Honda HR-V: Description
CHARGING SYSTEM DESCRIPTION - OVERVIEW
Overview
The PCM gathers vehicle operating system data and determines the required charging rate. Based on that data, the PCM commands the alternator to provide a specific charging rate (voltage) between 12.5 and 14.5 volts, using 1/10th volt steps. In some operating conditions, the alternator may bypass PCM control and use a default value.
*Depending on the vehicle condition, the variable control is not activated.
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When the alternator is at fault, one or more of the following DTC is stored. Refer to the corresponding troubleshooting.
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Testing
ALTERNATOR PERFORMANCE TEST
Special Tools Required
Honda 12 Volt Battery Diagnostic Station (GR8): Model Number MTRGR81100P*
*: Available through the Honda Tool and Equipment Program 888-424-6857
1. P
Symptom Troubleshooting
CHARGING SYSTEM SYMPTOM TROUBLESHOOTING INDEX
CHARGING SYSTEM INDICATOR STAYS ON
Diagnostic procedure
1. Gauges Self-Diagnostic Function
CIRCUIT DIAGRAM
CHARGING SYSTEM CIRCUIT DIAGRAM
Without Keyles
Overhaul
ALTERNATOR OVERHAUL
Special Tools Required
Bearing Driver
Attachment, 42 x
47 mm
07746-0010300
Driver Handle, 15
x 135L
07749-0010000
Exploded View
1. Alternator Exploded View
Fig. 1: Alternator Ex
SEE MORE:
Radiator and A/C Condenser Fan Low Speed Circuit Troubleshooting
NOTE:
Do not use this troubleshooting procedure if the A/C compressor is
inoperative. Refer to the symptom troubleshooting index - Refer to: Heating
and A/C Systems Symptom Troubleshooting Index (Heating/Air Conditioning), or
Climate Control System Symptom Troubleshooting Index (Climate Cont
Rear Differential Pressure Test (AWD)
Test
NOTE: Before doing the pressure test, check the following conditions.
Check that the AWD system indicator does not come on. If it does, check
for AWD with intelligent control system DTCs.
Check the rear differential fluid level.
Check for rear differential fluid leaks at the rear different
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