Caravan L4-2.4L VIN B (2003)
Accessory Delay Relay: Testing and Inspection
Fig.1 Accessory Relay
ACCESSORY RELAY
The accessory relay is located in the Integrated Power Module (IPM), in the engine compartment. For complete circuit diagrams, refer to Wiring
Diagrams.
1. Remove the accessory relay from the IPM. Refer to Accessory Relay in the REMOVAL and INSTALLATION section of this group for the
procedure.
2. A relay in the de-energized position should have continuity between terminals 87A and 30, and no continuity between terminals 87 and 30. If OK,
go to Step 3. If not OK, replace the faulty relay.
3. Resistance between terminals 85 and 86 (electromagnet) should be 75 ± 5 ohms. If OK, go to Step 4. If not OK, replace the faulty relay.
4. Connect a battery to terminals 85 and 86. There should now be continuity between terminals 30 and 87, and no continuity between terminals 87A
and 30. If OK, perform the Relay Circuit Test that follows. If not OK, replace the faulty relay
RELAY CIRCUIT TEST
1. The relay common feed terminal cavity (30) of the IPM is connected to battery voltage and should be hot at all times. Check for battery voltage at
the fused B(+) circuit cavity in the IPM receptacle for the accessory relay. If OK, go to Step 2. If not OK, repair the fused B(+) circuit to the IPM
fuse as required.
2. The relay normally closed terminal (87A) is connected to terminal 30 in the de-energized position, but is not used for this application. Go to Step
3.
3. The relay normally open terminal (87) is connected to the common feed terminal (30) in the energized position. This terminal supplies battery
voltage to the fused B(+) fuse in the IPM that feeds the accessories when the relay is energized by the ignition switch. There should be continuity
between the IPM cavity for relay terminal 87 and the fused B(+) fuse in the IPM at all times. If OK, go to Step 4. If not OK, repair the open fused
B(+) circuit to the IPM fuse as required.
4. The coil ground terminal (85) is connected to the electromagnet in the relay. It receives battery feed to energize the accessory relay when the
ignition switch is in the Accessory or ON positions. Turn the ignition switch to the ON position. Check for battery voltage at the fused ignition
switch output (acc/run) circuit cavity for relay terminal 85 in the IPM receptacle for the accessory relay. If OK, go to Step 5. If not OK, repair the
open fused ignition switch output (acc/run) circuit to the ignition switch as required.
5. The coil battery terminal (86) is connected to the electromagnet in the relay The IPM cavity for this terminal should have continuity to ground at
all times. If not OK, repair the open ground circuit to ground as required.
