55901D
1.INSPECT NO. 1 HEATER CONTROL SUB-ASSEMBLY
Check the resistance.
Measure the resistance according to the value(s) in the table below.
| *a | Component without harness connected
(No. 1 Heater Control Sub-assembly) |
*b | Window Defogger Switch Indicator |
| *c | Defogger Sensing ON Position | *d | Recirculation/Fresh Bilayer Sensing Switch ON Position (Counterclockwise) |
| *e | Recirculation/Fresh Bilayer Sensing Switch OFF Position (Clockwise) | *f | Knob Dial Stopper |
| *g | 258.26° to 269.26° | *h | 87.24° to 97.24° |
| *i | 22.74° to 33.74° | - | - |
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I146-2 (ERDF) - I146-9 (DFLG) | Defogger sensing on position | Below 1 Ω |
| I146-2 (ERDF) - I146-10 (FRDL) | Recirculation/Fresh bilayer sensing switch ON position (Counterclockwise) | Below 1 Ω |
| I146-2 (ERDF) - I146-10 (FRDL) | Recirculation/Fresh bilayer sensing switch OFF position (Clockwise) | Below 1 Ω |
If the result is not as specified, replace the No. 1 heater control sub-assembly.
Check the illumination.
Apply auxiliary battery voltage to the No. 1 heater control sub-assembly and check the illumination.
| Measurement Condition | Specified Condition |
|---|---|
| I146-4 (ILL+) - Auxiliary battery positive (+)
I146-1 (ILL-) - Auxiliary battery negative (-) |
No. 1 heater control sub-assembly illuminates |
If the result is not as specified, replace the No. 1 heater control sub-assembly.
Check the indicator.
Apply auxiliary battery voltage to the connector terminal and check the indicator.
| Measurement Condition | Condition | Specified Condition |
|---|---|---|
| I146-5 (IG+), I146-6 (RDEF) - Auxiliary battery positive (+)
I146-2 (ERDF) - Auxiliary battery negative (-) |
Window defogger switch ON position | Indicator illuminates |
| I146-5 (IG+), I146-6 (RDEF) - Auxiliary battery positive (+)
I146-2 (ERDF) - Auxiliary battery negative (-) |
Window defogger switch OFF position | Indicator does not illuminate |
If the result is not as specified, replace the No. 1 heater control sub-assembly.
55902E
2.INSPECT NO. 2 HEATER CONTROL SUB-ASSEMBLY
Check the resistance.
| *a | Component without harness connected
(No. 2 Heater Control Sub-assembly) |
| *b | Blower Switch: OFF |
| *c | Blower Switch: LO |
| *d | Blower Switch: M1 |
| *e | Blower Switch: M2 |
| *f | Blower Switch: HI |
| *g | Recirculation/Fresh Switch Indicator |
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I145-5 (LO) - I145-1 (E) | Blower switch: OFF | 10 kΩ or higher |
| I145-8 (M1) - I145-1 (E) | Blower switch: OFF | 10 kΩ or higher |
| I145-4 (M2) - I145-1 (E) | Blower switch: OFF | 10 kΩ or higher |
| I145-7 (HI) - I145-1 (E) | Blower switch: OFF | 10 kΩ or higher |
| I145-5 (LO) - I145-1 (E) | Blower switch: LO | Below 1 Ω |
| I145-5 (LO) - I145-1 (E) | Blower switch: LO - M1 | Below 1 Ω |
| I145-8 (M1) - I145-1 (E) | Blower switch: LO - M1 | Below 1 Ω |
| I145-5 (LO) - I145-1 (E) | Blower switch: M1 | Below 1 Ω |
| I145-8 (M1) - I145-1 (E) | Blower switch: M1 | Below 1 Ω |
| I145-5 (LO) - I145-1 (E) | Blower switch: M1 - M2 | Below 1 Ω |
| I145-8 (M1) - I145-1 (E) | Blower switch: M1 - M2 | Below 1 Ω |
| I145-4 (M2) - I145-1 (E) | Blower switch: M1 - M2 | Below 1 Ω |
| I145-5 (LO) - I145-1 (E) | Blower switch: M2 | Below 1 Ω |
| I145-4 (M2) - I145-1 (E) | Blower switch: M2 | Below 1 Ω |
| I145-5 (LO) - I145-1 (E) | Blower switch: M2 - HI | Below 1 Ω |
| I145-4 (M2) - I145-1 (E) | Blower switch: M2 - HI | Below 1 Ω |
| I145-7 (HI) - I145-1 (E) | Blower switch: M2 - HI | Below 1 Ω |
| I145-5 (LO) - I145-1 (E) | Blower switch: HI | Below 1 Ω |
| I145-7 (HI) - I145-1 (E) | Blower switch: HI | Below 1 Ω |
| I149-5 (IG+) - I149-3 (F/R) | Recirculation/Fresh switch: ON | Below 1 Ω |
| I149-5 (IG+) - I149-3 (F/R) | Recirculation/Fresh switch: OFF | 10 kΩ or higher |
If the result is not as specified, replace the No. 2 heater control sub-assembly.
