remove the switch from the door panel.
4. Check for continuity between the terminals in each switch position according to the table (Scheme 7)
5. If the continuity is not as specified, replace the illumination bulb (B) or the switch.

Scheme 8

Scheme 9

1. Remove the power seat adjustment switch knobs (A) and recline cover from the driver's power seat (see «FRONT SEAT DISASSEMBLY/REASSEMBLY - MANUAL HEIGHT ADJUSTABLE»(ref-220972-S26887893082006022200000) ), then remove the two screws and the power seat switch.
2. Disconnect the 12P connector from the power seat adjustment switch (B).
3. Reinstall the adjustment switch knobs to the switch.
4. Check for continuity between the terminals in each switch position according to the table (Scheme 9)
5. If the continuity is not as specified, replace the switch.

Scheme 10

Scheme 11

1. Remove the driver's seat (see «FRONT SEAT REMOVAL/INSTALLATION»(ref-220972-S18160097682006022200000) ).
2. Disconnect the connector from each power seat motor. NOTE: All connectors are terminal side of male terminals.
3. Test each motor by connecting power and ground according to the table (Scheme 11) When the motor stops running, disconnect battery power immediately.
4. If the motor does not run or fails to run smoothly, replace: Slide motor (see «FRONT SEAT RECLINE MOTOR REPLACEMENT»(ref-220972-S08655592302006022200000) ) Front up-down motor (see «FRONT SEAT RECLINE MOTOR REPLACEMENT»(ref-220972-S08655592302006022200000) ) Rear up-down motor (see «FRONT SEAT RECLINE MOTOR REPLACEMENT»(ref-220972-S08655592302006022200000) ) NOTE: For recline motor, check for an open in the recline motor subharness. If the harness is OK, replace the recline motor (see «FRONT SEAT RECLINE MOTOR REPLACEMENT»(ref-220972-S08655592302006022200000) ).