LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Honda >> 2021 >> Ridgeline RTL-E >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Engine Electrical - Service Specifications >> Standards and Service Limits >> Engine Electrical
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Engine Electrical

Item  Measurement  Qualification  Standard or New  Service Limit 
Ignition coil Firing order   1-4-2-5-3-6
Spark plug Gap   1.0-1.1 mm (0.039-0.043 in) -
Ignition timing At idle Check the red mark In N or P 5 +/-2 deg. BTDC
Drive belt Tension   Auto-tensioner
Alternator Brush length   10.5 mm (0.413 in) 1.5 mm (0.059 in)
Commutator mica depth   0.5-0.9 mm (0.020-0.035 in) 0.20 mm (0.0079 in)
Commutator runout   0.02 mm (0.0008 in) max. 0.05 mm (0.0020 in)
Commutator O.D.   28.9-29.0 mm (1.138-1.142 in) 28.0 mm (1.102 in)
Brush length   15.0-16.0 mm (0.591-0.630 in) 9.0 mm (0.354 in)
Brush spring tension   22.3-27.3 N (2.27-2.78 kgf, 5.01-6.14 lbf) -