Check the illumination.
Apply auxiliary battery voltage to the No. 2 heater control sub-assembly and check the illumination.
| Measurement Condition | Specified Condition |
|---|---|
| I149-4 (ILL+) - Auxiliary battery positive (+)
I149-1 (ILL-) - Auxiliary battery negative (-) |
No. 2 Heater control sub-assembly illuminates |
If the result is not as specified, replace the No. 2 heater control sub-assembly.
Check the indicator.
Apply auxiliary battery voltage to the connector terminal and check the indicator.
| Measurement Condition | Condition | Specified Condition |
|---|---|---|
| I149-5 (IG+) - Auxiliary battery positive (+)
I149-2 (FRID) - Auxiliary battery negative (-) |
Recirculation/Fresh switch ON position | Indicator illuminates |
| I149-5 (IG+) - Auxiliary battery positive (+)
I149-2 (FRID) - Auxiliary battery negative (-) |
Recirculation/Fresh switch OFF position | Indicator does not illuminate |
If the result is not as specified, replace the No. 1 heater control sub-assembly.
55903A
3.INSPECT NO. 3 HEATER CONTROL SUB-ASSEMBLY
Check the resistance.
| *a | Component without harness connected
(No. 3 Heater Control Sub-assembly) |
| *b | A/C Switch Indicator |
| *c | MAX HOT |
| *d | MAX COLD |
Measure the resistance according to the value(s) in the table below.
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| I147-1 (IG+) - I147-2 (MAXH) | Except MAX HOT | 10 kΩ or higher |
| I147-1 (IG+) - I147-2 (MAXH) | MAX HOT | Below 1 Ω |
| I147-1 (IG+) - I147-7 (MAXC) | Except MAX COLD | 10 kΩ or higher |
| I147-1 (IG+) - I147-7 (MAXC) | MAX COLD | Below 1 Ω |
| I147-1 (IG+) - I147-8 (A/C) | A/C switch ON position | Below 1 Ω |
| I147-1 (IG+) - I147-8 (A/C) | A/C switch OFF position | 10 kΩ or higher |
If the result is not as specified, replace the No. 3 heater control sub-assembly.
Check the illumination.
Apply auxiliary battery voltage to the No. 3 heater control sub-assembly and check the illumination.
| Measurement Condition | Specified Condition |
|---|---|
| I147-6 (ILL+) - Auxiliary battery positive (+)
I147-10 (ILL-) - Auxiliary battery negative (-) |
No. 3 heater control sub-assembly illuminates |
If the result is not as specified, replace the No. 3 heater control sub-assembly.
Check the indicator.
Apply auxiliary battery voltage to the connector terminal and check the indicator.
| Measurement Condition | Condition | Specified Condition |
|---|---|---|
| I147-1 (IG+) - Auxiliary battery positive (+)
I147-4 (AIND) - Auxiliary battery negative (-) |
A/C switch ON position | Indicator illuminates |
| I147-1 (IG+) - Auxiliary battery positive (+)
I147-4 (AIND) - Auxiliary battery negative (-) |
A/C switch OFF position | Indicator does not illuminate |
If the result is not as specified, replace the No. 3 heater control sub-assembly.