System Input Test and Function Test
- Connect the HDS to the DLC.
- Turn the ignition switch to ON (II).
- From the BODY ELECTRICAL SYSTEM SELECTION menu, select POWER SEAT/POWER MIRROR, then DTCs. If DTCs are found, troubleshoot the DTCs using B-CAN System Diagnosis Test Mode A (see «TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A»(/acura/rl/ii-2008-2012/remont/communication-devices/#multiplex-integrated-control-system__troubleshooting-b-can-system-diagnosis-test) ). If no DTCs are found, go to step 4.
- Exit the DTC mode, and select the DATA LIST from the POWER SEAT/POWER MIRROR TEST MODE MENU.
- Test each input and monitor each output under the condition show: 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, do the appropriate test at the control unit and terminal indicated in the table. Voltage drop tests should be done with the ignition switch to ON (II), all the connectors connected, and the meter negative test lead attached to a good body ground. Continuity tests should be done with the ignition switch to LOCK (0) and the indicated terminals disconnected. DATA LIST REFERENCE Data List Input/ Command Condition: Data List Indication Control Unit/Terminal Number/Test (If applicable) Possible cause if desired result is not obtained Door Mirror UP Switch Mirror select switch in LEFT, then RIGHT Mirror up switch pressed: ON Mirror up switch released: OFF MICU/P9 (WHT) Mirror select switch UP: 0V Center or DOWN: 5 V Faulty switch (see «POWER MIRROR SWITCH TEST/ REPLACEMENT»(/acura/rl/ii-2008-2012/remont/mirrors/#power-mirrors) ) An open in the wire A short to ground in the wire Faulty control unit Door Mirror Select in LEFT selection Mirror select switch in LEFT position: ON Select switch in CENTER or RIGHT position: OFF MICU/P11 (PUR) Mirror select switch LEFT: 0 V Center or RIGHT: 5 V Faulty switch (see «POWER MIRROR SWITCH TEST/ REPLACEMENT»(/acura/rl/ii-2008-2012/remont/mirrors/#power-mirrors) ) An open in the wire A short to ground in the wire Faulty control unit Door Mirror DOWN Switch Mirror select switch in LEFT, then RIGHT Mirror down switch pressed: ON Mirror switch released: OFF MICU/P10(PNK) Mirror select switch DOWN: 0 V Center or UP: 5 V Faulty switch (see «POWER MIRROR SWITCH TEST/ REPLACEMENT»(/acura/rl/ii-2008-2012/remont/mirrors/#power-mirrors) ) An open in the wire A short to ground in the wire Faulty control unit Door Mirror Select in Right selection Mirror select switch in RIGHT position: ON Select switch in CENTER or LEFT position: OFF MICU/P22 (GRY) Mirror select switch RIGHT: 0V Center or LEFT: 5 V Faulty switch (see «POWER MIRROR SWITCH TEST/ REPLACEMENT»(/acura/rl/ii-2008-2012/remont/mirrors/#power-mirrors) ) An open in the wire A short to ground in the wire Faulty control unit Door Mirror LEFT Switch Mirror select switch in LEFT, then RIGHT Mirror left switch pressed: ON Mirror switch released: OFF MICU/P25 (GRN) Mirror select switch LEFT: 0 V Center or RIGHT: 5 V Faulty switch (see «POWER MIRROR SWITCH TEST/ REPLACEMENT»(/acura/rl/ii-2008-2012/remont/mirrors/#power-mirrors) ) An open in the wire A short to ground in the wire Faulty control unit Door Mirror RIGHT Switch Mirror select switch in LEFT, then RIGHT Mirror right switch pressed: ON Mirror switch released: OFF MICU/P26 (BLU) Mirror select switch RIGHT: 0V Center or LEFT: 5 V Faulty switch (see «POWER MIRROR SWITCH TEST/ REPLACEMENT»(/acura/rl/ii-2008-2012/remont/mirrors/#power-mirrors) ) An open in the wire A short to ground in the wire Faulty control unit Slide Switch Forward Slide switch forward: ON Switch released: OFF Power seat control unit/A1, A7 (BLU) Slide switch forward: 0 V Switch released: 5 V Faulty switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2008-2012/remont/memory-modules/#driver-position-memory-system-dpms) ) An open in the wire A short to ground in the wire Faulty control unit Slide Switch Backward Slide switch backward: ON Switch released: OFF Power seat control unit/A1, A27 (ORN/BLU) Slide switch backward: 0 V Switch released: 5 V Faulty switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2008-2012/remont/memory-modules/#driver-position-memory-system-dpms) ) An open in the wire A short to ground in the wire Faulty control unit Recline Switch Forward Recline switch forward: ON Switch released: OFF Power seat control unit/A1, A6 (WHT/YEL) Recline switch forward: 0 V Switch released: 5 V Faulty switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2008-2012/remont/memory-modules/#driver-position-memory-system-dpms) ) An