Tomber l'échappement et le réservoir? 

Je ne connais pas particulièrement le CR-V 1 ... mais sur le HR-V et les autres générations de CR-V, il y a bien une trappe sous la banquette arrière qui permet d'accéder à la jauge d'essence !

Ceci dit, si la jauge fonctionne correctement mais que le voyant ne s'allume pas, ce ne serait pas simplement le voyant au tableau de bord qui est grillé?

1   PFKL2138447   PUMP UNIT, FUEL
1   PFKL347654   PUMP UNIT, FUEL
3   PFKL362069   TANK COMP., FUEL
4   PFKL365989   PROTECTOR, FUEL TANK
5   PFKL367850   BAND ASSY., R. FUEL TANK MOUNTING
6   PFKL368003   BAND ASSY., L. FUEL TANK MOUNTING
7   PFKL368192   BOLT-WASHER, 10X35
8   PFKL368199   BOLT, FUEL TANK MOUNTING
9   PFKL370265   O-RING, 104MM
10   PFKL371582   TUBE, FILLER NECK
11   PFKL371620   CLIP, FILLER TUBE
12   PFKL371695   TUBE ASSY., BREATHER
13   PFKL372068   PIPE COMP., FUEL FILLER
15   PFKL372254   COVER, FUEL FILLER PIPE
17   PFKL373384   HOSE, FUEL TANK RETURN
18   PFKL373545   TUBE COMP., FUEL JOINT
19   PFKL373820   RETAINER (WHITE) (SANOH)
21   PFKL374497   PIPE, FUEL TANK VENT JOINT
22   PFKL628246   CLIP, CLUTCH PIPE
23   PFKL802215   PIPE, RR. FRAME
24   PFKL802570   CAP ASSY., FLOOR MAINTENANCE HOLE
25   PFKL802584   CAP ASSY., FLOOR MAINTENANCE HOLE
26   PFKL802600   CAP, FLOOR MAINTENANCE HOLE
27   PFKL802680   PIPE, MIDDLE CROSSMEMBER
28   PFKL989106   NUT, FLANGE, 6MM
29   PFKL998211   CLIP, SIDE APRON MOLDING
30   PFKL1000121   CLIP, AIR BLEED TUBE
31   PFKL1001206   PLUG, HOLE, 38MM
32   PFKL1011300   CLAMP, FUEL HOSE (D10.5)
33   PFKL1014078   GROMMET, SCREW, 5MM (BLACK)
35   PFKL1016785   BOLT, DRAIN PLUG, 12MM
36   PFKL1017303   BOLT-WASHER, 6X16
37   PFKL986346   BOLT, EARTH, 6X16
38   PFKL1017544   BOLT-WASHER, 10X20
39   PFKL1020227   SCREW, TAPPING, 5X12
40   PFKL1020683   SCREW, TAPPING, 4X8
41   PFKL1020964   NUT, HEX., 8MM
42   PFKL1021328   NUT, FLANGE, 6MM
43   PFKL1021416   WASHER, PLAIN, 8MM
45   PFKL1021514   WASHER, DRAIN PLUG, 12MM
49   PFKL1023391   CLIP, TUBE (B10)
50   PFKL359063   TUBE, FUEL VENT
51   PFKL359551   VALVE, TWO WAY (TEC)
52   PFKL359618   COVER, TWO WAY VALVE
53   PFKL371623   CLIP, FILLER TUBE
54   PFKL372175   PACKING, FUEL FILLER
55   PFKL372380   CAP COMP., FUEL FILLER
56   PFKL373274   TUBE B, FUEL VENT
57   PFKL374381   BRACKET, TWO WAY VALVE
58   PFKL1013859   CLIP, FUEL FILLER CAP
59   PFKL1022899   TUBE, FUEL, 5.5X160 (95001-55001-60M)

1   PFKL317378   STRAINER SET, FUEL (TOYO ROKI)
2   PFKL340053   DAMPER ASSY., PULSATION
3   PFKL340484   GASKET, SILENCER
4   PFKL340927   HOSE COMP., FUEL FEED
5   PFKL341955   COVER, FR. FUEL PIPE
6   PFKL341964   COVER, RR. FUEL PIPE
7   PFKL342032   STAY, FUEL STRAINER
8   PFKL342100   BAND, FUEL STRAINER
9   PFKL342125   RUBBER, MOUNTING
10   PFKL342128   RUBBER, MOUNTING
11   PFKL342133   COLLAR, DISTANCE
12   PFKL342134   COLLAR, DISTANCE
14   PFKL358610   JOINT, CANISTER
15      PIPE COMP., FUEL FEED
16      PIPE COMP., FUEL VENT
17   PFKL374204   HOSE, PRESSURE REGULATOR RETURN
18      PIPE COMP., FUEL RETURN
19   PFKL374847   CAP, DRAIN TUBE
23   PFKL375093   STAY A, FUEL PIPE
24   PFKL375128   STAY B, FUEL PIPE
25   PFKL375142   STAY C, FUEL PIPE
26   PFKL375148   STAY C, FUEL PIPE
27   PFKL375166   STAY D, FUEL PIPE
28   PFKL375172   STAY D, FUEL PIPE
29      STAY G, FUEL PIPE
30   PFKL976454   BOLT, SEALING, 12MM
31   PFKL982187   BOLT-WASHER, 6X24
32   PFKL988803   NUT, SPECIAL, 6MM
33   PFKL990828   NUT, PAINT CUTTING, 6MM
34   PFKL992210   WASHER, SEALING, 12MM
35   PFKL1011300   CLAMP, FUEL HOSE (D10.5)
36   PFKL1013736   CLAMP, FUEL JOINT PIPE
37   PFKL1013788   CLIP, DRAIN TUBE (NATURAL)
38   PFKL1013897   CLAMP A, FUEL PIPE
39   PFKL1013899   CLAMP A, FUEL PIPE
42   PFKL1013995   CLAMP D, FUEL PIPE (NIFCO)
42   PFKL1013995   CLAMP D, FUEL PIPE (SANOU)
43   PFKL1014041   CLAMP E, FUEL PIPE
44   PFKL1014046   CLAMP A, FUEL PIPE
45   PFKL1017303   BOLT-WASHER, 6X16
46   PFKL1017473   BOLT-WASHER, 6X16
47   PFKL1022943   TUBE, FUEL, 5.5X225 (95001-55001-60M)
49   PFKL1023391   CLIP, TUBE (B10)
56   PFKL358497   CANISTER ASSY.
57      TUBE, SUB DRAIN
58      TUBE, CANISTER DRAIN
59   PFKL359658   TUBE, CANISTER
60   PFKL374835   JOINT, DRAIN TUBE