Power Relay Test
Special Tools Required
Relay Puller 07AAC-000A2A1 or 07AAC-000A1A0
Use this chart to identify the type of relay, then do the test listed for it.
| Relay | Test |
|---|---|
| Accessory relay (with keyless access system) | Normally-open four-terminal type |
| A/C condenser fan relay (1) | |
| A/C compressor clutch relay (1) | |
| Blower motor relay (1) | |
| Console accessory power socket | |
| Driver's seat heater relay (high) (1) | |
| Electronic throttle control system (ETCS) control relay (1) | |
| Front accessory power socket relay* (with keyless access system) | |
| Front accessory power socket relay (without keyless access system) | |
| Headlight washer motor relay* (With headlight washer) | |
| Ignition coil relay (1) | |
| Front passenger's seat heater relay (high) (1) | |
| PGM-FI main relay 1 (1) | |
| PGM-FI main relay 2 (1) | |
| PGM-FI subrelay (1) | |
| Rear window defogger relay (1) | |
| Starter cut relay 1 | |
| Starter cut relay 2 (1) | |
| Seat ventilation relay* (with seat ventilation) | |
| SH-AWD relay* (with SH-AWD) | |
| + B cut relay (M/T) | |
| ACC cut relay* (without keyless access system) | Five-terminal type |
| IG2 cut relay* (without keyless access system) | |
| Driver's seat heater relay (low) (1) | |
| Front passenger's seat heater relay (low) (1) | |
| (1) Carefully remove the relay from fuse/relay box using the relay puller. Do not use pliers. Pliers will damage the relay. | |
| (1) | Carefully remove the relay from fuse/relay box using the relay puller. Do not use pliers. Pliers will damage the relay. |
Scheme 61
Normally-Open Four-Terminal Type
Check for continuity between the terminals
- There should be continuity between terminals No. 1 and No. 2 when battery power is connected to terminal No. 4, and body ground is connected to terminal No. 3.
- There should be no continuity between terminals No. 1 and No. 2 when power is disconnected.
Scheme 62
Scheme 63
Scheme 64
Five-Terminal Type
Check for continuity between the terminals
- There should be continuity between terminals No. 1 and No. 2 when battery power is connected to terminal No. 5, and body ground is connected to terminal No. 3.
- There should be continuity between terminals No. 1 and No. 4 when power is disconnected.
Scheme 65
Scheme 66
Relay Circuit Board Test
The relay circuit board is part of the under-hood fuse/relay box, and it contains these relays
- Radiator fan relay
- Fan control relay
- Horn relay
- Windshield wiper motor relay
- Windshield wiper intermittent relay
- Windshield wiper high/low relay
Scheme 67
Scheme 68
Scheme 69
Scheme 70
Scheme 71
- Do the battery terminal disconnection procedure (see «BATTERY TERMINAL DISCONNECTION AND RECONNECTION»(/acura/tl/iv-2011-2014/remont/body-electrical/#battery) ).
- Disconnect under-hood fuse/relay box connectors B (14P) and C(5P).
- Test each relay circuit as shown: Radiator fan relay: There should be continuity between terminals C1 and C3 when battery power is connected to terminal B9, and battery ground is connected to terminal B10. There should be no continuity between terminals C1 and C3 when power is disconnected. Fan control relay: There should be continuity between terminals C2 and C5 when battery power is connected to terminal B1, (B2 or B8), and battery ground is connected to terminal B10. There should be continuity between terminals C1 and C5 when power is disconnected. Horn relay: There should be battery voltage at terminal B11 when battery power is connected to terminal B3, and battery ground is connected to terminal B7. There should be no continuity between terminals B3 and B11 when power is disconnected. Windshield wiper motor relay: There should be continuity between terminals C4 and B13, and terminals C4 and B14 when battery power is connected to terminal B12, and battery ground is connected to terminal B4. There should be no continuity between terminals C4 and B13, and terminals C4 and B14 when power is disconnected. Windshield wiper intermittent relay: There should be battery voltage at terminal B6 when battery power is connected to terminals C4 and B12, and battery ground is connected to terminals B4 and B13. There should be no voltage at terminal B6 when terminal B13 is disconnected. Windshield wiper high/low relay: There should be battery voltage at terminal B5 when battery power is connected to terminals C4 and B12, and battery ground is connected to terminals B4, B13, and B14. There should be no voltage at terminal B5 when terminal B14 is disconnected. Radiator fan relay. Fan control relay Horn relay Windshield wiper motor relay. Windshield wiper intermittent relay. Windshield wiper high/low relay
- If any of these relay circuit fails the test, replace the relay circuit board.
- Reinstall all removed parts.
- Do the battery terminal reconnection procedure (see «BATTERY TERMINAL DISCONNECTION AND RECONNECTION»(/acura/tl/iv-2011-2014/remont/body-electrical/#battery) ).