open in the wire A short to ground in the wire Faulty control unit Recline Switch Backward Recline switch backward: ON Switch released: OFF Power seat control unit/A1, A25 (ORN/GRN) Recline switch backward: 0 V Switch released: 5 V Faulty switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2008-2012/remont/memory-modules/#driver-position-memory-system-dpms) ) An open in the wire A short to ground in the wire Faulty control unit Front Up-Down Switch Up Front up-down switch up: ON Switch released: OFF Power seat control unit/A1, A5 (GRN/BLU) Front up-down switch up: 0 V Switch released: 5 V Faulty switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2008-2012/remont/memory-modules/#driver-position-memory-system-dpms) ) An open in the wire A short to ground in the wire Faulty control unit Front Up-Down Switch Down Front up-down switch down: ON Switch released: OFF Power seat control unit/A1, A4 (RED/BLK) Front up-down switch down: 0 V Switch released: 5 V Faulty switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2008-2012/remont/memory-modules/#driver-position-memory-system-dpms) ) An open in the wire A short to ground in the wire Faulty control unit Rear Up-Down Switch Up Rear up-down switch up: ON Switch released: OFF Power seat control unit/A1, A23 (GRN/ORN) Rear up-down switch up: 0 V Switch released: 5 V Faulty switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2008-2012/remont/memory-modules/#driver-position-memory-system-dpms) ) An open in the wire A short to ground in the wire Faulty control unit Rear Up-Down Switch Down Rear up-down switch down: ON Switch released: OFF Power seat control unit/A1, A3 (BRN/BLK) Rear up-down switch up: 0 V Switch released: 5 V Faulty switch (see «POWER SEAT ADJUSTMENT SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2008-2012/remont/memory-modules/#driver-position-memory-system-dpms) ) An open in the wire A short to ground in the wire Faulty control unit Ignition Switch for Power Seat Control Ignition switch ON (II): ON Ignition switch LOCK (0): OFF Power seat control unit/A35 (BLK/YEL) Ignition switch ON (II): 12 V Blown No. 21 (10 A) fuse in the driver's under-dash fuse/relay box An open in the wire Faulty control unit A/T Gear Position Switch (P) Transmission range switch P position: ON Any other position than P: OFF Power seat control unit/A31 (BLK/BLU) Transmission range switch P: 0 V Faulty transmission range switch An open in the wire Faulty control unit Seat MEMO Switch Seat MEMO switch pressed: ON Switch released: OFF Driver's MPCS unit/A31 (ORN) Seat MEMO switch pressed: 0 V Switch released: 5 V more Faulty switch (see «DRIVING POSITION MEMORY SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2008-2012/remont/memory-modules/#driver-position-memory-system-dpms) ) An open in the wire A short to ground in the wire Faulty control unit Poor ground (G601) Driver 1 Position Switch Driver position 1 switch pressed: ON Switch released: OFF Driver's MPCS unit/A29 (GRN) Driver's position 1 switch pressed: 0 V Switch released: 5 V more Faulty switch (see «DRIVING POSITION MEMORY SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2008-2012/remont/memory-modules/#driver-position-memory-system-dpms) ) An open in the wire A short to ground in the wire Faulty control unit Poor ground (G601) Driver 2 Position Switch Driver position 2 switch pressed: ON Switch released: OFF Driver's MPCS unit/A30 (RED) Driver's position 2 switch pressed: 0 V Switch released: 5 V more Faulty switch (see «DRIVING POSITION MEMORY SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2008-2012/remont/memory-modules/#driver-position-memory-system-dpms) ) An open in the wire A short to ground in the wire Faulty control unit Poor ground (G601) Column Tilt Up Switch Steering tilt switch up: ON Switch released: OFF Power tilt/telescopic steering control unit/A15 (BRN), A7 (LT GRN) Switch in TILT UP: 0 V Switch released: Battery voltage Faulty switch (see «POWER TILT/TELESCOPIC STEERING SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2008-2012/remont/memory-modules/#driver-position-memory-system-dpms) ) An open in the wire A short to ground in the wire Faulty control unit Column Tilt Down Switch Steering tilt switch down: ON Switch released: OFF Power tilt/telescopic steering control unit/A15 (BRN), A6 (GRN) Switch in TILT DOWN: 0 V Switch released: Battery voltage Faulty switch (see «POWER TILT/TELESCOPIC STEERING SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2008-2012/remont/memory-modules/#driver-position-memory-system-dpms) ) An open in the wire A short to ground in the wire Faulty control unit Column Telescopic Pull Switch Steering telescopic switch pull: ON Switch released: OFF Power tilt/telescopic steering control unit/A15 (BRN), A14 (PUR) Switch in TELESCOPIC PULL: 0 V Switch released: Battery voltage Faulty switch (see «POWER TILT/TELESCOPIC STEERING SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2008-2012/remont/memory-modules/#driver-position-memory-system-dpms) ) An open in the wire A short to ground in the wire Faulty control unit Column Telescopic Push Switch Steering telescopic switch push: ON Switch released: OFF Power tilt/telescopic steering control unit/A15 (BRN), A6 (GRN) Switch in TELESCOPIC PUSH: 0 V Switch released: Battery voltage Faulty switch (see «POWER TILT/TELESCOPIC STEERING SWITCH TEST/REPLACEMENT»(/acura/rl/ii-2008-2012/remont/memory-modules/#driver-position-memory-system-dpms) ) An open in the wire A short to ground in the wire Faulty control unit Ignition Switch (ETS) Ignition switch ON (II): ON Ignition switch LOCK (0): OFF Power tilt/telescopic steering control unit/A9 (PNK) Ignition switch ON (II): Battery voltage Blown No. 7 (10 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 backward: 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 A short to ground 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 A short to ground in the wire Faulty control unit Recline Sensor Seat-back moving forward or backward: ON Seat not moving: OFF Power seat control unit/A10 (WHT/RED) Pulses as seat moves: 2.5 V average Faulty sensor An open in the wire A short to ground 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 (YEL/BLK) Pulses as seat moves: 2.5 V average Faulty sensor An open in the wire A short to ground in the wire Faulty control unit Column Tilt Sensor Steering tilting up/down: ON Steering not moving: OFF Power tilt/telescopic steering control unit/A4 (ORN), A12 (BLU) Pulses as steering moves: 2.5 V average Faulty sensor An open in the wire A short to ground in the wire Faulty control unit Column Telescopic Sensor Steering telescopic pull/push: ON Steering not moving: OFF Power tilt/telescopic steering control unit/A5 (LT BLU), A13 (YEL) Pulses as steering moves: 2.5 V average Faulty sensor An open in the wire A short to ground in the wire Faulty control unit Left Mirror Horizontal Sensor Left mirror moves left/right: NORMAL Left mirror does not move: ABNORMAL Driver's MPCS unit/A10 (PUR), A19(WHT) Left mirror moving from full left to full right: A10 (about 0.1 V to 4.5V), A19(5V) Faulty sensor An open in the wire Faulty control unit Left Mirror Vertical Sensor Left mirror moves up/down: NORMAL Left mirror stopped: ABNORMAL Driver's MPCS unit/A9 (BLU), A19(WHT) Left mirror moving from full down to full up: A9 (about 0.1 V to 4.5 V), A19(5V) Faulty sensor An open in the wire Faulty control unit Right Door Mirror Horizontal Sensor Right mirror moves left/right: NORMAL Right mirror stopped: ABNORMAL Front passenger's MPCS unit/A6 (BLU), A13(PNK) Right mirror moving from full left to full right: A6 (about 0.1 V to 4.5 V), A13(5V) Faulty sensor An open in the wire Faulty control unit Right Door Mirror Vertical Sensor Right mirror moves up/down: NORMAL Right mirror stopped: ABNORMAL Front passenger's MPCS unit/A5 (RED), A13(PNK) Right mirror moving from full down to full up: A5 (about 0.1 V to 4.5 V), A13(5V) Faulty sensor An open in the wire Faulty control unit DPMS MEM Switch Driving position memory switch MEMO button pushed: ON Switch released: OFF Driver's MPCS unit/A31 (ORN) Driving position memory switch MEMO button pushed: A31 (about 1 V or less) MEMO button released: A31 (5 V or more) Faulty switch An open in the wire A short to ground in the wire Faulty control unit DPMS POS1 Switch Driving position memory switch POS1 button pushed: ON Switch released: OFF Driver's MPCS unit/A29 (GRN) Driving position memory switch POS1 button pushed: A29 (about 1 V or more) POS1 button released: A29 (5 V or more) Faulty switch An open in the wire A short to ground in the wire Faulty control unit DPMS POS2 Switch Driving position memory switch POS2 button pushed: ON Switch released: OFF Driver's MPCS unit/A30 (RED) Driving position memory switch POS2 button pushed: A30 (about 1 V or more) POS2 button released: A30 (5 V or more) Faulty switch An open in the wire A short to ground in the wire Faulty control unit
- Exit the data list, and select function test.
