Power Relay Test
Special tools Required
Relay puller 07AAC-000A1A0
Use this chart to identify the type of relay, then do the test listed for it.
| Relay | Test |
|---|---|
| ACC cut relay | Normally-open type |
| A/C compressor clutch relay | |
| A/C condenser fan relay | |
| Accessory power socket relay | |
| Brake light relay | |
| Cargo area accessory power socket relay | |
| Front blower motor relay | |
| Front seat heater relay | |
| Fog light relay | |
| Headlight low beam relay | |
| Headlight washer relay | |
| IG2 cut relay | |
| Interior light relay | |
| PGM-FI main relay 2 | |
| Power window relay | |
| Radiator fan relay | |
| Rear blower motor relay | |
| Rear window defogger relay | |
| SH-AWD relay | |
| Starter cut relay 1, 2 | |
| Fan control relay | Five-terminal type |
| Second row seat heater relay |
POWER RELAY TEST REFERENCE
Note. The following relays are part of the relay control module: PGM-FI main relay 1, ignition coil relay, PGM-FI subrelay and ETCS relay. To test these relays, go to RELAY CONTROL MODULE TEST (see ).
Carefully remove the relay from the under - dash fuse/relay box using the relay puller. Do not use pliers. Pliers will damage the relay.
Normally-open type
Check for continuity between the terminals.
Scheme 32
- There should be continuity between the No. 1 and No. 2 terminals when battery positive terminal is connected to the No. 4 terminal, and battery negative terminal is connected to the No. 3 terminal.
- There should be no continuity between the No. 1 and No. 2 terminals when power is disconnected.
Five-terminal type
Check for continuity between the terminals.
Scheme 33
- There should be continuity between the No. 1 and No. 2 terminals when battery positive terminal is connected to the No. 5 terminal, and battery negative terminal is connected to the No. 3 terminal.
- There should be continuity between the No. 1 and No. 4 terminals when power is disconnected.
Relay Control Module Test
The relay control module is part of the under-hood fuse/ relay box, and it contains these relays
- PGM-FI main relay 1
- Ignition coil relay
- PGM-FI subrelay
- ETCS relay
If any of these relays fail the test, replace the under-hood fuse/relay box.
Scheme 34
- Do the battery terminal disconnection procedure,(see «BATTERY TERMINAL DISCONNECTION AND RECONNECTION»(/acura/mdx/ii-2006-2010/remont/body-electrical/#battery) then disconnect under-hood fuse/relay box connectors C (2P), E (14P), and H (9P).
- Connect battery power to the C2 terminal. PGM-FI main relay 1: Connect the E5 terminal to body ground. There should be battery voltage between the H1 terminal and body ground. Disconnect the E5 terminal from the body ground. There should be no voltage between the HI terminal and the body ground. Ignition coil relay: Connect the E5 terminal to body ground. There should be battery voltage between the H6 terminal and body ground. Disconnect the E5 terminal from the body ground. There should be no voltage between the H6 terminal and the body ground. PGM-FI subrelay: Connect the E5 and E13 terminals to body ground. There should be battery voltage between the H9 terminal and body ground. Disconnect the E5 terminal from the body ground. There should be no voltage between the H9 terminal and the body ground. ETCS relay: Connect the E5 and E14 terminals to body ground. There should be battery voltage between the H7 terminal and body ground. Disconnect the E5 terminal from the body ground. There should be no voltage between the H7 terminal and the body ground.