- Do each of the function tests listed in the table shown. 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 occur, do the appropriate test at the control unit and terminal indicated in the table. Voltage drop tests should be done with the ignition switch ON (II) and all the connectors connected. Continuity tests should be done with the ignition switch to LOCK (0) and the 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 will not operate by doing 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. COMPONENT OPERATION CHART Function Test Component and Operation Control Unit/Terminal Number/Test (If applicable) Possible cause if desired result is not obtained Power Seat: Slide Motor-Full Forward Seat slides forward Power seat control unit/B8 (BLU), A9 (BLK), B7 (WHT), B17 (YEL) Disconnect power seat control unit connectors A and B. Connect B8 to B17 and B7 to A9; driver's seat should slide forward. Faulty motor An open in the wire A short to ground in the wire Power Seat: Slide Motor-Full Backward Seat slides backward Power seat control unit/B8 (BLU), A9 (BLK), B7 (WHT), B17 (YEL) Disconnect power seat control unit connectors A and B. Connect B8 to B7 and B17 to A9; driver's seat should slide backward. Faulty motor An open in the wire A short to ground in the wire Power Seat: Front UP-DOWN Motor-Full Up Front of seat moves up Power seat control unit/B8 (BLU), A9 (BLK), B6 (BRN/WHT), B16(ORN) Disconnect power seat control unit connectors A and B. Connect B8 to B16 and B6 to A9; front of driver's seat should move up. Faulty motor An open in the wire A short to ground in the wire Power Seat: Front UP-DOWN Motor-Full Down Front of seat moves down Power seat control unit/B8 (BLU), A9 (BLK), B6 (BRN/ WHT), B16(ORN) Disconnect power seat control unit connectors A and B. Connect B8 to B6 and B16 to A9; front of driver's seat should move down. Faulty motor An open in the wire A short to ground in the wire Power Seat: Rear Up-Down Motor-Full Up Rear of seat moves up Power seat control unit/B1 (RED), A9 (BLK), B2 (GRN), B10(BLU/GRN) Disconnect power seat control unit connectors A and B. Connect B1 to B2 and B10 to A9; rear of driver's seat should move up. Faulty motor An open in the wire A short to ground in the wire Power Seat: Rear Up-Down Motor-Full Down Rear of seat moves down Power seat control unit/B1 (RED), A9 (BLK), B2 (GRN), B10(BLU/GRN) Disconnect power seat control unit connectors A and B. Connect B1 to B10 and B2 to A9; rear of driver's seat should move down. Faulty motor An open in the wire A short to ground in the wire Power Seat: Recline Motor-Full Forward Seat back moves forward Power seat control unit/B1 (RED), A9 (BLK), B9 (RED), B11 (GRY) Disconnect power seat control unit connectors A and B. Connect B1 to B11 and B9 to A9; driver's seat back should move forward. Faulty motor An open in the wire A short to ground in the wire Power Seat: Recline Motor-Full Backward Seat back moves backward Power seat control unit/B1 (RED), A9 (BLK), B9 (RED), B11 (GRY) Disconnect power seat control unit connectors A and B. Connect B1 to B9 and B11 to A9; driver's seat back should move backward. Faulty motor An open in the wire A short to ground in the wire Column Tilt Power tilt/telescopic steering tilts up Power tilt/telescopic steering control unit/B1 (BLK), B3 (WHT), B7 (ORN), B8 (LT BLU) Disconnect tilt/telescopic steering control unit connectors A and B. Connect B3 to B8 and B1 to B7; steering tilts up. Faulty motor An open in the wire A short to ground in the wire Column Tilt Power tilt/telescopic steering tilts down Power tilt/telescopic steering control unit/B1 (BLK), B3 (WHT), B7 (ORN), B8 (LT BLU) Disconnect tilt/telescopic steering control unit connectors A and B. Connect B3 to B8 and B1 to B7; steering tilts down. Faulty motor An open in the wire A short to ground in the wire Column Telescopic Power tilt/telescopic steering telescopic pull Power tilt/telescopic steering control unit/B1 (BLK), B3 (WHT), B6 (PNK), B4 (LT GRN) Disconnect tilt/telescopic steering control unit connectors A and B. Connect B3 to B7 and B1 to B8; steering telescopic pull. Faulty motor An open in the wire A short to ground in the wire Column Telescopic Power tilt/telescopic steering telescopic push Power tilt/telescopic steering control unit/B1 (BLK), B3 (WHT), B6 (PNK), B4 (LT GRN) Disconnect tilt/telescopic steering control unit connectors A and B. Connect B3 to B6 and B1 to B4; steering telescopic push. Faulty motor An open in the wire A short to ground in the wire